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US 2006/0051657 A1Published application
Supported catalyst for fuel cell, method of manufacturing the same, and fuel cell
AssigneesCataler Corporation, Toyota Jidosha Kabushiki Kaisha
InventorsTomoaki Terada, Toshiharu Tabata, Hiroaki Takahashi
Life of this patent
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Abstract
Provided is a supported catalyst for a fuel cell, containing a conductive support and a platinum alloy supported thereby, wherein an elution ratio of transition metal other than platinum is 30% or less when 0.5 g of the supported catalyst is stirred at room temperature in 30 mL of 0.1N aqueous sulfuric acid solution for 800 hours.
Claims11
A supported catalyst for a fuel cell, comprising:
- a conductive support;
- and
- a platinum alloy supported by the conductive support,
- wherein an elution ratio of transition metal other than platinum is 30% or less when 0.5 g of the supported catalyst is stirred at room temperature in 30 mL of 0.1N aqueous sulfuric acid solution for 800 hours.
1 more element
A method of manufacturing a supported catalyst for a fuel cell, comprising:
- causing a particulate conductive support to support a platinum compound;
- applying a reducer to the platinum compound to metallize the platinum compound;
- after metallizing the platinum compound, causing the conductive support to further support a transition metal other than platinum by wet process under reducing condition;
- producing an alloy of the platinum and the transition metal other than platinum by heating the conductive support supporting the transition metal other than platinum to obtain a supported catalyst comprising the conductive support and the alloy supported thereby;
- and
- acid washing the supported catalyst to remove an unalloyed component of the transition metal other than platinum from the supported catalyst.
3 more elements
Dependencies are inferred from the claim text.