功率型LiNi_(0.5)Mn_(1.5)O_4正极材料的研究进展

Research progress of power type LiNi_(0.5)Mn_(1.5)O_4 cathode materials

电动汽车等高功率用电终端对提高锂离子电池的工作电压提出了更高要求,镍锰酸锂因具有4.7 V的放电电压而成为高功率锂离子电池正极材料的首选。综述了镍锰酸锂正极材料的结构特点、制备方法,并介绍了通过掺杂,包覆和控制形貌来提高其倍率、循环等电化学性能的研究进展,为功率型锂离子电池的研发提供了参考。

High power electric equipments like electric cars put forward higher requirements for the improvement of lithium ion battery voltage. LiNi_（0.5）Mn_（1.5）O_4 was the most promising cathode material for high-power lithium-ion battery due to the discharge voltage of 4.7 V. The structural characteristics and production methods of LiNi_（0.5）Mn_（1.5）O_4 cathode material were summarized. The research progress of improving electrochemical properties such as rate and cycling by doping, coating and controlling morphology was introduced, providing reference for the development of power type lithium-ion battery.