Alloy electrode catalyst and fuel cell using the same
AssigneeUniversity of Yamanashi
InventorsKatsuyoshi KAKINUMA, Makoto UCHIDA, Akihiro IIYAMA
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Abstract
To spread the use of catalysts for fuel cells, there is a demand to develop a catalyst that uses less Pt and has a high power generation efficiency. An electrode catalyst includes a support particle containing a metal oxide and a precious-metal alloy supported on the support particle. The support particle includes multiple branches, a hole between the branches, and a pore. The pore is surrounded by the branches and the hole. The precious-metal alloy includes a precious metal element and at least one or more transition elements.
Claims16
An electrode catalyst comprising:
- a support particle containing a metal oxide;
- and
- a precious-metal alloy supported on the support particle, wherein
- the support particle comprises:
- a plurality of branches;
- a hole between the branches;
- and
- a pore,
- the pore is surrounded by the branches and the hole, and the precious-metal alloy comprises:
- a precious metal element;
- and
- at least one or more transition elements.
An electrode catalyst comprising:
- a support particle;
- and
- a precious-metal alloy supported on the support particle, wherein
- the support particle comprises a metal oxide,
- the support particle comprises:
- a plurality of branches;
- a plurality of bifurcation points at which the branches are connected together;
- and
- a pore,
- the pore is surrounded by a plurality of holes surrounded by the bifurcation points, and
- the precious-metal alloy comprises at least platinum and cobalt.
An electrode catalyst comprising:
- a plurality of support particles containing a metal oxide;
- and
- a precious-metal alloy supported on the support particles, wherein
- the support particles comprises one or more branches, the electrode catalyst has a pore among the support particles, and
- the precious-metal alloy comprises:
- a precious metal element;
- and
- at least one or more transition elements.
Dependencies are inferred from the claim text.