三元镍钴锰酸锂的制备、电化学反应和研究进展  

Preparation,Electrochemical Reaction and Research Progress of Ternary Nickel-cobalt-manganate Lithium

作　　者：高坡 杨雷[2] 任卫 Gao Po;Yang Lei;Ren Wei(Jiangxi University of Science and Technology,Ganzhou 341000,China;College of Materials Science and Engineering,Hunan University,Changsha 410082;Ganzhou Zhanhai New Material Technology Co.,Ltd.,Ganzhou 341000,China)

机构地区：[1]江西理工大学,江西赣州341000 [2]湖南大学材料科学与工程学院,湖南长沙410082 [3]赣州湛海新材料科技有限公司,江西赣州341000

出　　处：《广东化工》2024年第21期85-87,共3页Guangdong Chemical Industry

基　　金：长沙市科技计划(kq2004023)。

摘　　要：化石能源广泛地使用,在全球范围内造成了广泛的环境问题,开发新能源技术已经十分紧迫。循环使用的化学电源是能将电能和化学能进行相互转换。锂离子电池是依靠锂离子在电源正负极之间转移实现充放电过程,因工作电压高,电池体积小,电池质量轻,电池能量密度高,循环寿命长,因而受到广泛的关注。锂离子电池正极材料的制备工艺包括高温固相法,溶胶凝胶法,水热法和溶剂热法等。镍钴锰三元化合物材料存在的问题包括阳离子混排,不可逆相变和热失控等,解决的方法包括材料结构形貌的有效控制,掺杂和修饰改性。镍钴锰三元化合物材料用在锂离子正极材料时,其充放电过程与钴酸锂类似。目前LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)已经运用到圆柱电池和动力电池上,部分代替钴酸锂等材料。目前三元化合物具有非常广阔的应用前景。The extensive use of fossil energy has caused a wide range of environmental problems in the world,and it is urgent to develop new energy technologies.The chemical power supply that is used in circulation can convert electrical energy and chemical energy into each other.Lithium-ion batteries rely on the transfer of lithium ions between the positive and negative terminals of the power supply to achieve charge and discharge process.Because of high operating voltage,small battery size,light battery weight,high battery energy density,and long cycle life,it has been widely concerned.The preparation process of cathode materials for lithium ion batteries includes high temperature solid phase method,sol-gel method,hydrothermal method and solvothermal method.The problems of nickel-cobalt-manganese ternary oxide materials include cationic mixing,irreversible phase transformation and thermal runaway,etc.The solutions include effective control of material structure and morphology,doping and modification.When nickel-cobalt-manganese ternary oxide materials are used as lithium ion cathode materials,the charging and discharging process is similar to that of lithium cobaltate.At present,LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2) has been used in cylindrical batteries and power batteries,partly replacing materials such as lithium cobalt oxide.At present,ternary oxide has a very broad application prospect.

关 键 词：锂离子电池 镍钴锰酸锂 充放电 固相法 水热法 

分 类 号：TQ[化学工程]