High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability
In this work, MnO2/GO (graphene oxide) composites with novel multilayer nanoflake structure, and a carbon material derived from Artemia cyst shell with genetic 3D hierarchical porous structure (HPC), are prepared. An asymmetric supercapacitor has been fabricated using MnO2/GO as positive electrode a...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/107133 http://hdl.handle.net/10220/25360 |
| _version_ | 1826125810353831936 |
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| author | Zhao, Yufeng Ran, Wei He, Jing Huang, Yizhong Liu, Zhifeng Liu, Wei Tang, Yongfu Zhang, Long Gao, Dawei Gao, Faming |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Zhao, Yufeng Ran, Wei He, Jing Huang, Yizhong Liu, Zhifeng Liu, Wei Tang, Yongfu Zhang, Long Gao, Dawei Gao, Faming |
| author_sort | Zhao, Yufeng |
| collection | NTU |
| description | In this work, MnO2/GO (graphene oxide) composites with novel multilayer nanoflake structure, and a carbon material derived from Artemia cyst shell with genetic 3D hierarchical porous structure (HPC), are prepared. An asymmetric supercapacitor has been fabricated using MnO2/GO as positive electrode and HPC as negative electrode material. Because of their unique structures, both MnO2/GO composites and HPC exhibit excellent electrochemical performances. The optimized asymmetric supercapacitor could be cycled reversibly in the high voltage range of 0–2 V in aqueous electrolyte, which exhibits maximum energy density of 46.7 Wh kg−1 at a power density of 100 W kg−1 and remains 18.9 Wh kg−1 at 2000 W kg−1. Additionally, such device also shows superior long cycle life along with ∼100% capacitance retention after 1000 cycles and ∼93% after 4000 cycles. |
| first_indexed | 2024-10-01T06:42:27Z |
| format | Journal Article |
| id | ntu-10356/107133 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:42:27Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1071332020-06-01T10:13:41Z High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability Zhao, Yufeng Ran, Wei He, Jing Huang, Yizhong Liu, Zhifeng Liu, Wei Tang, Yongfu Zhang, Long Gao, Dawei Gao, Faming School of Materials Science & Engineering DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry In this work, MnO2/GO (graphene oxide) composites with novel multilayer nanoflake structure, and a carbon material derived from Artemia cyst shell with genetic 3D hierarchical porous structure (HPC), are prepared. An asymmetric supercapacitor has been fabricated using MnO2/GO as positive electrode and HPC as negative electrode material. Because of their unique structures, both MnO2/GO composites and HPC exhibit excellent electrochemical performances. The optimized asymmetric supercapacitor could be cycled reversibly in the high voltage range of 0–2 V in aqueous electrolyte, which exhibits maximum energy density of 46.7 Wh kg−1 at a power density of 100 W kg−1 and remains 18.9 Wh kg−1 at 2000 W kg−1. Additionally, such device also shows superior long cycle life along with ∼100% capacitance retention after 1000 cycles and ∼93% after 4000 cycles. 2015-04-10T06:37:33Z 2019-12-06T22:25:26Z 2015-04-10T06:37:33Z 2019-12-06T22:25:26Z 2014 2014 Journal Article Zhao, Y., Ran, W., He, J., Huang, Y., Liu, Z., Liu, W., et al. (2015). High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability. Small, 11(11), 1310-1319. 1613-6810 https://hdl.handle.net/10356/107133 http://hdl.handle.net/10220/25360 10.1002/smll.201401922 en Small © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry Zhao, Yufeng Ran, Wei He, Jing Huang, Yizhong Liu, Zhifeng Liu, Wei Tang, Yongfu Zhang, Long Gao, Dawei Gao, Faming High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| title | High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| title_full | High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| title_fullStr | High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| title_full_unstemmed | High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| title_short | High-performance asymmetric supercapacitors based on multilayer MnO2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| title_sort | high performance asymmetric supercapacitors based on multilayer mno2 graphene oxide nanoflakes and hierarchical porous carbon with enhanced cycling stability |
| topic | DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry |
| url | https://hdl.handle.net/10356/107133 http://hdl.handle.net/10220/25360 |
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