Kabushiki Kaisha Toshiba

Toshiba Materials Co., Ltd.

Murata Manufacturing Co., Ltd.

Hideyuki Oozu

Yoshihiko Nakano

Nobuyasu Negishi

Yukinori Akamoto

Kenichi Takahashi

Seiichi Suenaga

Yasuhiro Goto

Maki Yonetsu

Hiroyuki Hasebe

Norihiro Tomimatsu

Akito Sasaki

Shinichi Onodera

Koichi Kawamura

Hirofumi Kan

Yuuichi Sato

Takashi Shimoyamada

Yuichi Yoshida

Genta Oomichi

Hiroshi Iwai

Daisuke Watanabe

Kazuhiro Yasuda

Tomomichi Naka

Yoko Tokuno

Kuniyuki Kakushima

Asako Sato

Hidenori Suzuki

Yoshinori Kataoka

Hideaki Yasui

Miho Nakamura

Kiyoshi Senoue

Wei Li

Yoshie Ozeki

The present invention provides an electrode material comprising at least one of metal compound powder and carbon powder, the powder having an average particle size of 50 &#x3bc;m or less and an activation energy Eof 0.05 eV or less. Further, the powder preferably has hopping conduction characteristics at room temperature of 25&#xb0; C. Furthermore, the powder preferably has an amount of oxygen defects of 1&#xd7;10cmor more. Still further, the powder preferably has a carrier density of 1&#xd7;10cmor more. Due to above structure, there can be provided an electrode material having a high storage capacity and a high charge/discharge efficiency.

Electrode material, and electrode layer, battery, and electrochromic device using the electrode material

According to one embodiment, a substrate includes a semiconductor layer. The semiconductor layer comprises tungsten oxide particles having a first peak in a range of 268 to 274 cm, a second peak in a range of 630 to 720 cm, and a third peak in a range of 800 to 810 cmin Raman spectroscopic analysis. The semiconductor layer has a thickness of 1 &#x3bc;m or more. The semiconductor layer has a porosity of 20 to 80 vol %.

Substrate and secondary battery

A fuel cell () includes an electromotive unit () having a membrane electrode assembly (MEA) (), a fuel storage unit () storing a liquid fuel, and a fuel supply mechanism () supplying the fuel from the fuel storage unit () to a fuel electrode () of the membrane electrode assembly (). The membrane electrode assembly () has a gas vent hole () provided in a manner to penetrate through at least an electrolyte membrane () to let a gas component generated on a side of the fuel electrode () escape to a side of an air electrode ().

Fuel cell

A fuel cartridge includes a container having an outlet port section, and a liquid fuel provided in the container. The liquid fuel contains a cationic impurity excluding H. The concentration of the cationic impurity falls within a range of 1&#xd7;10to 6&#xd7;10equivalent/L at the outlet port section.

Liquid fuel, fuel cartridge and fuel cell

The carbon fibers of this invention is characterized in that irreducible inorganic material particles in a mean primary particle size below 500 nm and reducible inorganic material particles in a mean primary particle size below 500 nm were mixed by pulverizing and then, the mixture was heat treated under the reducing atmosphere and metal particles in a mean particle size below 1 &#x3bc;m were obtained, and the mixed powder of the thus obtained metal particles with the irreducible inorganic material particles are included in the carbon fibers.

Electrode catalyst material comprising carbon nano-fibers having catalyst particles on the surface and in the insides of the interior area and a fuel cell having the electrode catalyst material

The present invention relates to a fuel cell including: a membrane electrode assembly () having a fuel electrode (), an air electrode (), and an electrolyte membrane () sandwiched therebetween; and a fuel storage unit () storing a liquid fuel. The fuel cell is capable of continuously generating electricity for long hours only by being replenished with a fuel, and therefore, attempts have been made to miniaturize the fuel cell to use it as a power source of portable electronic devices. When the membrane electrode assembly and the fuel storage unit in the fuel cell are connected via a flow path, a fuel supply state becomes uneven depending on the shape and the like of the flow path even though a supply amount of the fuel can be adjusted, which causes a problem such as a decrease in an output of the fuel cell. The present invention solves the aforethe problem by providing, in the fuel cell, a fuel distributing mechanism () which supplies the fuel to a plurality of places of the fuel electrode, and connecting the fuel distributing mechanism and the fuel storage unit via the flow path ().

In electronic equipment using a fuel cell as a power source, an antenna and a fuel cell, which are provided in a lower case of a main body receiving electronic parts, are arranged at a given distance from each other. An acceptable communication state can be established in the electronic equipment.

Electronic equipment

Carbon fiber synthesizing catalyst and method of making thereof

Growing community of inventors

Yokohama, Japan

Hideyuki Oozu