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AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKunihiro Nobuhara, Hideaki Kasai, Hiroshi Nakanishi, Wilson Agerico Tan Dino
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A method for accurately evaluating the performance of fuel-cell electrode catalysts, a method of search for fuel-cell electrode catalysts having excellent performance, and fuel-cell electrode catalysts having new and excellent catalytic activity searched for by the above method. In a method for evaluating the performance of fuel-cell electrode catalysts composed of conductive carriers on which catalytic metal is supported, the oxygen atom adsorption energy on the catalytic metal surface obtained through a molecular simulation analysis is used as an indicator of the performance evaluation. Suitable catalysts consist of Pt—Au or Pt—Au—B, wherein B is one or more metal chosen from the group of chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), rhodium (Rh) and palladium (Pd) and wherein the content of Au is 6 atom % or less.
A method of evaluating the performance of a fuel-cell electrode catalyst comprising a conductive carrier on which catalytic metal is supported, wherein oxygen atom adsorption energy on the catalytic metal surface obtained through a molecular simulation analysis is used as an indicator of the performance evaluation.
A method of search for a fuel-cell electrode catalyst comprising a conductive carrier on which catalytic metal is supported, wherein oxygen atom adsorption energy on the catalytic metal surface obtained through a molecular simulation analysis is used as an indicator of the search.
A fuel-cell electrode catalyst comprising a conductive carrier on which catalytic metal is supported, wherein the catalyst contains such catalytic metal having an oxygen atom adsorption energy of 0.20 to 0.85 eV on the catalytic metal surface obtained through a molecular simulation analysis.
A fuel-cell electrode catalyst comprising a conductive carrier on which catalytic metal is supported, wherein the catalyst contains such catalytic metal having an oxygen atom adsorption energy of 0.30 to 0.60 eV on the catalytic metal surface obtained through a molecular simulation analysis.
A fuel-cell electrode catalyst comprising carbon on which an alloy containing platinum and gold is supported, wherein the catalyst contains such catalytic metal expressed by Pt—Au or Pt—B—Au (B refers to a transition metal).
Dependencies are inferred from the claim text.