Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance
Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated ont...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ghanbarlou, Hosna [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
Fe, Co and Fe–Co nanoparticles |
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| Umfang: |
9 |
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| Übergeordnetes Werk: |
Enthalten in: Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method - Xiao, Hong ELSEVIER, 2013, the international journal on the science and technology of electrochemical energy systems, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:273 ; year:2015 ; day:1 ; month:01 ; pages:981-989 ; extent:9 |
| Links: |
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| DOI / URN: |
10.1016/j.jpowsour.2014.10.001 |
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| 245 | 1 | 0 | |a Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance |
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| 520 | |a Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. | ||
| 520 | |a Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. | ||
| 650 | 7 | |a Fe, Co and Fe–Co nanoparticles |2 Elsevier | |
| 650 | 7 | |a Solvothermal process |2 Elsevier | |
| 650 | 7 | |a Oxygen reduction reaction |2 Elsevier | |
| 650 | 7 | |a Electrochemical characterization |2 Elsevier | |
| 650 | 7 | |a Nitrogen-doped graphene |2 Elsevier | |
| 700 | 1 | |a Rowshanzamir, Soosan |4 oth | |
| 700 | 1 | |a Kazeminasab, Bagher |4 oth | |
| 700 | 1 | |a Parnian, Mohammad Javad |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Xiao, Hong ELSEVIER |t Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method |d 2013 |d the international journal on the science and technology of electrochemical energy systems |g New York, NY [u.a.] |w (DE-627)ELV00098745X |
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10.1016/j.jpowsour.2014.10.001 doi GBV00000000000185A.pica (DE-627)ELV013135562 (ELSEVIER)S0378-7753(14)01609-7 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Ghanbarlou, Hosna verfasserin aut Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Fe, Co and Fe–Co nanoparticles Elsevier Solvothermal process Elsevier Oxygen reduction reaction Elsevier Electrochemical characterization Elsevier Nitrogen-doped graphene Elsevier Rowshanzamir, Soosan oth Kazeminasab, Bagher oth Parnian, Mohammad Javad oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 https://doi.org/10.1016/j.jpowsour.2014.10.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 273 2015 1 0101 981-989 9 045F 620 |
| spelling |
10.1016/j.jpowsour.2014.10.001 doi GBV00000000000185A.pica (DE-627)ELV013135562 (ELSEVIER)S0378-7753(14)01609-7 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Ghanbarlou, Hosna verfasserin aut Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Fe, Co and Fe–Co nanoparticles Elsevier Solvothermal process Elsevier Oxygen reduction reaction Elsevier Electrochemical characterization Elsevier Nitrogen-doped graphene Elsevier Rowshanzamir, Soosan oth Kazeminasab, Bagher oth Parnian, Mohammad Javad oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 https://doi.org/10.1016/j.jpowsour.2014.10.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 273 2015 1 0101 981-989 9 045F 620 |
| allfields_unstemmed |
10.1016/j.jpowsour.2014.10.001 doi GBV00000000000185A.pica (DE-627)ELV013135562 (ELSEVIER)S0378-7753(14)01609-7 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Ghanbarlou, Hosna verfasserin aut Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Fe, Co and Fe–Co nanoparticles Elsevier Solvothermal process Elsevier Oxygen reduction reaction Elsevier Electrochemical characterization Elsevier Nitrogen-doped graphene Elsevier Rowshanzamir, Soosan oth Kazeminasab, Bagher oth Parnian, Mohammad Javad oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 https://doi.org/10.1016/j.jpowsour.2014.10.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 273 2015 1 0101 981-989 9 045F 620 |
| allfieldsGer |
10.1016/j.jpowsour.2014.10.001 doi GBV00000000000185A.pica (DE-627)ELV013135562 (ELSEVIER)S0378-7753(14)01609-7 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Ghanbarlou, Hosna verfasserin aut Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Fe, Co and Fe–Co nanoparticles Elsevier Solvothermal process Elsevier Oxygen reduction reaction Elsevier Electrochemical characterization Elsevier Nitrogen-doped graphene Elsevier Rowshanzamir, Soosan oth Kazeminasab, Bagher oth Parnian, Mohammad Javad oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 https://doi.org/10.1016/j.jpowsour.2014.10.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 273 2015 1 0101 981-989 9 045F 620 |
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10.1016/j.jpowsour.2014.10.001 doi GBV00000000000185A.pica (DE-627)ELV013135562 (ELSEVIER)S0378-7753(14)01609-7 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Ghanbarlou, Hosna verfasserin aut Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance 2015transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. Fe, Co and Fe–Co nanoparticles Elsevier Solvothermal process Elsevier Oxygen reduction reaction Elsevier Electrochemical characterization Elsevier Nitrogen-doped graphene Elsevier Rowshanzamir, Soosan oth Kazeminasab, Bagher oth Parnian, Mohammad Javad oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 https://doi.org/10.1016/j.jpowsour.2014.10.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 273 2015 1 0101 981-989 9 045F 620 |
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Enthalten in Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method New York, NY [u.a.] volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 |
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Enthalten in Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method New York, NY [u.a.] volume:273 year:2015 day:1 month:01 pages:981-989 extent:9 |
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Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method |
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Ghanbarlou, Hosna @@aut@@ Rowshanzamir, Soosan @@oth@@ Kazeminasab, Bagher @@oth@@ Parnian, Mohammad Javad @@oth@@ |
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non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: synthesis, characterization and electrocatalytic performance |
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Non-precious metal nanoparticles supported on nitrogen-doped graphene as a promising catalyst for oxygen reduction reaction: Synthesis, characterization and electrocatalytic performance |
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Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. |
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Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. |
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Nitrogen-doped graphene (NG) based non-precious metal catalysts is used as a catalyst for oxygen reduction reaction (ORR). Nanoflower-like NG with designed nitrogen types is directly synthesized using a low temperature solvothermal process and then Fe, Co and Fe–Co nanoparticles are precipitated onto the NG using a modified polyol method. The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized M/NG (M = Fe, Co, Fe–Co) electrocatalysts are characterized using transmission electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. Electrochemical characterizations reveal that NG acts as a catalyst for ORR in an alkaline solution. The electrocatalytic properties of NG and M/NG catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. M/NG catalysts exhibit higher electrocatalytic activity than NG and the highest activity is observed for the Co/NG electrode. Chronoamperometric results demonstrate that the Co/NG catalyst is more stable than commercial Pt/C for ORR in an alkaline solution. |
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