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Co3O4@NiMoO4 composite electrode materials for flexible hybrid capacitors |
Yongli Tong1,3, Tong Zhang1, Yuchen Sun1, Xiaowei Wang1, Xiang Wu1,2( ) |
1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
2. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
3. School of Science, Shenyang Ligong University, Shenyang 110159, China |
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Abstract Co3O4 nanomaterials as electrodes have been studied widely in the past decade due to their unique structural characteristics. However, their performance does not yet reach the level required for practical applications. It is, nevertheless, an effective strategy to synthesize hybrid electrode materials with high energy density. Herein we prepare Co3O4@NiMoO4 nanowires by a two-step hydrothermal method. The as-obtained sample can be directly used as cathode material of supercapacitors; with specific capacitance of 600 C/g at 1 A/g. An assembled capacitor delivers an energy density of 36.1 Wh/kg at 2700 W/kg, and retains 98.2% of the initial capacity after 8000 cycles.
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| Keywords
Supercapacitor
Co3O4@NiMoO4 nanowires
Specific capacitance
Energy density
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Corresponding Author(s):
Xiang Wu
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Issue Date: 22 June 2022
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