电化学2011，Vol.17Issue(3)：334-338,5.
包覆碳掺CoLiFePO4正极的电化学性能研究
Electrochemical Performances of C-Coating and Co-Doping LiFePO_4
摘要
Abstract
Phospho-olivine LiFePO4 cathode materials were prepared by hydrothermal reaction at 200 ℃.Sucrose was added as C-coating resource and Co was doped into the crystal lattice of LiFePO4.In order to investigate the improvements in the electrochemical properties of Co-doped LiFePO4,three samples,LiFePO4,C-coated LiFePO4 and C-coating-Co-doped LiFePO4,were synthesized under the same preparation conditions.Charge/discharge studies reveal that the Co-doped LiFePO4/C composite annealed at 400 ℃ exhibits marked improvement of specific capacity by diminishing the particle sizes and enhancement in the degree of crystallinity.The C-coating and Co-doped into the LiFePO4 crystal lattices improve the rate performance through the reduction of the particle sizes.关键词
锂离子电池/LiFePO4/碳包覆/Co掺杂/颗粒大小Key words
lithium ion batteries/cathode material/carbon-coating/Co-doping/particle size分类
信息技术与安全科学引用本文复制引用
白莹,杨觉明,卿春波,张伟风..包覆碳掺CoLiFePO4正极的电化学性能研究[J].电化学,2011,17(3):334-338,5.基金项目
国家自然科学基金 （）
河南省创新人才培养工程 （）
河南省教育厅自然科学基金 （）
河南大学自然科学基金（2008YBZR018）资助 （）
