Study on Pseudocapacitance of Embedded Cobalt Tetroxide Anode Materials

ZHOU Jiaying; LI Shuangpeng; XIAO Huang; GAO Yun; XIA Xiaohong

doi:10.6054/j.jscnun.2023013

Journal of South China Normal University (Natural Science Edition) > 2023 > 55(2): 1-9. > DOI: 10.6054/j.jscnun.2023013

ZHOU Jiaying, LI Shuangpeng, XIAO Huang, GAO Yun, XIA Xiaohong. Study on Pseudocapacitance of Embedded Cobalt Tetroxide Anode Materials[J]. Journal of South China Normal University (Natural Science Edition), 2023, 55(2): 1-9. DOI: 10.6054/j.jscnun.2023013

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Study on Pseudocapacitance of Embedded Cobalt Tetroxide Anode Materials

MOE Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China

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Received Date: April 06, 2022
Available Online: June 13, 2023

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Abstract

Abstract

The embedded Co₃O₄/CC flexible self-supporting anode material was prepared by using ZIF-67 as self-sacrificing template. Due to the interlaced conductive network structure and the existence of Co₃O₄ oxygen defect in carbon fabric matrix, the lithium ion transport is accelerated and the structural stability is improved. The Co₃O₄/CC anode material shows excellent battery performance, and the discharge specific capacity can still reach 518 mAh/g after 1 000 cycles at 5 A/g high current density. The high capacitance of Co₃O₄/CC anode is mainly due to pseudocapacitance effect, and the presence of pseudocapacitance is supported by ultra-fast surface/near-surface REDOX reaction detected by in-situ Raman spectroscopy.
- pseudocapacitance,
- anode materials,
- cobalt tetroxide,
- lithium-ion battery

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