A novel three-dimensional manganese dioxide electrode for high performance supercapacitors
Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven t...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Kong, Shuying [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016transfer abstract |
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| Schlagwörter: |
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| Umfang: |
8 |
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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:308 ; year:2016 ; day:15 ; month:03 ; pages:141-148 ; extent:8 |
| Links: |
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| DOI / URN: |
10.1016/j.jpowsour.2016.01.076 |
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ELV019423330 |
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| 245 | 1 | 0 | |a A novel three-dimensional manganese dioxide electrode for high performance supercapacitors |
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| 520 | |a Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. | ||
| 520 | |a Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. | ||
| 650 | 7 | |a Manganese dioxide |2 Elsevier | |
| 650 | 7 | |a Graphene |2 Elsevier | |
| 650 | 7 | |a Supercapacitor |2 Elsevier | |
| 650 | 7 | |a Nanowire array |2 Elsevier | |
| 650 | 7 | |a Hydrothermal |2 Elsevier | |
| 700 | 1 | |a Cheng, Kui |4 oth | |
| 700 | 1 | |a Gao, Yinyi |4 oth | |
| 700 | 1 | |a Ouyang, Tian |4 oth | |
| 700 | 1 | |a Ye, Ke |4 oth | |
| 700 | 1 | |a Wang, Guiling |4 oth | |
| 700 | 1 | |a Cao, Dianxue |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.2016.01.076 doi GBVA2016013000015.pica (DE-627)ELV019423330 (ELSEVIER)S0378-7753(16)30076-3 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Kong, Shuying verfasserin aut A novel three-dimensional manganese dioxide electrode for high performance supercapacitors 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Manganese dioxide Elsevier Graphene Elsevier Supercapacitor Elsevier Nanowire array Elsevier Hydrothermal Elsevier Cheng, Kui oth Gao, Yinyi oth Ouyang, Tian oth Ye, Ke oth Wang, Guiling oth Cao, Dianxue 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:308 year:2016 day:15 month:03 pages:141-148 extent:8 https://doi.org/10.1016/j.jpowsour.2016.01.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 308 2016 15 0315 141-148 8 045F 620 |
| spelling |
10.1016/j.jpowsour.2016.01.076 doi GBVA2016013000015.pica (DE-627)ELV019423330 (ELSEVIER)S0378-7753(16)30076-3 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Kong, Shuying verfasserin aut A novel three-dimensional manganese dioxide electrode for high performance supercapacitors 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Manganese dioxide Elsevier Graphene Elsevier Supercapacitor Elsevier Nanowire array Elsevier Hydrothermal Elsevier Cheng, Kui oth Gao, Yinyi oth Ouyang, Tian oth Ye, Ke oth Wang, Guiling oth Cao, Dianxue 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:308 year:2016 day:15 month:03 pages:141-148 extent:8 https://doi.org/10.1016/j.jpowsour.2016.01.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 308 2016 15 0315 141-148 8 045F 620 |
| allfields_unstemmed |
10.1016/j.jpowsour.2016.01.076 doi GBVA2016013000015.pica (DE-627)ELV019423330 (ELSEVIER)S0378-7753(16)30076-3 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Kong, Shuying verfasserin aut A novel three-dimensional manganese dioxide electrode for high performance supercapacitors 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Manganese dioxide Elsevier Graphene Elsevier Supercapacitor Elsevier Nanowire array Elsevier Hydrothermal Elsevier Cheng, Kui oth Gao, Yinyi oth Ouyang, Tian oth Ye, Ke oth Wang, Guiling oth Cao, Dianxue 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:308 year:2016 day:15 month:03 pages:141-148 extent:8 https://doi.org/10.1016/j.jpowsour.2016.01.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 308 2016 15 0315 141-148 8 045F 620 |
| allfieldsGer |
10.1016/j.jpowsour.2016.01.076 doi GBVA2016013000015.pica (DE-627)ELV019423330 (ELSEVIER)S0378-7753(16)30076-3 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Kong, Shuying verfasserin aut A novel three-dimensional manganese dioxide electrode for high performance supercapacitors 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Manganese dioxide Elsevier Graphene Elsevier Supercapacitor Elsevier Nanowire array Elsevier Hydrothermal Elsevier Cheng, Kui oth Gao, Yinyi oth Ouyang, Tian oth Ye, Ke oth Wang, Guiling oth Cao, Dianxue 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:308 year:2016 day:15 month:03 pages:141-148 extent:8 https://doi.org/10.1016/j.jpowsour.2016.01.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 308 2016 15 0315 141-148 8 045F 620 |
| allfieldsSound |
10.1016/j.jpowsour.2016.01.076 doi GBVA2016013000015.pica (DE-627)ELV019423330 (ELSEVIER)S0378-7753(16)30076-3 DE-627 ger DE-627 rakwb eng 620 620 DE-600 690 VZ 50.92 bkl Kong, Shuying verfasserin aut A novel three-dimensional manganese dioxide electrode for high performance supercapacitors 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. Manganese dioxide Elsevier Graphene Elsevier Supercapacitor Elsevier Nanowire array Elsevier Hydrothermal Elsevier Cheng, Kui oth Gao, Yinyi oth Ouyang, Tian oth Ye, Ke oth Wang, Guiling oth Cao, Dianxue 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:308 year:2016 day:15 month:03 pages:141-148 extent:8 https://doi.org/10.1016/j.jpowsour.2016.01.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 308 2016 15 0315 141-148 8 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:308 year:2016 day:15 month:03 pages:141-148 extent:8 |
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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:308 year:2016 day:15 month:03 pages:141-148 extent:8 |
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a novel three-dimensional manganese dioxide electrode for high performance supercapacitors |
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A novel three-dimensional manganese dioxide electrode for high performance supercapacitors |
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Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. |
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Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. |
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Development of MnO2 based electrode materials for supercapacitor application with high comprehensive electrochemical performance, such as high capacitance, superior reversibility, excellent stability, and good rate capability, is still a tremendous challenge. In this work, a distinctive interwoven three-dimensional (3D) structure electrode with ultra-thin 2D graphene nanosheet decorated on the surface of 1D C/TiC nanowire array is built as the support to immobilize MnO2 nanoflakes (MnO2-Graphene nanosheet-C/TiC nanowire array, denoted as MGCT). Compared with the normal 1D core/shell structure, this novel 3D architecture can dramatically not only increase the surface area for MnO2 loading but also facilitate the ion and electron transfer. The electrochemical performance of the as-prepared 3D MnO2 electrode is evaluated by cyclic voltammetrys, galvanostatic charging-discharging tests and electrochemical impedance spectroscopy, high specific capacitance (856 F g−1 at 2 A g−1), good rate capability (69.1% capacitance retention at 40 A g−1 vs 2 A g−1), superior reversibility, and cycling stability (85.7% capacitance retention after 10,000 cycles at 10 A g−1) are obtained, suggesting that this novel structure can offer a new and appropriate idea for obtaining high-performance supercapacitor electrode materials. |
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