中南大学学报（自然科学版）2012，Vol.43Issue(10)：3780-3784,5.
改进共沉淀法制备LiCo1/3Ni1/3Mn1/3O2正极材料
Preparation of LiCo1/3Ni1/3Mn1/3O2 cathode material by improved co-precipitation method
摘要
Abstract
LiCo1/3Ni1/3Mn1/3O2 cathode material was synthesized by improved coprecipitation method, which was compared with conventional coprecipitation method, NH3H2O for chelator and PEG for dispersant were added into the solution during the process of preparing the precursor. The appearance and property of products prepared by improved and conventional coprecipitation method were studied. The result reveals that Ni1/3Coi/3Mn1/3(OH)2 precursor synthesized by improved coprecipitation method has spherical secondary particle with the diameter of about 2 μm assembled by the spherical and flaky primary particle, and the tap density of as-prepared LiCo1/3Ni1/3Mn1/3O2 calcinated by precursor and LiOH is 2.78 g/cm3. Besides, its the initial charge/discharge capacity is 185.2/158.3 mAh/gat 0.2C rate in voltage range of 2.80-4.25 V, respectively, and 90.6% of the initial discharge capacity is retained after 30 charge-discharge cycling, electrochemical performance is greatly improved.关键词
改进共沉淀法/LiCo1/3Ni1/3Mn1/3O2/球形二次颗粒Key words
improved coprecipitation method/LiCo1/3Ni1/3Mn1/3O2/spherical secondary particle分类
化学化工引用本文复制引用
谌谷春,唐新村,王志敏..改进共沉淀法制备LiCo1/3Ni1/3Mn1/3O2正极材料[J].中南大学学报（自然科学版）,2012,43(10):3780-3784,5.基金项目
国家自然科学基金资助项目(21276286) （21276286）
