Nonaqueous organic electrolytes for low temperature...

Details Nonaqueous organic electrolytes for low temperature... Nonaqueous organic electrolytes for low temperature...

H - Electricity

01

M

H01M 10/26 (2006.01) H01M 4/02 (2006.01) H01M 4/58 (2006.01) H01M 4/60 (2006.01) H01M 4/62 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2334054

An alkali metal secondary electrochemical cell, and preferably a lithium ion cell, activated with an equilibrated quaternary solvent system, is described. The solvent system comprises a mixture of dialkyl carbonates and cyclic carbonates, and preferably a quaternary mixture of dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate and ethylene carbonate with dimethyl carbonate, diethyl carbonate and ethylmethyl carbonate in an equilibrated ratio. Lithium ion cells activated with this electrolyte have good room temperature cycling characteristics and excellent low temperature discharge behavior.

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