INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Electrochemical Properties Study of Metal-Organic Framework-derived Carbon-coated CoS2 Polyhedral Materials |
BAI Jinglong1, YUAN Lihua1, DAI Yile1, ZHAO Jiwei1, HE Yanxia1, WEI Zhiqiang1,2,*
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1 School of Science, Lanzhou University of Technology, Lanzhou 730050, China 2 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
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Abstract This study successfully synthesized CoS2/C composites with a truncated dodecahedral structure using a solvothermal synthesis combined with high-temperature sulfuration method. Characterization techniques revealed the material’s microstructure, showcasing its large specific surface area and abundant mesoporous structure. In a three-electrode system test, the CoS2/C material exhibited favorable cyclic voltammetry curves, high specific capacitance (126.2 mAh/g, equivalent to 1 135.6 F/g at 1 A/g), low impedance, and exceptional long-cycle efficiency. The asymmetric supercapacitor assembled with activated carbon also performed well, achieving a specific capacitance of 93.6 F/g at 1 A/g. This supercapacitor device delivered an energy density of 33.3 Wh/kg at a power density of 800 W/kg. The results indicate that the CoS2/C material exhibits outstanding electrochemical performance in the field of supercapacitor electrode materials, holding promising applications.
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Published: 15 August 2025
Online: 2025-08-15
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