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Enhanced electrochemical performance and thermal stability of LiNi(0.5)Mn(1.5)O4 using an electrolyte with sulfolane.

Abstract
A sulfide-based SEI layer was formed on the surface of a LiNi0.5Mn1.5O4 cathode by using a sulfolane-carbonate mixed solvent electrolyte, which led to an improvement in the electrochemical performance. Moreover, the thermal stability of the LiNi0.5Mn1.5O4 cathode was also significantly improved in the presence of the SEI layer. ARC (Accelerating Rate Calorimetry) tests showed that the self-heating rate of the delithiated LiNi0.5Mn1.5O4 material in the sulfolane-carbonate electrolyte was suppressed.
AuthorsQian Zhang, Jia-Jia Chen, Xue-Yin Wang, Cheng Yang, Ming-Sen Zheng, Quan-Feng Dong
JournalPhysical chemistry chemical physics : PCCP (Phys Chem Chem Phys) Vol. 17 Issue 16 Pg. 10353-7 (Apr 28 2015) ISSN: 1463-9084 [Electronic] England
PMID25824866 (Publication Type: Journal Article)

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