期刊
NANO ENERGY
卷 10, 期 -, 页码 222-228出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2014.09.019
关键词
Micro-stipercapacitor; Graphene; Flexible; Self-assemble; Room-temperature
类别
资金
- Advanced Research Project Agency-Energy (ARPA-E) Program [DE-AR0000303]
- National Natural Science Foundation of China [11272008, 11361161001]
- Chinese Scholarship Council
Graphene based micro-supercapacitors (MSCs) have been extensively studied in recent years; however, few of them report room temperature fabricating methods for flexible MSC. Here we developed a convenient procedure based on simultaneous self-assembly and reduction of graphene oxide (GO) on Cu/Au interdigit at room temperature. The as-produced MSC shows a specific areal capacitance of 0.95 mF cm(-2) and maintains 98.3% after 11,000 cycles of charge and discharge. Extremely small relaxation time constants of 1.9 ms in aqueous electrolyte and 4.8 ms in gelled electrolyte are achieved. Also the device shows great flexibility and retains 93.5% of the capacitance after 5000 times of bending and twisting tests. (C) 2014 Elsevier Ltd. All rights reserved.
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