Matsushita Electric Industrial Co., Ltd.

Yasutaka Noguchi

Ryoji Tsuboi

Shuji Asano

Kazuhito Hatoh

Satoru Fujii

Yukihiro Okada

Nobuhiko Hojo

Kohji Yuasa

Satoshi Shibutani

Masato Hosaka

Aoi Tanaka

It is difficult to realize a small fuel cell capable of being installed in mobile device by merely downsizing a conventional fuel cell without changing the configuration. The present invention provides a small fuel cell employing a polymer electrolyte thin film, by using a semiconductor process. A polymer electrolyte thin film fuel cell in accordance with the present invention comprises: a substrate having a plurality of openings; an electrolyte membrane-electrode assembly formed on the substrate so as to cover each of the openings, the assembly comprising a first catalyst electrode layer, a hydrogen ion conductive polymer electrolyte membrane and a second catalyst electrode layer which are formed successively; and fuel and oxidant supply means for supplying a fuel or an oxidant gas to the first catalyst electrode layer through the openings, and an oxidant gas or a fuel to the second catalyst electrode layer.

Polymer electrolyte thin film fuel cell and method of operating the same

An alkaline storage battery configured with an improved nickel positive electrode plate having a high capacity density and a high utilization of the active material is disclosed. The nickel positive electrode plate comprises a porous metal plaque, a first layer of nickel hydroxide loaded in close proximity to inner surfaces of pores of the porous metal plaque, and a second layer of nickel hydroxide loaded over the first layer. The nickel hydroxide in the second layer has a larger particle diameter than that in the first layer, and the amount of the nickel hydroxide in the second layer occupies a majority of the total amount of the active material filled in the positive electrode.

Method for manufacturing positive electrode plates for an alkaline

Alkaline storage battery

Growing community of inventors

Kamakura, Japan

Yasutaka Noguchi