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

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

Chem Commun (Camb). 2024 Mar 12;60(22):3059-3062. doi: 10.1039/d4cc00227j.

Authors

Zihao Zeng¹, Hai Lei², Jiexiang Li¹, Zhengqiao Yuan¹, Bing Wang¹, Wenqing Zhao¹, Yue Yang¹, Peng Ge¹

Affiliations

¹ School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China. gp-gepeng@csu.edu.cn.
² Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China.

PMID: 38384238
DOI: 10.1039/d4cc00227j

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.