Electrolytes for Low Impedance, Wide Operating Temperature Range Lithium-Ion Battery Module

Hallac, Boutros [Inventor]Smart, Marshall C [Inventor]Krause, Frederick C [Inventor]Metz, Bernhard M [Inventor]Bugga, Ratnakumar V [Inventor]Jiang, Junwei [Inventor]

关键词: ELECTROLYTES;    LITHIUM BATTERIES;    ELECTROCHEMICAL CELLS;    CATHODES;    ANODES;    ELECTRIC DISCHARGES;    IMPEDANCE;    LOW TEMPERATURE;    OPERATING TEMPERATURE;    CARBONATES;    ESTERS;    SOLVENTS;    PATENTS;   

RP-ID  :  US-Patent-9,947,960, US-Patent-Appl-SN-14/614,389

学科分类：电子与电气工程

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来源: NASA Technical Reports Server

【 摘 要 】

A lithium ion battery cell includes a housing, a cathode disposed within the housing, wherein the cathode comprises a cathode active material, an anode disposed within the housing, wherein the anode comprises an anode active material, and an electrolyte disposed within the housing and in contact with the cathode and anode. The electrolyte consists essentially of a solvent mixture, a lithium salt in a concentration ranging from approximately 1.0 molar (M) to approximately 1.6 M, and an additive mixture. The solvent mixture includes a cyclic carbonate, an non-cyclic carbonate, and a linear ester. The additive mixture consists essentially of lithium difluoro(oxalato)borate (LiDFOB) in an amount ranging from approximately 0.5 weight percent to approximately 2.0 weight percent based on the weight of the electrolyte, and vinylene carbonate (VC) in an amount ranging from approximately 0.5 weight percent to approximately 2.0 weight percent based on the weight of the electrolyte.