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.
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
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
lithium-ion battery
cathode material
Li-Ni-Co-O oxides
co-precipitation
synthesis
electrochemistry performance
