期刊
JOURNAL OF POWER SOURCES
卷 195, 期 11, 页码 3680-3683出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2009.12.074
关键词
LiFePO4/C; Cathode material; Lithium-ion batteries; Cl-doping; Rietveld refinement
资金
- 973 Program [2009CB220100]
Cl-cloped LiFePO4/C cathode materials were synthesized through a carbothermal reduction route, and the microstructure and electrochemical performances were systematically studied. Cl-cloped LiFePO4/C cathode materials presented a high discharge capacity of similar to 90mAh g(-1) atthe rateof 20C(3400 mA g(-1)) at room temperature. Electrochemical impedance spectroscopy and cyclic voltamperometry indicated the optimized electrochemical reaction and Li+ diffusion in the bulk of LiFePO4 due to Cl-doping. The improved Li+ diffusion capability is attributed to the microstructure modification of LiFePO4 via Cl-cloping. (C) 2009 Elsevier B.V. All rights reserved.
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