锂离子电池正极材料锂镍钴氧化物的研究  

Study on cathode material LiNi_(0.5)Co_(0.5)O_2 for lithium-ion battery

作　　者：桂阳海[1] 赵恒勤[2] 胡国荣[3] 

机构地区：[1]华中科技大学材料科学与工程学院,武汉430074 [2]中国地质科学院郑州矿产综合利用研究所,郑州450006 [3]中南大学冶金科学与工程系,长沙410083

出　　处：《矿产保护与利用》2004年第6期34-38,共5页Conservation and Utilization of Mineral Resources

摘　　要：采用共沉淀法合成了镍钴氧化物前驱体,再与LiOH·H2O固相混合,在氧气氛下高温焙烧合成锂离子电池正极材料锂镍钴氧化物LiNi0.5Co0.5O2,对所得化合物进行了合成条件及电化学性能的研究;同时也进行了相关的XRD、SEM、CV表征研究。得到的LiNi0.5Co0.5O2化合物性能比较优良,其首次充电比容量可达157.6mA·h/g,放电比容量达142.8mA·h/g。The co-precipitation technology was employed to synthesize the precursor of Ni and Co oxides. With the precursor mixed with LiOH·H_2O in solid state then sintered in O_2 atmosphere , Li-Ni-Co-O oxides can be obtained as cathode material for lithium-ion battery. Experiments of synthesis condition and electrochemistry performance as well as characteristics of XRD, SEM, CV for Li-Ni-Co-0 oxides were carried out. The obtained compound LiNi_~0.5)Co_~0.5)O_2 exhibited a good performance whose initial charge/discharge specific capacity reached 157.6 mA·h/g and 142.8 mA·h/g respectively.

关 键 词：锂离子电池 正极材料 锂镍钴氧化物 共沉淀法 合成 电化学性能 

分 类 号：TM911.11[电气工程—电力电子与电力传动]