高电压快充钴酸锂正极——关键挑战、改性策略与未来展望（英文）
作者机构：State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Chinese Academy of Sciences
出 版 物：《Engineering》 (工程(英文))
年 卷 期：2024年第6期
页 面：105-127页
核心收录：
基 金：financially supported by the National Key Research and Development Program of China (2022YFA1504100) the National Natural Science Foundation of China (22125903, 51872283, and 22005298) Dalian Innovation Support Plan for High Level Talents (2019RT09) Dalian National Laboratory For Clean Energy (DNL) Chinese Academy of Sciences (CAS) DNL Cooperation Fund, CAS (DNL202016 and DNL202019) Dalian Institute of Chemical Physics (DICP I2020032) Exploratory Research Project of Yanchang Petroleum International Limited and DICP (yc-hw-2022ky-01) the Joint Fund of the Yulin University the Dalian National Laboratory for Clean Energy (YLU-DNL Fund 2021002 and 2021009)
摘 要：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 presented on key fundamental challenges related to structural degradation, interfacial instability, the inhomogeneity 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 bulkstructure 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 prelithiation methods）. Finally, forward-looking perspectives and promising directions are sketched out and insightfully elucidated, providing constructive suggestions and instructions for designing and realizing high-voltage and fast-charging LCO cathodes for next-generation double-high LIBs.
同方期刊数据库