Toyota Jidosha Kabushiki Kaisha

Toyota Motor Engineering & Manufacturing North America, Inc.

Toyota Motor Corporation

Audi Ag

Sandia Corporation

Cataler Corporation

The State University of New York

Sandia Corporation, Operator of Sandia National Laboratories

Tetsuo Kawamura

James E Miller

John A Shelnutt

Wen Li

Craig J Medforth

Hiroaki Takahashi

Yujiang Song

Yukiyoshi Ueno

Tomoaki Terada

Kazuo Kawahara

Takahiro Nagata

Toshiharu Tabata

Susumu Enomoto

Tochi Tudor Nwoga

Kenji Kato

John Muldoon

Takaaki Ito

Mareo Kimura

Belabbes Merzougui

Masahiko Takeuchi

Chuan-Jian Zhong

Lesia V Protsailo

Minhua Shao

Tetsuo Nagami

Tatsuji Mizuno

Jin Luo

Shinji Tsuji

Yosuke Horiuchi

Yoshitsugu Ogura

Sozaburo Ohashi

Michael A Hickner

Yousuke Horiuchi

Hideyasu Kawai

Peter N Njoki

Rameshwori Loukrakpam

Brigid Wanjala

The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in proton exchange membrane fuel cells (PEM-FCs).

Photocatalytic methods for preparation of electrocatalyst materials

A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m/g.

Supported catalyst

A fuel cell supported catalyst includes an underlying support structure having at least one of a metal oxide and a metal phosphate. Catalyst particles are arranged onto and in engagement with the support structure. An intermediate conductive, corrosion-resistant layer, such as boron-doped-diamond, is arranged onto and in engagement with the support structure to surround the catalyst particles. The supported catalyst is produced by depositing the intermediate layer onto the support structure after the catalyst particles have been deposited on the underlying support structure, in one example. In another example, voids are provided in the intermediate layer, which has been deposited onto the underlying support structure, to subsequently receive the catalyst particles.

Fuel cell catalyst with metal oxide/phosphate support structure and method of manufacturing same

The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in polymer electrolyte membrane fuel cells (PEM-FCs).

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

To provide a production process of an electrode catalyst for fuel cell whose initial voltage is high and whose endurance characteristics, especially, whose voltage drop being caused by high-potential application is less. A production process according to the present invention of an electrode catalyst for fuel cell is characterized in that: it includes: a dispersing step of dispersing a conductive support in a solution; a loading step of dropping a platinum-salt solution, a base-metal-salt solution and an iridium-salt solution to the resulting dispersion liquid, thereby loading respective metallic salts on the conductive support as hydroxides under an alkaline condition; and an alloying step of heating the conductive support with metallic hydroxides loaded in a reducing atmosphere to reduce them, thereby alloying them.

Production process of electrode catalyst for fuel cell

The present invention is a method of solidifying sulfur component being the cause of &ldquo;SOx poisoning&rdquo; by use of a sulfur solidifier. The solidifier includes a metal element having a function of oxidizing the sulfur component and a basic metal element. And the solidifier solidifies sulfur component before exhaust gas flows into an NOx-occluding reduction-type exhaust purifying catalyst located on an exhaust path. Since the foregoing sulfur solidifier includes the above metal element and the basic metal element, it can effectively solidify the sulfur component which are the cause of the SOx poisoning, and ensure improvement in purification performance.

Method of purifying exhaust gas from internal combustion engine

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Toyota, Japan

Tetsuo Kawamura