高镍三元锂离子电池正极材料改性研究进展  

Review of modification of high-nickel NCAcathode materials for lithium-ion battery

作　　者：张一博 后小毅 赵亮 胡雷雷 许乐 高艳龙 康宇龙 ZHANG Yibo;HOU Xiaoyi;ZHAO Liang;HU Leilei;XU Le;GAO Yanlong;KANG Yulong(College of Physics and Electronic Information Engineering,Qinghai Normal University,Xining Qinghai 810000,China;Academy of Plateau Science and Sustainability,Xining Qinghai 810016,China)

机构地区：[1]青海师范大学物理与电子信息工程学院,青海西宁810000 [2]高原科学与可持续发展研究院,青海西宁810016

出　　处：《电源技术》2024年第10期1893-1900,共8页Chinese Journal of Power Sources

摘　　要：高镍三元锂离子电池具有能量密度高、工作电压高、安全性能好、无记忆效应等优点,被认为是下一代最有潜力的高能量密度锂离子电池。但在使用过程中出现的阳离子混排、微裂纹、结构不稳定等问题导致了较差的循环性能、倍率性能、热稳定性,限制了其进一步发展。鉴于此,综述了近年来对三元正极材料的改性方法,介绍了体相掺杂、表面包覆、多元素改性的方法对三元正极材料的性能影响,并展望了未来发展趋势和应用前景。The high-nickel ternary lithium-ion battery has the advantages of high energy density,high operating voltage,good safety performance and no memory effect,which is considered to be the next generation of high energy density lithium-ion batteries with the most potential.However,the problems such as cation mixing,microcracking and structural instability during the use lead to the poor cycling performance,rate performance and thermal stability,limiting the further development.The modification methods of ternary cathode materials in recent years were reviewed,the effect of the bulk phase doping,surface coating and multi-element modification method on the performance of ternary cathode materials was introduced,and the future development trend and application prospects were looked forward.

关 键 词：NCA正极材料 掺杂改性 包覆改性 多元素改性 

分 类 号：TM912.9[电气工程—电力电子与电力传动]