Denka Company Limited

University of Yamanashi

Daiki Ikeda

Hiroshi Yokota

Takeshi Miyakawa

Makoto Uchida

Katsuyoshi Kakinuma

Tatsuya Nagai

Yusaku Harada

Tetsuya Ito

Shinichiro Osumi

An electrode catalyst support, capable of improving the power of a fuel cell, and an electrode catalyst and a solid polymer fuel cell using the same. Provided is carbon black wherein pores which are at most 6 nm in pore diameter have a cumulative pore volume of less than 0.25 cm/g, a specific surface area by BET is 500 to 900 m/g, and a volatile matter content is 1.0 to 10.0%. Also provided are an electrode catalyst for a fuel cell comprising a support which includes this carbon black, and a solid polymer fuel cell having the electrode catalyst.

Carbon black, electrode catalyst and fuel cell using same, and method for producing carbon black

An object of the present invention is to provide a carbon black for batteries having excellent dispersibility, electron conductivity and oxidation resistance. In addition, an object of the present invention is to provide a low-viscosity conductive composition for an electrode produced using the carbon black, and a low-resistance battery electrode and a battery having excellent high-output characteristics and cycle characteristics produced using the conductive composition. A carbon black for batteries having: BET specific surface area of 50 to 220 m/g; a crystallite diameter (La) of 30 to 42 &#x212b;; and a number of COdesorption molecules per unit surface area measured by a temperature-rising desorption gas analysis method (50&#xb0; C. to 1200&#xb0; C. of measurement temperature) of 8.0&#xd7;10to 15.0&#xd7;10molecules/mis excellent in dispersibility, electron conductivity and oxidation resistance. A conductive composition for a low-viscosity electrode produced using the carbon black, and a low-resistance battery electrode and a battery having excellent high-output characteristics and cycle characteristics produced using the conductive composition can be obtained.

Carbon black for batteries, conductive composition for electrodes, electrode for batteries, and battery

Growing community of inventors

Omuta, Japan

Daiki Ikeda