摘要
用共沉淀法制备前驱体Ni0.5Co0.2Mn0.3(OH)2,焙烧前驱体与Li2CO3制备Li Ni0.5Co0.2Mn0.3O2。用XRD、SEM和DSCTGA分析焙烧中间产物的结构、形貌及变化,探索制备Li Ni0.5Co0.2Mn0.3O2的机理。随着焙烧温度的升高,前驱体分解成(Ni0.5Co0.2Mn0.3)3O4,随后Li2CO3参与反应,形成Li Ni0.5Co0.2Mn0.3O2。Li Ni0.5Co0.2Mn0.3O2的生成在650℃时结束,但层状结构在900℃时才趋于完美。
Ni0.5 Co0.2 Mn0.3 （OH）2 precursor was prepared via coprecipitation method. LiNi0.5Co0.2Mn0.3O2 was synthesized by calcining precursor and Li2CO3. The structure, morphology and evolution of the intermediate products during calcination were analyzed by XRD, SEM and DSC-TGA. The mechanism of synthesizing LiNi0.5Co0.2Mn0.3O2 was explored. The precursor was decomposed into （Ni0.5 Co0.2 Mn0.3）3O4 with the increasing of calcination temperature, then Li2 CO3 participated in the reaction to form LiNi0.5Co0.2Mn0.3O2. The formation of LiNi0.5Co0.2Mn0.3O2 was ended at 650℃, but perfect layered structure tended to perfect until 900℃.
出处
《电池》
CAS
CSCD
北大核心
2014年第5期260-263,共4页
Battery Bimonthly
基金
国家高技术研究发展(863)计划项目(2012AA110102)
北京市科技计划项目(Z121100006712002)
