Patent ID: 7004983

Claim:
A method of making an electrolytic capacitor comprising: making a capacitor precursory body comprising an anode foil, a cathode foil and a separator sandwiched between said anode and said cathode foils; impregnating said capacitor precursory body with a starting liquid of a polymer electrolyte composite to make a starting electrolytic capacitor element; and curing said starting liquid of said polymer electrolyte composite in said starting electrolytic capacitor element to form a copolymer of acrylic derivatives, wherein said starting liquid of polymer electrolyte composite comprises a mixture of: an electrolyte solution comprising a polar solvent and a solute comprising at least one of inorganic acids, organic acids or salts of both of said acids; a first monomer of at least one of a group of monofunctional monomers of acrylic derivatives each having at least one hydroxyl group at a terminal thereof and a polymerizable unsaturated double bond; and a second monomer of at least one of a group of multifunctional monomers of acrylic derivatives each having plural polymerizable unsaturated double bonds, wherein said solute is free of metal salts as cations.