Toyo Tanso Co., Ltd.

Nissan Motor Company Limited

Yoshio Shodai

Takahiro Morishita

Mizuho Anzai

Hiroyuki Tanaka

Noriyuki Tanaka

Atsushi Ohma

Tetsuya Mashio

Kazuki Arihara

Ken Akizuki

Takanori Kawano

Masashi Kodama

Takehiko Okui

Yoshihisa Furuya

Rie Tao

Nobutaka Manabe

A supported platinum catalyst having a high ratio of a diffraction peak intensity of a Pt (220) plane and having excellent oxidation resistance, obtained by a simple production method without using a polymer. The supported platinum catalyst includes a carbon support and platinum fine particles supported on the carbon support, the platinum fine particles being such that a ratio of a diffraction peak intensity of a (220) plane with respect to a total of diffraction peak intensities of a (111) plane, a (200) plane, and the (220) plane by X-ray diffraction is not less than 0.128.

Supported platinum catalyst, cathode for fuel cell, fuel cell, and method for producing supported platinum catalyst

A method of producing a porous carbon is provided that can change type of functional groups, amount of functional groups, or ratio of functional groups while inhibiting its pore structure from changing. A method of producing a porous carbon includes: a first step of carbonizing a material containing a carbon source and a template source, to prepare a carbonized product; and a second step of immersing the carbonized product into a template removing solution, to remove a template from the carbonized product, and the method is characterized by changing at least two or more of the following conditions: type of the material, ratio of the carbon source and the template source, size of the template, and type of the template removal solution, to thereby control type, amount, or ratio of functional groups that are present in the porous carbon.

Method of producing porous carbon, and electrode and catalyst carrier containing porous carbon produced by the method

Provided are a carbon powder which can provide a catalyst exhibiting high performance and a catalyst. A carbon powder for fuel cell comprising carbon as a main component, which has a ratio (B/A) of an area B of peak 1 to an area A of peak 0 of more than 0 and 0.15 or less, wherein the area A represents an area of peak 0 at a position of 2&#x3b8;=22.5&#xb0; to 25&#xb0; as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800&#xb0; C. for 1 hour in an inert atmosphere, and the area B represents an area of peak 1 at a position of 2&#x3b8;=26&#xb0; as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800&#xb0; C. for 1 hour in an inert atmosphere.

Carbon powder for fuel cell and catalyst, electrode catalyst layer, membrane electrode assembly, and fuel cell using the carbon powder for fuel cell

The fluorine gas generation device includes an electrolyzer. An electrolytic bath is formed in the electrolyzer. A cathode is disposed in a cathode chamber, and an anode is disposed in an anode chamber. As a voltage is applied across the cathode and the anode, electrolysis of HF (hydrogen fluoride) takes place. In the electrolyzer, hydrogen gas is primarily generated from the cathode and fluorine gas is primarily generated from the anode. Two heating furnaces are provided for heating NaF pellets packed in HF adsorption columns. Each heating furnace has two HF adsorption columns disposed therein.

Gas generation device

A carbonaceous substrate of the present invention is such that an X-ray diffraction pattern thereof is a complex profile and includes at least two (002) diffraction lines; and the substrates contains crystallites with different interlayer spacings. Further, in the X-ray diffraction pattern, (002) diffraction lines between 2&#x3b8;=10&#xb0; and 2&#x3b8;=30&#xb0; have an asymmetric shape; and the X-ray diffraction pattern includes at least two pattern components which are a diffraction line whose center is at 2&#x3b8;=26&#xb0; and a diffraction line whose center is at a lower angle than 2&#x3b8;=26&#xb0;. Further, the carbonaceous substrate contains crystals wherein the periodic distance dis 0.34 nm or more and the crystallite size Lcis 20 nm or less based on the X-ray diffraction lines. An electrodes for fluorine electrolysis of the present invention includes the carbonaceous substrate on which a conductive diamond thin film is formed.

Carbonaceous substrate and electrode for fluorine-producing electrolysis

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Osaka, Japan

Yoshio Shodai