The Furukawa Electric Co., Ltd.

Circuit Foil Japan Co., Ltd.

Hitoshi Kato

Koichi Ashizawa

Toshio Horie

Tsukasa Akutsu

Process for preparing porous electrolytic metal foil

An oxygen generating electrode has a base material with at least a surface thereof made of titanium alone or a titanium alloy, a primary coating formed on the surface of the base material, and a catalyst layer formed on the primary coating and containing an oxide of platinum group element as a main component. The primary coating is composed of a titanium oxide coating and an oxide mixture layer, the titanium oxide coating being made of a titanium oxide only and including a first titanium oxide layer formed by electrolytically oxidizing the surface of the base material and a second titanium oxide layer formed on the first titanium oxide layer by a thermal decomposition method, the oxide mixture layer including at least one layer formed on the titanium oxide coating and consisting of a mixture containing an oxide of an element belonging to a group other than the platinum group, as a main component, and an oxide of a platinum group element.

Method of producing an oxygen generating electrode

There is provided a metal foil manufacturing method, in which a metal foil is manufactured by forming a thin metal layer by electrodepositing a metal on the surface of a cathode through an electrolytic reaction, and then separating the thin metal layer from the cathode surface. In doing this, an anodized film forming apparatus is mounted on an exposed surface of the cathode exposed after the separation of the metal layer, and is operated to subject the exposed surface of the cathode continuously or intermittently to electrolytic oxidation, thereby forming an anodized film on the exposed surface. The apparatus comprises electrolytic agent retaining means for retaining an electrolytic agent for anodization in contact with the exposed surface of the cathode, an electrode located in the electrolytic agent in the retaining means and supplied with an electrolytic current at a potential lower than the operating potential of the cathode, and electrolytic agent supply means for supplying the electrolytic agent to the electrolytic agent retaining means.

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Utsunomiya, Japan

Hitoshi Kato