Asahi Glass Company, Limited

Ag Technology Co., Ltd.

Elna Co., Ltd.

Masaru Yoshitake

Naoki Yoshida

Shinji Terazono

Shinsuke Morikawa

Eiji Yanagisawa

Toyoaki Ishizaki

Shin Tatematsu

Eiji Endoh

Shunichi Samejima

Yasuhiro Kunisa

Hidekazu Okamoto

Takeshi Morimoto

Toshihiro Tanuma

Keiichi Ohnishi

Yutaka Segawa

Atsuyoshi Takenaka

Hidemi Yamada

Yoshiki Hamatani

Toshihiro Ohashi

Hiroshi Wakatsuki

Masuo Sugisaki

A polymer electrolyte fuel cell comprising a polymer electrolyte made of an ion exchange membrane, catalyst layers disposed on both sides thereof and current collectors disposed on the outer sides thereof, wherein a solvent-soluble fluorine-containing polymer (preferably a polymer having a fluorine-containing aliphatic ring structure) having substantially no ion exchange groups, is incorporated in the current collectors. By the above construction, the current collectors can have a high water repellency for a long period of time, and the polymer electrolyte fuel cell can operate at a high output density constantly over a long period of time.

Solid polymer type fuel cell and production method thereof

A polymer electrolyte fuel cell comprising a plurality of membrane electrode assemblies laminated via separators, each assembly comprising a membrane-form polymer electrolyte and a pair of a fuel electrode and an air electrode facing each other via the electrolyte, wherein as the separator, a separator made of a metal/non-metal composite material, is used which has a fuel gas channel, an oxidant channel and a fluid channel for cooling, and at least side walls of the fluid channel for cooling are made of metal and at least faces which are in contact with the membrane electrode assemblies are made of non-metal. The separators are excellent in the dimensional stability and air-tightness and light in weight, and the polymer electrolyte fuel cell having such separators can maintain a high performance constantly for a long time.

Solid polymer electrolyte fuel cell

An electrode for a polymer electrolyte fuel cell, which is a porous gas diffusion electrode comprising a catalyst powder and an ion exchange resin, wherein a solvent-soluble fluorine-containing polymer having substantially no ion exchange groups exists at least at a part of the inner surface of pores of the electrode.

Polymer electrolyte fuel cell, electrode for it and method for producing it

A polymer electrolyte fuel cell comprising a membrane-form solid polymer electrolyte, a fuel electrode disposed on one side of the polymer electrolyte, and an air electrode disposed on the other side of the polymer electrolyte, wherein each of the fuel electrode and the air electrode is made of a gas diffusion electrode having a catalyst covered with a fluorocarbon ion exchange resin, and the ion exchange capacity of the ion exchange resin of the fuel electrode is larger than the ion exchange capacity of the ion exchange resin of the air electrode.

Solid polymer electrolyte type fuel cell

A process for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane, which comprises isomerizing 1,1,2-trichloro-1,2,2-trifluoroethane to form 1,1,1-trichloro-2,2,2-trifluoroethane, followed by fluorination with hydrofluoric acid.

Process for producing 1,1-dichloro-12,2,2-tetrafluoroethane

A glass forming mold which comprises a substrate made of stainless steel and a coating comprising the following components formed as the outermost surface coating on the substrate: (1) from 40 to 94 wt % of nickel and/or cobalt as component A; (2) from 5 to 59 wt % of tungsten as component B; and (3) from 0.5 to 40 wt % of at least one transition element having a melting point of at least 2,200.degree. C. as component C.

Method for forming a glass product for a cathode ray tube

A process for producing a hydrogen-containing 2,2-difluoropropane of the following formula (2), which comprises subjecting a 2,2-difluoropropane of the following formula (1) to hydrogen reduction:

Process for producing a hydrogen-containing 2,2-difluoropropane

Method for producing a hydrogen-containing chloromethane

An electrolytic capacitor comprising a capacitor element and an electrolyte impregnated to the element, wherein the electrolyte comprises a reaction product of citraconic acid with trialkylamine dissolved in a solvent selected from the group consisting of lactones, glycols and mixtures thereof.

Electrolytic capacitor

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Yokohama, Japan

Masaru Yoshitake