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Direct regeneration of degraded lithium-ion battery cathodes with a multifunctional organic lithium salt

Chemistry

Direct regeneration of degraded lithium-ion battery cathodes with a multifunctional organic lithium salt

G. Ji, J. Wang, et al.

Unlock the potential of spent lithium-ion batteries! This groundbreaking research by Guanjun Ji, Junxiong Wang, Zheng Liang, Kai Jia, Jun Ma, Zhaofeng Zhuang, Guangmin Zhou, and Hui-Ming Cheng demonstrates how a multifunctional organic lithium salt revitalizes degraded LiFePO4 cathodes, showcasing remarkable cycling stability and rate performance. Discover how this innovative approach outperforms traditional recycling methods.

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Playback language: English
Abstract
This paper explores the direct regeneration of degraded LiFePO4 cathodes from spent lithium-ion batteries using a multifunctional organic lithium salt (3,4-dihydroxybenzonitrile dilithium, Li2DHBN). The Li2DHBN effectively restores the degraded LiFePO4 by compensating for lithium loss, creating a reductive atmosphere to inhibit Fe(III) formation, and generating a conductive carbon coating to improve electron and ion transfer. The restored cathode exhibits excellent cycling stability and rate performance. Techno-economic analysis suggests this method is superior to traditional recycling methods.
Publisher
Nature Communications
Published On
Feb 03, 2023
Authors
Guanjun Ji, Junxiong Wang, Zheng Liang, Kai Jia, Jun Ma, Zhaofeng Zhuang, Guangmin Zhou, Hui-Ming Cheng
Tags
LiFePO4
lithium-ion batteries
cathode restoration
recycling methods
techno-economic analysis
organic lithium salt
cycling stability
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