Asahi Glass Company, Limited

Takamichi Ishikawa

Manabu Suhara

Satoru Kuroki

Sadao Kanetoku

Takeshi Kawasato

Kazuya Hiratsuka

Naoki Yoshida

Katsuji Ikeda

Yoshiaki Higuchi

Masumi Nomura

Naruaki Tomita

Yasuo Shinozaki

Yasuyuki Takimoto

Hiroaki Ito

Tsuneji Ishii

Masaaki Ikemura

Tadao Chiba

Masuho Takeuchi

An electric double layer capacitor including a positive electrode assembly and a negative electrode assembly, each electrode assembly having a porous layer including a carbonaceous powder and a fluorine-containing polymer formed on at least one side of an aluminum foil current collector, the positive electrode and the negative electrode being disposed so that the porous layer of the positive electrode assembly and the porous layer of the negative electrode assembly face each other with a separator interposed therebetween to form an element, the element being impregnated with a non-aqueous electrolyte and accommodated in a sealed container, wherein the thickness of the porous layer is from 80 to 200 &mgr;m, the thickness of the aluminum foil current collector is from 20 to 80 &mgr;m, the thickness of the separator is from 30 to 170 &mgr;m, and the density of the porous layer is from 0.50 to 0.80 g/cm , wherein the capacitor has such a structure that a plurality of the positive electrode assemblies and the negative electrode assemblies are alternately laminated with a separator interposed therebetween, or strip positive electrode assemblies and negative electrode assemblies are wound with a separator interposed therebetween.

Electric double layer capacitor

Process for producing an electrode assembly for an electronic double layer capacitor

A polytetrafluoroethylene agglomerated product obtained from a polytetrafluoroethylene powder and a coke powder, wherein the polytetrafluoroethylene powder contains at least 8.3 mass % of a polytetrafluoroethylene fine powder having a particle diameter of from 0.1 to 9.5 &mgr;m, and the mass ratio of the polytetrafluoroethylene powder/the coke powder is 95-60/5-40.

Polytetrafluoroethylene agglomerated product and its molded product

A process for producing an electrode for an electric double layer capacitor, which includes extruding a mixture including a carbonaceous material, a polytetrafluoroethylene and a processing aid by paste extrusion, and rolling the obtained extruded product by rolling rolls to form it into a sheet shape.

Electrode for an electric double layer capacitor and process for producing it

A process for producing an electrode for an electric double layer capacitor, which comprises extruding a mixture comprising a carbonaceous material, a polytetrafluoroethylene and a processing aid by paste extrusion, and rolling the obtained extruded product by rolling rolls to form it into a sheet shape.

Process for producing an electric double layer capacitor electrode

An electric double layer capacitor including a positive electrode assembly and a negative electrode assembly, each electrode assembly having a porous layer including a carbonaceous powder and a fluorine-containing polymer formed on at least one side of an aluminum foil current collector, the positive electrode and the negative electrode being disposed so that the porous layer of the positive electrode assembly and the porous layer of the negative electrode assembly face each other with a separator interposed therebetween to form an element, the element being impregnated with a non-aqueous electrolyte and accommodated in a sealed container, wherein the thickness of the porous layer is from 80 to 200 &mgr;m, the thickness of the aluminum foil current collector is from 20 to 80 &mgr;m, the thickness of the separator is from 30 to 170 &mgr;m, and the density of the porous layer is from 0.50 to 0.80 g/cm .

Electric double layer capacitor and electrode therefor

A process for producing an electrode for an electric double layer capacitor, which comprises extruding a mixture comprising a carbonaceous material, a polytetrafluoroethylene and a processing aid by screw extrusion, and rolling the obtained extruded product by rolling rolls to form it into a sheet shape.

A method for molding a filler-containing polytetrafluoroethylene, which comprises adding a surfactant-containing aqueous medium to a filler-containing polytetrafluoroethylene, followed by extrusion molding.

Method for molding a filler-containing polytetrafluoroethylene

An ion exchange membrane electrolytic cell comprises an anode, a cathode, an anode compartment and a cathode compartment partitioned by an ion exchange membrane; an improvement characterized in that a gas and liquid permeable porous non-electrode layer is bonded to at least one of surfaces of said ion exchange membrane and said porous non-electrode layer is formed by coating electric non-conductive or conductive particles on the surface of a support to form a thin layer, transferring said thin layer onto the surface of said membrane and bonding said thin layer to said membrane by the application of heat and pressure.

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Kawasaki, Japan

Takamichi Ishikawa