Low-cost high-performance asymmetric supercapacitors based on Co2AlO4@MnO2 nanosheets and Fe3O4 nanoflakes
| Autor: | Shijin Zhu, Zhong Quan Wen, Fei Li, Jia Qi Jia, Xiaoying Liu, Yuxin Zhang, Hao Chen, Chao He Xu, Fan Dong |
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| Rok vydání: | 2016 |
| Předmět: |
Supercapacitor
High energy Materials science Renewable Energy Sustainability and the Environment chemistry.chemical_element Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance 0104 chemical sciences Nickel chemistry Energy density General Materials Science Operating voltage 0210 nano-technology Current density Power density |
| Zdroj: | Journal of Materials Chemistry A. 4:2096-2104 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c5ta09914e |
| Popis: | The development of portable and wearable electronics has promoted the increasing demand for high-performance power sources with high energy/power density, low cost, lightweight, as well as ultrathin and flexible features. Herein, a low-cost high-performance flexible asymmetric supercapacitor (ASC) with Co2AlO4@MnO2 nanosheets and Fe3O4 nanoflakes grown on nickel foam is designed and fabricated. The as-designed ASC device with an extended operating voltage window of 1.6 V achieves a specific capacitance of 99.1 F g−1 at a current density of 2 A g−1 with a maximum energy density of 35.3 W h kg−1 and very long-term cycling stability (92.4% capacitance after 5000 cycles). |
| Databáze: | OpenAIRE |
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