首页|Overcharge to Remove Cathode Passivation Layer for Reviving Failed Li-O2 Batteries

Overcharge to Remove Cathode Passivation Layer for Reviving Failed Li-O2 Batteries

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Prolonging the lifetime of batteries is a long-term pursuit,and it is also one of the prerequisites for the practical application of batteries.However,this endeavor is challenging for high-energy Li-O2 batteries due to their poor charge efficiency and cathode passivation-induced by-products accumula-tion.Here,we demonstrated that overcharging Li-O2 batteries could facilitate the decomposition of accu-mulated residue products and revive the cathode;thus,the battery lifespan could be significantly ex-tended.This long battery lifetime not only made full use of the Li anode but also enabled the battery to recycle in a safer way without the risk of firing and explosion.Furthermore,overcharge could be used in Li-O2 batteries with high mass loading,high rate,and large capacity.This overcharge strategy simplified the cathode regenerating procedures and realized system-level efficient use of battery components,thereby prolonging the life of Li-O2 batteries to meet the requirements of practical applications.

overchargeLi-O2 batterybattery liferevivebattery failure mechanism

Kai Chen、Dong-Yue Yang、Jin Wang、Gang Huang、Xin-Bo Zhang

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State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022

School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026

国家自然科学基金国家重点研发计划中国科学院重点研究项目Changchun Science and Technology Development Plan Funding Project王宽诚教育基金

217251032020YFE0204500ZDRW-CN-2021-321ZY06GJTD-2018-09

2023

10.31635/ccschem.022.202201876

中国化学会会刊(英文)

中国化学会会刊(英文)

CSCD
ISSN：
年,卷(期)：2023.5(3)
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