高等学校化学学报2018，Vol.39Issue(6)：1267-1273,7.DOI:10.7503/cjcu20170533
LiNi0.8 Co0.2-2x Alx MnxO2材料的制备与电化学储能性能
Preparation and Electrochemical Energy Storage Performances of LiNi0. 8Co(0. 2-2x) AlxMnxO2 Cathode Material
摘要
Abstract
A series of LiNi0. 8 Co(0. 2-2x) Alx Mnx O2( x=0, 0. 005, 0. 01, 0. 025, 0. 04, 0. 05) materials was prepared by high temperature solid phase method. The morphology, structures and electrochemical performances of the materials were characterized. The results showed that all the obtained materials hadα-NaFeO2 structure and the degree of lithium nickel cation mixing decreased first and then increased with the increase of manganese, aluminum elements along with cobalt element decreasing. When x was equal to 0. 01, the material had the lowest degree of lithium nickel cation mixing, the smallest charge transfer impedance and larger lithium ion diffusion coefficient. And the material exhibited the best electrochemical performances and stability among the obtained materials:its discharge capacity was up to 175. 2 mA·h/g at 0. 1C;the capacity retention rate was up to 92. 7％ after 50 cycles at 0. 2C.关键词
高镍材料/锂镍混排/电化学储能性能/共掺杂Key words
High-nickel material/Lithium nickel cation mixing/Electrochemical energy storage performance/Co-doping分类
化学化工引用本文复制引用
李欢,江奇,邱家欣,刘青青,高艺珂,卢晓英,胡爱琳..LiNi0.8 Co0.2-2x Alx MnxO2材料的制备与电化学储能性能[J].高等学校化学学报,2018,39(6):1267-1273,7.基金项目
国家自然科学基金(批准号:50907056, 51602266)、四川省重点研发计划项目(批准号:2017GZ0109)、四川省科技支撑项目(批准号:2016GZ0273, 2016GZ0275)、四川省学术与技术带头人培养基金和四川省成都市科技惠民工程(批准号: 2014-HM01-00073-SF)资助. Supported by the National Natural Science Foundation of China(Nos.50907056, 51602266), the Sichuan Province Key Research and Development Program, China(No.2017GZ0109), the Sichuan Province Science and Technology Support Projects, China(Nos.2016GZ0273, 2016GZ0275) , the Sichuan Province Academic and Technical Leaders Training Fund and the Chengdu Science and Technology Huimin Project, China( No.2014-HM01-00073-SF) . （批准号:50907056, 51602266）
