Stella Chemifa Corporation

Otsuka Chemical Co., Ltd.

Other

Stella Chemifa Kabushiki Kaisha

Ishida, Masayoshi

Yasutaka Tashiro

Tetsuo Nishida

Kazutaka Hirano

Akihiro Nabeshima

Shinji Hashiguchi

Hiroaki Tokuda

Kenji Sato

Masashi Yamamoto

Megumi Tomisaki

Takashi Higono

Hirohisa Kikuyama

Masahide Waki

Masayoshi Ishida

Kazuyuki Tohji

Akinori Oka

Yoshinobu Abe

Kenji Aoki

Hitoshi Tsurumaru

Megumi Tornisaki

Yoshinori Satoh

A quaternary ammonium salt of the formula (1), a composition containing the quaternary ammonium salt and an organic solvent, and an electrochemical device using the salt wherein Rand Rare both methyl and Xis BFor N(CFSO).

Quaternary ammonium salt and composition, and electrochemical device

The invention aims at providing a platinum black material, without using an expensive and rare material, which is excellent in CO poisoning inhibiting effect, HS poisoning inhibiting effect, SOpoisoning inhibiting effect and HCHO poisoning inhibiting effect, and a method for fluorinating platinum black. The platinum black material is characterized by fluorine adsorbed on its surface. The method for fluorinating platinum black is characterized by allowing platinum black to stand in a mixed gas atmosphere of n inert gas and fluorine in a low-pressure chamber to make fluorine adsorbed on the surface of the platinum black.

Catalyst comprising platinum black and fluorine

Fuel cell

A quaternary ammonium salt of the formula (1) wherein Ris straight-chain or branched alkyl having 1 to 4 carbon atoms, Ris straight-chain or branched alkyl having 1 to 3 carbon atoms, and Xis CFCO, CFSOBF, ClBF, AlF&#x2014;, CFBF, CFBF&#x2014;, N(SOF), PF, AsF&#x2014; or SbF.

Quaternary ammonium salt, electrolyte, electrolyte, solution and electrochemical device

A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein Ris straight-chain or branched alkyl having 1 to 4 carbon atoms, Ris methyl or ethyl, and Xis a fluorine-containing anion.

Quaternary ammonium salt, electrolyte, and electrochemical device

A carbon nanotube aggregate and a method for forming a carbon nanotube aggregate are provided. The carbon nanotube aggregate can be formed by treating carbon nanotubes with fluorine gas and sintering the resulting fluorinated carbon nanotubes. A carbon nanotube aggregate can be formed which does not contain a binder or resin matrix.

Method for forming a carbon nanotube aggregate

Provided is a method for purifying a quaternary alkyl ammonium salt enabling the obtainment of a particulate quaternary alkyl ammonium salt having a low water content at a high yield which is suitably used as an electrolyte in an electrolytic solution. The method for the purification of a quaternary alkyl ammonium salt comprises dispersing a quaternary alkyl ammonium salt to be purified into an organic solvent to allow it to form a suspension there. The alkyl groups constituting the quaternary alkyl ammonium salt have 1 to 5 carbon atoms each. The quaternary alkyl ammonium salt to be purified is dispersed into the organic solvent to make a suspension, and then the particles are washed with an alcohol solvent.

Method of purifying quaternary alkyl ammonium salt and quaternary alkyl ammonium salt

Growing community of inventors

Izumiotsu, Japan

Yasutaka Tashiro