首页|High-Voltage and Fast-Charging Lithium Cobalt Oxide Cathodes:From Key Challenges and Strategies to Future Perspectives

High-Voltage and Fast-Charging Lithium Cobalt Oxide Cathodes:From Key Challenges and Strategies to Future Perspectives

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Lithium-ion batteries(LIBs)with the"double-high"characteristics of high energy density and high power density are in urgent demand for facilitating the development of advanced portable electronics.However,the lithium ion(Li+)-storage performance of the most commercialized lithium cobalt oxide(LiCoO2,LCO)cathodes is still far from satisfactory in terms of high-voltage and fast-charging capabilities for reaching the double-high target.Herein,we systematically summarize and discuss high-voltage and fast-charging LCO cathodes,covering in depth the key fundamental challenges,latest advancements in modification strategies,and future perspectives in this field.Comprehensive and elaborated discussions are first pre-sented on key fundamental challenges related to structural degradation,interfacial instability,the inho-mogeneity reactions,and sluggish interfacial kinetics.We provide an instructive summary of deep insights into promising modification strategies and underlying mechanisms,categorized into element doping(Li-site,cobalt-/oxygen-site,and multi-site doping)for improved Li+diffusivity and bulk-structure stability;surface coating(dielectrics,ionic/electronic conductors,and their combination)for surface stability and conductivity;nanosizing;combinations of these strategies;and other strategies(i.e.,optimization of the electrolyte,binder,tortuosity of electrodes,charging protocols,and pre-lithiation methods).Finally,forward-looking perspectives and promising directions are sketched out and insightfully elucidated,providing constructive suggestions and instructions for designing and realiz-ing high-voltage and fast-charging LCO cathodes for next-generation double-high LIBs.

Lithium cobalt oxideHigh energy/power densityFast-chargingHigh-voltageLithium-ion battery

Gongrui Wang、Zhihong Bi、Anping Zhang、Pratteek Das、Hu Lin、Zhong-Shuai Wu

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State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China

Dalian National Laboratory for Clean Energy,Chinese Academy of Sciences,Dalian 116023,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaDalian Innovation Support Plan for High Level TalentsDalian National Laboratory For Clean Energy(DNL)Chinese Academy of Sciences(CAS)DNL Cooperation Fund,CASDNL Cooperation Fund,CASDalian Institute of Chemical PhysicsExploratory Research Project of Yanchang Petroleum International Limited and DICPJoint Fund of the Yulin University and the Dalian National Laboratory for Clean EnergyJoint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy

2022YFA15041002212590351872283220052982019RT09DNL202016DNL202019DICP 12020032ychw-2022ky-01YLU-DNL Fund 20210022021009

2024

10.1016/j.eng.2023.08.021

工程(英文)

工程(英文)

CSTPCDEI
ISSN：2095-8099
年,卷(期)：2024.37(6)
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