Electrochemical Performance of Sandwich-Like Porous Co3O4 Nanostructures on Nickel Foam

Sun, Bo, Zhang, Hui, Chen, Wenge, Elmarakbi, Ahmed and Fu, Yong Qing (2022) Electrochemical Performance of Sandwich-Like Porous Co3O4 Nanostructures on Nickel Foam. Journal of the Electrochemical Society, 169 (10). p. 100530. ISSN 0013-4651

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Official URL: https://doi.org/10.1149/1945-7111/ac99a4

Abstract

Co3O4 is a good anode candidate for high-performance lithium ion batteries (LIBs), attributed to its high specific capacity. However, due to its poor conductivity and significant volume expansion during electrochemical reactions, electrochemical performance of Co3O4 electrode is quite poor for practical applications. Co3O4 electrodes with various micro-/nanostructures have been designed and synthesized but their performances are still unsatisfied. In this study, we propose and develop a novel sandwich type of Co3O4 nanostructures by adjusting the ratio of ammonium fluoride and urea during hydrothermal reactions. When this sandwich-like Co3O4 composite electrode was used as the electrode for LIBs, it retained an outstanding reversible capacity of 857 mAh g−1 after 70 cycles at a current density of 500 mA g−1. When the current density was increased to 1000 mA g−1, the reversible capacity was kept at 865 mAh g−1 with insignificant changes of its capacity.

Item Type: Article
Additional Information: Funding Information: The authors would like to acknowledge the financial supports from Shaanxi Coal Industry Group United Fund of China (No.2019JLM-2), Xi’an Science research project of China (No.2021XJZZ0042) and International Exchange Grant (IEC/NSFC/201078) through Royal Society and National Science Foundation of China (NSFC).
Subjects: F200 Materials Science
H800 Chemical, Process and Energy Engineering
Depositing User: John Coen
Date Deposited: 29 Nov 2022 14:26
Last Modified: 29 Nov 2022 14:30
URI: https://nrl.northumbria.ac.uk/id/eprint/50764

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