Effect of manganese doping on conduction in olivine $ LiFePO_{4} $
Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ L...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Gupta, Reema [verfasserIn] Saha, Shibu [verfasserIn] Tomar, Monika [verfasserIn] Sachdev, V. K. [verfasserIn] Gupta, Vinay [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of materials science - Dordrecht [u.a.] : Springer Science + Business Media B.V, 1990, 28(2016), 7 vom: 19. Dez., Seite 5192-5199 |
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| Übergeordnetes Werk: |
volume:28 ; year:2016 ; number:7 ; day:19 ; month:12 ; pages:5192-5199 |
| Links: |
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| DOI / URN: |
10.1007/s10854-016-6175-9 |
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| Katalog-ID: |
SPR014053489 |
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| 520 | |a Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. | ||
| 650 | 4 | |a Discharge Capacity |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Cathode Material |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a LiFePO4 |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Charge Transfer Process |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Lithium Iron Phosphate |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Saha, Shibu |e verfasserin |4 aut | |
| 700 | 1 | |a Tomar, Monika |e verfasserin |4 aut | |
| 700 | 1 | |a Sachdev, V. K. |e verfasserin |4 aut | |
| 700 | 1 | |a Gupta, Vinay |e verfasserin |4 aut | |
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10.1007/s10854-016-6175-9 doi (DE-627)SPR014053489 (SPR)s10854-016-6175-9-e DE-627 ger DE-627 rakwb eng 600 670 620 ASE 33.61 bkl 51.10 bkl 51.40 bkl 53.09 bkl Gupta, Reema verfasserin aut Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. Discharge Capacity (dpeaa)DE-He213 Cathode Material (dpeaa)DE-He213 LiFePO4 (dpeaa)DE-He213 Charge Transfer Process (dpeaa)DE-He213 Lithium Iron Phosphate (dpeaa)DE-He213 Saha, Shibu verfasserin aut Tomar, Monika verfasserin aut Sachdev, V. K. verfasserin aut Gupta, Vinay verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1990 28(2016), 7 vom: 19. Dez., Seite 5192-5199 (DE-627)317827154 (DE-600)2016994-2 1573-482X nnns volume:28 year:2016 number:7 day:19 month:12 pages:5192-5199 https://dx.doi.org/10.1007/s10854-016-6175-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.61 ASE 51.10 ASE 51.40 ASE 53.09 ASE AR 28 2016 7 19 12 5192-5199 |
| spelling |
10.1007/s10854-016-6175-9 doi (DE-627)SPR014053489 (SPR)s10854-016-6175-9-e DE-627 ger DE-627 rakwb eng 600 670 620 ASE 33.61 bkl 51.10 bkl 51.40 bkl 53.09 bkl Gupta, Reema verfasserin aut Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. Discharge Capacity (dpeaa)DE-He213 Cathode Material (dpeaa)DE-He213 LiFePO4 (dpeaa)DE-He213 Charge Transfer Process (dpeaa)DE-He213 Lithium Iron Phosphate (dpeaa)DE-He213 Saha, Shibu verfasserin aut Tomar, Monika verfasserin aut Sachdev, V. K. verfasserin aut Gupta, Vinay verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1990 28(2016), 7 vom: 19. Dez., Seite 5192-5199 (DE-627)317827154 (DE-600)2016994-2 1573-482X nnns volume:28 year:2016 number:7 day:19 month:12 pages:5192-5199 https://dx.doi.org/10.1007/s10854-016-6175-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.61 ASE 51.10 ASE 51.40 ASE 53.09 ASE AR 28 2016 7 19 12 5192-5199 |
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10.1007/s10854-016-6175-9 doi (DE-627)SPR014053489 (SPR)s10854-016-6175-9-e DE-627 ger DE-627 rakwb eng 600 670 620 ASE 33.61 bkl 51.10 bkl 51.40 bkl 53.09 bkl Gupta, Reema verfasserin aut Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. Discharge Capacity (dpeaa)DE-He213 Cathode Material (dpeaa)DE-He213 LiFePO4 (dpeaa)DE-He213 Charge Transfer Process (dpeaa)DE-He213 Lithium Iron Phosphate (dpeaa)DE-He213 Saha, Shibu verfasserin aut Tomar, Monika verfasserin aut Sachdev, V. K. verfasserin aut Gupta, Vinay verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1990 28(2016), 7 vom: 19. Dez., Seite 5192-5199 (DE-627)317827154 (DE-600)2016994-2 1573-482X nnns volume:28 year:2016 number:7 day:19 month:12 pages:5192-5199 https://dx.doi.org/10.1007/s10854-016-6175-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.61 ASE 51.10 ASE 51.40 ASE 53.09 ASE AR 28 2016 7 19 12 5192-5199 |
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10.1007/s10854-016-6175-9 doi (DE-627)SPR014053489 (SPR)s10854-016-6175-9-e DE-627 ger DE-627 rakwb eng 600 670 620 ASE 33.61 bkl 51.10 bkl 51.40 bkl 53.09 bkl Gupta, Reema verfasserin aut Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. Discharge Capacity (dpeaa)DE-He213 Cathode Material (dpeaa)DE-He213 LiFePO4 (dpeaa)DE-He213 Charge Transfer Process (dpeaa)DE-He213 Lithium Iron Phosphate (dpeaa)DE-He213 Saha, Shibu verfasserin aut Tomar, Monika verfasserin aut Sachdev, V. K. verfasserin aut Gupta, Vinay verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1990 28(2016), 7 vom: 19. Dez., Seite 5192-5199 (DE-627)317827154 (DE-600)2016994-2 1573-482X nnns volume:28 year:2016 number:7 day:19 month:12 pages:5192-5199 https://dx.doi.org/10.1007/s10854-016-6175-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.61 ASE 51.10 ASE 51.40 ASE 53.09 ASE AR 28 2016 7 19 12 5192-5199 |
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10.1007/s10854-016-6175-9 doi (DE-627)SPR014053489 (SPR)s10854-016-6175-9-e DE-627 ger DE-627 rakwb eng 600 670 620 ASE 33.61 bkl 51.10 bkl 51.40 bkl 53.09 bkl Gupta, Reema verfasserin aut Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. Discharge Capacity (dpeaa)DE-He213 Cathode Material (dpeaa)DE-He213 LiFePO4 (dpeaa)DE-He213 Charge Transfer Process (dpeaa)DE-He213 Lithium Iron Phosphate (dpeaa)DE-He213 Saha, Shibu verfasserin aut Tomar, Monika verfasserin aut Sachdev, V. K. verfasserin aut Gupta, Vinay verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1990 28(2016), 7 vom: 19. Dez., Seite 5192-5199 (DE-627)317827154 (DE-600)2016994-2 1573-482X nnns volume:28 year:2016 number:7 day:19 month:12 pages:5192-5199 https://dx.doi.org/10.1007/s10854-016-6175-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.61 ASE 51.10 ASE 51.40 ASE 53.09 ASE AR 28 2016 7 19 12 5192-5199 |
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Enthalten in Journal of materials science 28(2016), 7 vom: 19. Dez., Seite 5192-5199 volume:28 year:2016 number:7 day:19 month:12 pages:5192-5199 |
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Discharge Capacity Cathode Material LiFePO4 Charge Transfer Process Lithium Iron Phosphate |
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Gupta, Reema @@aut@@ Saha, Shibu @@aut@@ Tomar, Monika @@aut@@ Sachdev, V. K. @@aut@@ Gupta, Vinay @@aut@@ |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR014053489</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20220111004641.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201006s2016 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s10854-016-6175-9</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR014053489</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s10854-016-6175-9-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">600</subfield><subfield code="a">670</subfield><subfield code="a">620</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">33.61</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">51.10</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">51.40</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">53.09</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Gupta, Reema</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Effect of manganese doping on conduction in olivine $ LiFePO_{4} $</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2016</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Discharge Capacity</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Cathode Material</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">LiFePO4</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Charge Transfer Process</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Lithium Iron Phosphate</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Saha, Shibu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Tomar, Monika</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Sachdev, V. 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Gupta, Reema |
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Gupta, Reema ddc 600 bkl 33.61 bkl 51.10 bkl 51.40 bkl 53.09 misc Discharge Capacity misc Cathode Material misc LiFePO4 misc Charge Transfer Process misc Lithium Iron Phosphate Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ |
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600 670 620 ASE 33.61 bkl 51.10 bkl 51.40 bkl 53.09 bkl Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ Discharge Capacity (dpeaa)DE-He213 Cathode Material (dpeaa)DE-He213 LiFePO4 (dpeaa)DE-He213 Charge Transfer Process (dpeaa)DE-He213 Lithium Iron Phosphate (dpeaa)DE-He213 |
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ddc 600 bkl 33.61 bkl 51.10 bkl 51.40 bkl 53.09 misc Discharge Capacity misc Cathode Material misc LiFePO4 misc Charge Transfer Process misc Lithium Iron Phosphate |
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Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ |
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Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ |
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Gupta, Reema |
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Journal of materials science |
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Journal of materials science |
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Gupta, Reema Saha, Shibu Tomar, Monika Sachdev, V. K. Gupta, Vinay |
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Elektronische Aufsätze |
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Gupta, Reema |
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10.1007/s10854-016-6175-9 |
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600 670 620 |
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verfasserin |
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effect of manganese doping on conduction in olivine $ lifepo_{4} $ |
| title_auth |
Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ |
| abstract |
Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. |
| abstractGer |
Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. |
| abstract_unstemmed |
Abstract Lithium ion batteries play a crucial role in terms of good rechargeability, long cycles and higher shelf life. For the fabrication of such a Li ion battery, properties of cathode material can be engineered keeping anode and electrolyte fixed. In the present work, lithium iron phosphate ($ LiFePO_{4} $) has been utilized as cathode material and the properties of $ LiFePO_{4} $ have been tuned by doping manganese (Mn). $ LiFePO_{4} $ and different concentrations of Mn doped $ LiFePO_{4} $ were prepared by solid state route. X-Ray diffraction and Raman studies were performed to confirm the formation of $ LiFePO_{4} $ and Mn doped $ LiFePO_{4} $ in olivine structure. Cyclic voltammetry studies revealed maximum peak oxidation current (2.96 mA) and largest surface coverage (0.066 nanoMoles/$ cm^{2} $) for the $ LiFePO_{4} $ doped with 15% Mn ($ LiMn_{0.15} %$ Fe_{0.85} %$ PO_{4} $). AC-conductivity study was carried out for different frequencies at room temperature. The conductivity parameters estimated using Almond and West formalism support the cyclic voltammetry results. Ion-hopping rate (ωp) and charge carrier concentration (K) maximize for 15% Mn doping (ωp: 582974.48719 Hz; K: 2.62447 × $ 10^{−6} $) and drop on either increasing (ωp: 167134.73521 Hz; K: 1.25647 × $ 10^{−7} $) or decreasing (ωp: 130726.49084 Hz; K: 2.52435 × $ 10^{−6} $) the Mn doping. The increase till 15% Mn doping has been attributed to the increase in unit cell volume with Mn doping while the sudden decrease at 20% Mn doping is due to dominance of back-hopping mechanism. The results clearly indicate that 15% Mn doped $ LiFePO_{4} $ is the most appropriate for the realization of a cathode for Li-ion battery. |
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Effect of manganese doping on conduction in olivine $ LiFePO_{4} $ |
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| score |
7.4006424 |