Cataler Corporation

Toyota Jidosha Kabushiki Kaisha

Yosuke Horiuchi

Akihiro Hori

Tomoaki Terada

Takahiro Nagata

Hiroaki Takahashi

Toshiharu Tabata

Susumu Enomoto

Tetsuo Nagami

Tetsuo Kawamura

Mikihiro Kataoka

Sozaburo Ohashi

Hideyasu Kawai

This anode catalyst layer for a fuel cell contains electrode catalyst particles, a carbon carrier on which the electrode catalyst particles are loaded, water electrolysis catalyst particles, a proton-conducting binder, and graphitized carbon. At least part of the carbon carrier has a crystallite size La of 3.0 nm or more.

Anode catalyst layer for fuel cell and fuel cell using same

This anode catalyst layer for a fuel cell contains electrode catalyst particles, a carbon carrier on which the electrode catalyst particles are loaded, water electrolysis catalyst particles, a proton-conducting binder, and graphitized carbon. The graphitized carbon has a bulk density of 0.50/cmor less.

An anode catalyst layer for a fuel cell includes: electrode catalyst particles; a carbon carrier carrying the electrode catalyst particles; water electrolysis catalyst particles; a proton-conductive binder; and a graphitized carbon, wherein the content of the graphitized carbon in the anode catalyst layer for a fuel cell is 3-70 mass % with respect to the total mass of the electrode catalyst particles, the carbon carrier, and the graphitized carbon.

An anode catalyst layer for a fuel cell according to the present invention includes: electrode catalyst particles; a carbon carrier carrying the electrode catalyst particles; water electrolysis catalyst particles; a proton-conductive binder; and a graphitized carbon, wherein the content of graphitized carbon in the anode catalyst layer for a fuel cell is 15-70 volume % with respect to the total volume of the electrode catalyst particles, the carbon carrier, and the graphitized carbon.

A method for producing an electrode catalyst for a fuel cell is provided. The electrode catalyst includes a carbon support and a catalyst supported on the carbon support. The catalyst is one of platinum and a platinum-alloy. The method includes supporting the catalyst on the carbon support; and treating the carbon support carrying the catalyst with a nitric acid and cleaning the treated carbon support, such that an amount of an acid present on the carbon support becomes in a range from 0.7 mmol to 1.31 mmol of the acid per gram of the electrode catalyst.

Electrode catalyst for fuel cell, method for producing the same, and polymer electrolyte fuel cell using the same

A conductive carbon carrier for a fuel cell having at least a surface layer graphitized, characterized in that the dimension (La) in a six-membered ring face (carbon plane) direction of a crystallite measured by X-ray diffraction is 4.5 nm or more. This carbon carrier improves the durability in a fuel cell and enables operation for a long period of time.

Conductive carbon carrier for fuel cell, electrode catalyst for fuel cell and solid polymer fuel cell comprising same

This invention relates to an electrode catalyst for a fuel cell comprising catalyst metal particles of noble metal-base metal-Ce (cerium) ternary alloy carried on carbon materials, wherein the noble metal is at least one member selected from among Pt, Ru, Rh, Pd, Ag and Au, the base metal is at least one member selected from among Ir, Co, Fe, Ni and Mn, and the relative proportion (i.e., the molar proportion) of noble metal:base metal:Ce (cerium) is 20 to 95:5 to 60:0.1 to 3. The electrode catalyst for a fuel cell inhibits deterioration of an electrolyte membrane or an electrolyte in an electrode catalyst layer, improves durability, and, in particular, improves the capacity for power generation in the high current density region.

Electrode catalyst for fuel cell, method for producing the same, and fuel cell using the electrode catalyst

An object of the present invention is to reduce the amount of catalytic metal such as Pt in a fuel cell. The present invention provides a fuel cell electrode catalyst comprising a conductive carrier and catalytic metal particles, wherein the CO adsorption amount of the electrode catalyst is at least 30mL/g&#xb7;Pt.

Growing community of inventors

Kakegawa, Japan

Yosuke Horiuchi