Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte
1
Department of Chemistry, Tsinghua University, Beijing 100084, China
2
School of Chemical Engineering & the Environment, Beijing Institute of Technology, Beijing 100081, China
3
National Development Center of High Technology Green Materials, Beijing 100081, China
*
Author to whom correspondence should be addressed.
World Electr. Veh. J. 2010, 4(2), 396-399; https://doi.org/10.3390/wevj4020396
Published: 25 June 2010
Abstract
The electrochemical performance of LiFePO4/C cathode in a carbonate-based electrolyte (1.0M LiPF6/EC-DMC-PC-FEC) was tested in coin type cells at low temperatures. The discharge capacities of the LiFePO4/C cathode were about 161.6mAh/g (20℃), 141.4mAh/g (-10℃) and 112.9mAh/g (-20℃) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO4/C cathode was determined at different temperatures using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The analyses demonstrate that the sluggish of charge-transfer reaction on the LiFePO4/C-electrolyte interface and the dramatic decrease in lithium ion diffusivity in the bulk LiFePO4/C material were the key performance limiting factors at low temperature.
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MDPI and ACS Style
Yao, J.; Wu, F.; Wu, B.; Qiu, X.; Yang, C.; Li, N. Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte. World Electr. Veh. J. 2010, 4, 396-399. https://doi.org/10.3390/wevj4020396
AMA Style
Yao J, Wu F, Wu B, Qiu X, Yang C, Li N. Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte. World Electric Vehicle Journal. 2010; 4(2):396-399. https://doi.org/10.3390/wevj4020396
Chicago/Turabian StyleYao, Jingwen, Feng Wu, Borong Wu, Xinping Qiu, Chunwei Yang, and Ning Li. 2010. "Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte" World Electric Vehicle Journal 4, no. 2: 396-399. https://doi.org/10.3390/wevj4020396
