高电压锂离子正极材料LiNi_(0.5)Mn_(1.5)O_(4)高温特性  

High Temperature Properties of LiNi_(0.5)Mn_(1.5)O_(4) as Cathode Materials for High Voltage Lithium-Ion Batteries

作　　者：高金伙 阮佳锋 庞越鹏[1] 孙皓[1] 杨俊和[1] 郑时有[1] Jinhuo Gao;Jiafeng Ruan;Yuepeng Pang;Hao Sun;Junhe Yang;Shiyou Zheng(School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Department of Materials Science,Fudan University,Shanghai 200433,China)

机构地区：[1]上海理工大学材料科学与工程学院,上海200093 [2]复旦大学材料科学系,上海200433

出　　处：《化学进展》2021年第8期1390-1403,共14页Progress in Chemistry

基　　金：上海市优秀学术带头人计划(No.17XD1403000);上海市教育委员会科研创新重大项目(2019-01-07-00-07-E00015)资助。

摘　　要：随着新能源电动汽车和大容量储能的快速发展,亟需开发高能量密度、高功率密度的锂离子电池。镍锰酸锂(LiNi_(0.5)Mn_(1.5)O_(4))由于具有高电压平台(4.7V)、较高的能量密度和功率密度、资源丰富、成本低等优点,被认为是最具潜力的锂离子电池正极材料之一。然而,在高温条件下,LiNi_(0.5)Mn_(1.5)O_(4)会与电解液发生严重的界面副反应,导致循环性能变差,这严重制约了其商业化进程。因此,改善LiNi_(0.5)Mn_(1.5)O_(4)的高温特性成为锂离子电池领域的研究热点之一。本文对近期LiNi_(0.5)Mn_(1.5)O_(4)材料相关研究的主要成果进行综述,以LiNi_(0.5)Mn_(1.5)O_(4)的基本特性和现存挑战入手,着重关注离子掺杂、表面包覆和表面掺杂等策略提升材料的高温性能,并为后续研究提出建议和展望。The rapid development of electric vehicles and large-scale energy storage systems have created a huge demand for high energy density and power density lithium-ion batteries in the market.Because of the advantages such as high voltage(4.7 V vs.Li/Li+),high energy density and power density,abundant resources and low cost,LiNi_(0.5)Mn_(1.5)O_(4)is considered as one of the most promising lithium-ion battery cathode materials.However,the severe undesirable side reactions between LiNi_(0.5)Mn_(1.5)O_(4)and electrolyte at elevated temperature leads to worse cycling performance,which limits its commercial application.Therefore,improving the high-temperature performance of LiNi_(0.5)Mn_(1.5)O_(4)has become one of the research hotspots in the field of lithium-ion batteries.In this paper,the main achievements of recent researches on LiNi_(0.5)Mn_(1.5)O_(4)materials are reviewed.Starting with the basic characteristics and existing challenges of LiNi_(0.5)Mn_(1.5)O_(4),strategies such as ion doping,surface coating and surface doping are focused on improving the high-temperature performance.In addition,suggestions and prospects are put forward for subsequent research.

关 键 词：锂离子电池 LiNi_(0.5)Mn_(1.5)O_(4) 体相掺杂 表面掺杂 表面包覆 高温性能 

分 类 号：O646[理学—物理化学] TM911[理学—化学]