摘要
介绍了一种采用前驱体碳酸盐共沉淀法制备锂离子电池正极材料Li[Ni1/2Mn1/2]O2的工艺路线。通过对样品进行X射线衍射（XRD）测试，可知产品具有类似钴酸锂的层状结构。通过对产品进行扫描电镜（SEM）观察可以看出，产品具有规则的球形形貌，且粒径在5-10μm；电化学测试表明，材料的首次放电比容量大于170mA·h／g，循环20次后容量保持率大于98％。
A synthetic route for the preparation of Li[Ni1/2Mn1/2]O2,a cathode material of lithium ion battery,by co- precipitation method with carbonate as precursor was introduced.X-ray diffraction （XRD） was used to analyze the sample and results indicated the sample had a layer structure which was similar with LiCoO2.The particle size and morphology were characterized by scan electron microscopy （SEM）,and the SEM results indicated that the sample had a regular spherical shape, and the particle size was at 5-10μm.The result of electrochemical test showed that initial discharge specific capacity of the Li[Ni1/2Mn1/2]O2 was above 170 mA· h/g, and the specific capacity retention could keep more than 98% after 20 times charge-discharge cycles.
出处
《无机盐工业》
CAS
北大核心
2012年第12期54-55,共2页
Inorganic Chemicals Industry
