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Fluorinated electrolytes for Li-ion battery: An FEC-based electrolyte for high voltage LiNi0.5Mn1.5O4/graphite couple

2013; Elsevier BV; Volume: 35; Linguagem: Inglês

10.1016/j.elecom.2013.08.009

1873-1902

Libo Hu, Zhengcheng Zhang, Khalil Amine,

Advanced Battery Technologies Research

A new electrolyte based on fluorinated solvents was studied in a high voltage Li-ion cell using graphite as the anode and 5 V spinel LiNi0.5Mn1.5O4 as the cathode. The electrolyte shows significantly enhanced voltage stability compared with the conventional electrolytes at elevated temperature (55 °C). Post-test study of the harvested cathode using FT-IR and SEM indicated that the buildup of organic decomposition product on the cathode surface is negligible for the fluorinated electrolyte.