Proton conducting membrane using a solid acid
AssigneeCalifornia Institute of Technology
InventorsCalum Chisholm, Sekharipuram R. Narayanan, Dane Boysen, Sossina M. Haile
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Abstract
A solid acid material is used as a proton conducting membrane in an electrochemical device. The solid acid material can be one of a plurality of different kinds of materials. A binder can be added, and that binder can be either a nonconducting or a conducting binder. Nonconducting binders can be, for example, a polymer or a glass. A conducting binder enables the device to be both proton conducting and electron conducting. The solid acid material has the general form MaHb(XOt)c.
Claims11
A proton conducting membrane, formed of a solid acid material which is of a type that transports H+ ions in a solid phase, said membrane having a structure that can be used in an aqueous environment, wherein said solid acid is Cs2Na(HSO4)3.
A proton conducting membrane, formed of a solid acid material which is of a type that transports H+ ions in a solid phase, said membrane having a structure that can be used in an aqueous environment, wherein said solid acid is CaNaHSiO4.
A proton conducting membrane comprising:
- a solid acid material which includes the chemical form MaHb(XOt)c, where a, b, c and t are non-zero integers and the structure has XOt groups linked together by hydrogen bonds;
- and
- a strucural binder with said solid acid material wherein said structural binder is electrically conducting.
A proton conducting membrane, comprising:
- a solid acid material which includes the chemical form CsaHb(SiOt)c, where a, b, c and t are non-zero integers and the structure has SiOt groups linked together by hydrogen bonds;
- and
- a structural binder for said solid acid material, forming a membrane with said solid acid material.
A proton conducting membrane, comprising:
- a solid acid material which includes the chemical form MaHb (XOt)c, where a, b, c and t are non-zero integers and the structure has XOt groups linked together by hydrogen bonds;
- and
- a structural binder for said solid acid material, forming a membrane with said solid acid material
- wherein said solid acid is of the general formula MaHb (XOt)c, where;
- the X material is from the group consisting of Si, P, S, As, Se, or Te
- wherein M is Cs, and wherein said solid acid material is water insoluble.
A proton conducting membrane, comprising;
- a solid acid silicate which is one of CaNaHSiO4, Cs3HSiO4 or (NH4)3HSiO4.
Dependencies are inferred from the claim text.