期刊
JOURNAL OF POWER SOURCES
卷 238, 期 -, 页码 17-20出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.03.052
关键词
High-voltage lithium-ion battery; LiNi0.4Mn1.6O4; LF30 electrolyte; LiFAP salt; F1EC and SA additives
资金
- 7th European Framework Programme (FP7-Transport), Advanced Fluorinated Materials for High Safety, Energy and Calendar Life Lithium Ion Batteries (AMELIE) Project [265910]
The performance of full cells featuring high-voltage LiNi0.4Mn1.6O4 cathode and graphite anode with carbonate-based electrolytes, ethylene carbonate (EC) -dimethyl carbonate (DMC) with conventional LiPF6 and non-conventional Li[(C2F5)(3)PF3] (LiFAP) lithium salts with and without SEI-forming additives 1-fluoro ethylene carbonate (F1EC) and succinic anhydride (SA) is investigated. The results evidence the beneficial impact of EC-DMC-1M LiFAP electrolyte (LF30), with respect to EC-DMC-1M LiPF6 electrolyte (LP30), also in presence of 1.6% F1EC-2% SA additives, on charge retention over cycling and on self-discharge of full cells. After the 25 cycles of the charge capability test, the charge retention reached values up to 70% with LF30 and 87% with LF30 and additives, and fully charged cells with LF30-additives delivered 53% of the stored charge after one week in OCV. (C) 2013 Elsevier B.V. All rights reserved.
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