Electrolyte membrane, electrode, and fuel cell
AssigneeKabushiki Kaisha Toshiba
InventorsJun Tamura, Yoshihiko Nakano, Hideo Oota
Life of this patent
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Abstract
A proton conductive inorganic material includes oxide particles containing at least one element X selected from the group consisting of W, Mo, Cr, B and V, an oxide carrier carrying the oxide particles and containing at least one element Y selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb.
Claims26
An electrolyte membrane which comprises a proton conductive inorganic material and a polymer material, and which has a solid super acidity in which an acidity function H0 of Hammett satisfies H0<−11.93,
- wherein the proton conductive inorganic material comprises:
- oxide particles comprising at least one element X selected from the group consisting of W, Mo, Cr, B and V;
- and
- an oxide carrier comprising at least one first element selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb,
- wherein the oxide particles are supported on the oxide carrier.
An electrode, comprising:
- a proton conductive inorganic material comprising:
- oxide particles comprising at least one element X selected from the group consisting of W, Mo, Cr, B and V, and an oxide carrier comprising at least one first element selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb, and wherein the proton conductive inorganic material has a solid super acidity in which an acidity function H0 of Hammett satisfies H0<−11.93;
- a polymer material;
- and
- a redox catalyst,
- wherein the oxide particles are supported on the oxide carrier.
A membrane electrode assembly comprising a fuel electrode, an oxidizing agent electrode, and an electrolyte membrane provided between the fuel electrode and the oxidizing agent electrode,
- wherein at least one of the fuel electrode, the oxidizing agent electrode, and the electrolyte membrane comprises a proton conductive inorganic material comprising oxide particles containing at least one element X selected from the group consisting of W, Mo, Cr, B and V, and an oxide carrier comprising at least one first element selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb, and the proton conductive inorganic material has a solid super acidity in which an acidity function H0 of Hammett satisfies H0<−11.93,
- wherein the oxide particles are supported on the oxide carrier.
A fuel cell comprising a fuel electrode, an oxidizing agent electrode, and an electrolyte membrane provided between the fuel electrode and the oxidizing agent electrode,
- wherein at least one of the fuel electrode, the oxidizing agent electrode, and the electrolyte membrane comprises a proton conductive inorganic material including oxide particles comprising at least one element X selected from the group consisting of W, Mo, Cr, B and V, and an oxide carrier comprising at least one first element selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb, and the proton conductive inorganic material has a solid super acidity in which an acidity function H0 of Hammett satisfies H0<−11.93,
- wherein the oxide particles are supported on the oxide carrier.
A proton conductive inorganic material, comprising:
- oxide particles comprising at least one element X selected from the group consisting of W, Mo, Cr, B and V;
- and
- an oxide carrier comprising at least one first element selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb, and the proton conductive inorganic material has a solid super acidity in which an acidity function H0 of Hammett satisfies H0<−11.93,
- wherein the oxide particles are supported on the oxide carrier.
Dependencies are inferred from the claim text.