期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 4, 期 25, 页码 9977-9985出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta02950g
关键词
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资金
- Opening Foundation of State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals [SKLAB02015001]
- National Science Foundation of China [51402277, 51402274, 21401180]
- Educational Department of Zhejiang Province [Y201431822]
The applications of traditional asymmetric supercapacitors are restricted due to the low specific capacitance of carbon negative materials. The rational design of positive and negative electrodes that afford high-performance asymmetric devices is particularly important. In this paper, we fabricate a cost-effective, environmental-friendly aqueous asymmetric supercapacitor by using CuCo2O4/CuO nanowire arrays as the positive electrode and RGO/Fe2O3 composites as the negative electrode. The assembled device exhibits a high energy density of 33.0 W h kg(-1) at a power density of 200 W kg(-1), and it still operates at a high power density of 8.0 kW kg(-1) with an energy density of 9.1 W h kg(-1). The current strategy will provide a fresh route for the design and fabrication of novel asymmetric supercapacitors with high energy density and high power density.
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