Overcharge protection for electrochemical cells

Details Overcharge protection for electrochemical cells Overcharge protection for electrochemical cells

H - Electricity

01

M

H01M 10/02 (2006.01) H01M 10/26 (2006.01)

Patent

CA 2560605

The invention relates to an improvement in a cell which is normally susceptible to damage from overcharging comprised of a negative electrode, a positive electrode, and an electrolyte comprised of an overcharge protection salt carried in a carrier or solvent. Representative overcharge protection salts are embraced by the formula: M a Q where M is an electrochemically stable cation selected from the group consisting of alkali metal, alkaline earth metal, tetraalkylammonium, or imidazolium groups, and Q is a borate or heteroborate cluster and a is the integer 1 or 2.

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