LiNi_(0.9)Mn_(0.1)O_(2)与LiNi_(0.92)Co_(0.06)Mn_(0.02)O_(2)正极材料的电化学性能对比研究  

Electrochemical performance comparison of LiNi_(0.9)Mn_(0.1)O_(2) and LiNi_(0.92)Co_(0.06)Mn_(0.02)O_(2) cathode materials

作　　者：赵阳阳 安香丽 徐云军 程迪 龚乐乐 闫锐 文万超 ZHAO Yangyang;AN Xiangli;XU Yunjun;CHENG Di;GONG Lele;YAN Rui;WEN Wanchao(Henan Kelong Battery Material Co.,Ltd.,Xinxiang Henan 453000,China;Henan Kelong New Energy Co.,Ltd.,Xinxiang Henan 453000,China)

机构地区：[1]河南科隆电源材料有限公司,河南新乡453000 [2]河南科隆新能源股份有限公司,河南新乡453000

出　　处：《电源技术》2025年第4期706-714,共9页Chinese Journal of Power Sources

摘　　要：国内钴资源相对匮乏,多依赖于进口,去钴化成为锂离子电池三元正极材料未来发展方向之一。以高镍无钴LiNi_(0.9)Mn_(0.1)O_(2)二元单晶正极材料和有钴LiNi_(0.92)Co_(0.06)Mn_(0.02)O_(2)三元单晶正极材料为研究对象,分别使用CR2016扣式半电池与604062软包全电池对两种材料的比容量、初始DCR、倍率、循环等电化学性能进行表征,研究了高镍无钴二元单晶正极材料在锂离子电池应用中的可行性。实验结果表明,高镍无钴LiNi_(0.9)Mn_(0.1)O_(2)二元单晶正极材料虽比容量略低于有钴LiNi_(0.92)Co_(0.06)Mn_(0.02)O_(2)三元单晶正极材料,但在循环稳定性方面有明显优势,在钴价上涨的将来,可作为有钴三元正极材料的替代品之一。The relative scarcity of domestic cobalt resources,mostly relying on imports,decobaltization has become one of the future development directions of ternary cathode materials for lithium-ion batteries.In this study,high-nickel cobalt-free LiNi_(0.9)Mn_(0.1)O_(2) binary single crystal cathode material and cobalt-containing LiNi_(0.92)Co_(0.06)Mn_(0.02)O_(2) ternary single crystal cathode material were taken as the objects of study,and the electrochemical performances such as specific capacity,initial DCR,rate and cycling of the two materials were characterized using CR2016 button half battery and 604062 soft pack full battery respectively.The feasibility of the high-nickel cobalt-free binary single crystal cathode material in the application of lithium-ion batteries was investigated.The experimental results show that although the specific capacity of high-nickel cobalt-free LiNi_(0.9)Mn_(0.1)O_(2) binary single crystal cathode material is slightly lower than that of cobalt-containing LiNi_(0.92)Co_(0.06)Mn_(0.02)O_(2) ternary single crystal cathode material,it has obvious advantages in terms of cycle stability.And it can be used as one of the substitutes of the cobalt ternary cathode material when the price of cobalt is unstable in the future.

关 键 词：无钴 层状 高镍单晶 正极材料 锂离子电池 

分 类 号：TM912.9[电气工程—电力电子与电力传动]