Abstract
Phospho-olivine LiFePO4 cathode materials were prepared by hydrothermal reaction at 200 oC. 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 oC 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.
Graphical Abstract
Keywords
lithium ion batteries, cathode material, carbon-coating, Co-doping, particle size
Publication Date
2011-08-28
Online Available Date
2011-07-05
Revised Date
2011-06-10
Received Date
2011-03-31
Recommended Citation
Ying BAI, Jue-Ming YANG, Chun-Bo QING, Wei-Feng ZHANG.
Electrochemical performances of C-coating and Co-doping LiFePO4[J]. Journal of Electrochemistry,
2011
,
17(3): Article 17.
DOI: 10.61558/2993-074X.2850
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol17/iss3/17
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