Electrochemical performance of Co3O4 electrode materials derived from Co metal-organic framework

doi:10.19799/j.cnki.2095-4239.2021.0585

Abstract

Abstract:

As a green energy storage device, supercapacitors have attracted much attention due to their high power density, low cost, and excellent environmental protection compared to secondary energy storage batteries. Electrode materials, electrolytes, and diaphragms affect the electrochemical performance of supercapacitors. Herein, we synthesize Co₃O₄ nanoleaves derived from metal-organic framework structure by a simple hydrothermal route. The prepared product shows a porous structure. By optimizing the solution concentration and reaction time, the electrode material delivers a specific capacitance of 156 F·g^-1 at a current density of 0.5 A·g^-1. After 6000 cycles, the device retained 80% of the initial capacity. An assembled device delivers a power density of 22.5 W·kg^-1 at an energy density of 157.5 W·h·kg^-1. Even after 8000 cycles, it still possesses an excellent specific capacity.

Key words: MOF, supercapacitor, electrochemical performance, power density

CLC Number:

O 646.542

Yongli TONG, Xiang WU. Electrochemical performance of Co₃O₄ electrode materials derived from Co metal-organic framework[J]. Energy Storage Science and Technology, 2022, 11(3): 1035-1043.

Figures/Tables 5

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References 22

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Electrochemical performance of Co₃O₄ electrode materials derived from Co metal-organic framework

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