期刊
SCIENTIFIC REPORTS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-018-27171-0
关键词
-
资金
- Fundamental Research Funds for the Central Universities [2452015426]
- Open Project of Key Laboratory of Applied Surface and Colloid Chemistry [2014012]
- Shaanxi Province Science and Technology [2015JQ2057]
A novel NiFe-LDH/RGO/CNFs composite was produced by using a facile one-step hydrothermal method as electrode for supercapacitor. Compared with NiFe-LDH/CNFs, NiFe-LDH/CNTs and NiFe-LDH/RGO, NiFe-LDH/RGO/CNFs demonstrated a high specific capacitance of 1330.2 F g(-1) at 1Ag(-1) and a super rate capability of 64.2% from 1 to 20 A indicating great potential for supercapacitor application. Additionally, an asymmetric supercapacitor using NiFe-LDH/RGO/CNFs composite as positive electrode material and activated carbon as negative electrode material was assembled. The asymmetric supercapacitor can work in the voltage range of 0-1.57V. It displayed high energy density of 33.7W h kg(-1) at power density of 785.8W kg(-1) and excellent cycling stability with 97.1% of the initial capacitance after 2500 cycles at 8 A g(-1). Two flexible AC//LDH-RGO-CNFs ASC devices connected in series were able to light up a red LED indicator after being fully charged. The results demonstrate that the AC//LDH-RGO-CNFs ASC has a promising potential in commercial application.
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