期刊
JOURNAL OF POWER SOURCES
卷 196, 期 19, 页码 8073-8084出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2011.04.061
关键词
Lithium ion battery; Electrolyte; Surface analysis
资金
- U.S. Department of Energy Office of Vehicles Technologies
The cycling performance of LiPF(4)(C(2)O(4)) electrolyte is compared with LiPF(6) electrolyte in the presence of several different electrode materials. The cycling of MCMB/LiNi(1/3)Co(1/3)Mn(1/3)O(2) and natural graphite/LiFePO(4) cells provides very similar performance for both electrolytes. However. MCMB/LiMn(2)O(4) cells have a lower initial reversible capacity with LiPF(4)(C(2)O(4)) electrolytes. A detailed analysis of the surface films on both the cathode and the anode via X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) was conducted. The performance differences are attributed to the anode as opposed to the cathode. (C) 2011 Elsevier B.V. All rights reserved.
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