Designing functional Li2CuO2-coated separators from Cu foil towards spent LiFePO4 cathode regeneration

Zihao Zeng; Hai Lei; Jiexiang Li; Zhengqiao Yuan; Bing Wang; Wenqing Zhao; Yue Yang; Peng Ge

doi:10.1039/D4CC00227J

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Designing functional Li₂CuO₂-coated separators from Cu foil towards spent LiFePO₄ cathode regeneration†

Zihao Zeng,^a Hai Lei,^b Jiexiang Li,^a Zhengqiao Yuan,^a Bing Wang,^a Wenqing Zhao,^a Yue Yang

^a and Peng Ge

*^a

Author affiliations

* Corresponding authors

^a School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
E-mail: gp-gepeng@csu.edu.cn

^b Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China

Abstract

A chemical-physical investigation proved that the loss of active Li represents the main mechanism of capacity-fading in spent LiFePO₄. Given this, functional Li₂CuO₂-coated separators were fabricated from spent Cu foil and found to contribute to the regeneration of spent LiFePO₄ in a full-cell system. This study presents a novel method for cathode/Cu foil recovery.

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Article information

DOI: https://doi.org/10.1039/D4CC00227J
Article type: Communication
Submitted: 16 Jan 2024
Accepted: 09 Feb 2024
First published: 22 Feb 2024

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Chem. Commun., 2024,60, 3059-3062

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Designing functional Li₂CuO₂-coated separators from Cu foil towards spent LiFePO₄ cathode regeneration

Z. Zeng, H. Lei, J. Li, Z. Yuan, B. Wang, W. Zhao, Y. Yang and P. Ge, Chem. Commun., 2024, 60, 3059 DOI: 10.1039/D4CC00227J

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Chemical Communications