Fluorinated electrolytes for Li-ion battery: An FEC-based electrolyte for high voltage LiNi_0.5Mn_1.5O₄/graphite couple

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• 作者：Libo Hu ; Zhengcheng Zhang ; Khalil Amine
• 关键词：Fluorinated solvents ; High voltage electrolyte ; Non-flammable electrolyte ; 5  ; V LiNi0.5Mn1.5O4 cathode ; Lithium-ion batteries
• 刊名：Electrochemistry Communications
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：35
• 期：Complete
• 页码：76-79
• 全文大小：716 K

文摘

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 LiNi_0.5Mn_1.5O₄ as the cathode. The electrolyte shows significantly enhanced voltage stability compared with the conventional electrolytes at elevated temperature (55 ¡ãC). 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.