锂离子电池单晶三元正极材料的研究进展  

Research progress of single crystal ternary cathodes for lithium-ion batteries

作　　者：王得凯 孙明亮[1] 王晓刚[2] 崔光磊[2] WANG Dekai;SUN Mingliang;WANG Xiaogang;CUI Guanglei(School of Materials Science and Engineering,Ocean University of China,Qingdao Shandong 266100,China;Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao Shandong 266101,China)

机构地区：[1]中国海洋大学材料科学与工程学院,山东青岛266100 [2]中国科学院青岛生物能源与过程研究所,山东青岛266101

出　　处：《电源技术》2023年第12期1519-1525,共7页Chinese Journal of Power Sources

基　　金：山东省自然科学基金(ZR2020MB043)。

摘　　要：单晶三元正极材料既具备层状正极材料的优势,又因为颗粒单晶化而不存在晶间裂纹问题,展现出优良的充放电循环性能,因而被认为是最有前途的锂离子电池正极材料之一。从单晶三元正极材料的固相烧结法制备出发,系统地讨论了单晶三元正极材料的优势及其面临的一些挑战,详细阐述了可优化其电化学性能的掺杂和包覆等改性策略,最后展望了单晶三元正极材料可能的发展方向。The single crystal ternary cathodes have the advantages of layered cathodes without the problem of intergranular crack,and show excellent charge-discharge cycle performance.Therefore,they are considered as one of the most promising cathodes for lithium-ion batteries.The advantages and challenges of single-crystal ternary cathodes were systematically discussed based on the solid-phase sintering method,and the modification strategies such as doping and coating which can optimize the electrochemical performance of single crystal ternary cathode materials were emphasized.Finally,the possible development direction of single crystal ternary cathode materials was prospected.

关 键 词：单晶 三元正极材料 锂离子电池 

分 类 号：TM912[电气工程—电力电子与电力传动]