Pregel compositions for polymer gel electrolytes, method of...

Details Pregel compositions for polymer gel electrolytes, method of... Pregel compositions for polymer gel electrolytes, method of...

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) H01G 9/02 (2006.01) H01M 6/18 (2006.01) H01M 6/22 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2374838

A pregel composition is added to an organic electrolyte solution of an electrolyte salt in a nonaqueous solvent for causing the solution to gel and form a polymer gel electrolyte. The pregel composition is dehydrated by azeotropic distillation and has a moisture content of not more than 1,000 ppm as determined by Karl Fischer titration. Polymer gel electrolytes prepared with such a pregel composition have a good electrochemical stability, and are thus highly suitable for use in secondary cells and electrical double-layer capacitors.

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