Gel electrolyte, process for producing the same, and use thereof

A non-aqueous electrolytic capacitor comprising a gel electrolyte comprising a gel composition which comprises an electrolyte salt, a solvent for the electrolyte salt, and a polymer matrix, wherein the polymer matrix comprises a crosslinked polymer prepared by polymerizing a bifunctional (meth)acrylate represented by the following formula (I):

• wherein R represents a divalent organic group, and R1 represents a hydrogen atom or a methyl group as an electrolyte.

A process for producing a gel electrolyte, which comprises heating or irradiating with actinic radiations a solution containing an electrolyte salt, a solvent for the electrolyte salt, and a bifunctional (meth)acrylate represented by the following formula (I):

• wherein R represents a divalent organic group, and R1 represents a hydrogen atom or a methyl group,
• to polymerize the bifunctional (meth)acrylate, thereby forming a crosslinked polymer and forming a gel in which the electrolyte salt and the solvent are held in a matrix comprising the crosslinked polymer.

A process of producing a film-like gel electrolyte, which comprises heating or irradiating with actinic radiations a solution containing an electrolyte salt, a solvent for the electrolyte salt, and a bifunctional (meth)acrylate represented by the following formula

• wherein R represents a divalent organic group, and R1 represents a hydrogen atom or a methyl group,
• in a substrate porous film, to polymerize the bifunctional (meth)acrylate, thereby forming a crosslinked polymer and forming a gel in which the electrolyte salt and the solvent are held in a matrix comprising the crosslinked polymer.