Proton conductor and method of producing the same

Details Proton conductor and method of producing the same Proton conductor and method of producing the same

2007-06-05

2007-06-05

Cantelmo, Gregg (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C250S428000

Reexamination Certificate

active

10746789

ABSTRACT:
An alcohol solution of a metal alkoxide is mixed with a H3PO4mixture solution of water and alcohol to hydrolyze the metal alkoxide and effect crosslinking with H3PO4. Accordingly, a solid is produced composed of a composite oxide glass (proton conductor) containing constituent elements of P and a metal element originating from the metal alkoxide and having hydroxyl groups at terminals. The metal alkoxide is selected so that the metal alkoxide contains constituent elements of metal elements each of which is designated by a chemical shift within −25 ppm. The chemical shift is a difference between a value at which a peak of orthophosphoric acid appears when a silicon oxide-phosphate glass, which is a composite oxide of phosphorus oxide and silicon oxide, is analyzed by P31—MASNMR and a value at which a maximum peak appears when the composite oxide glass is analyzed by P31—MASNMR.

REFERENCES:
patent: 5682261 (1997-10-01), Takada et al.
patent: 8-249923 (1996-09-01), None
patent: 10-069817 (1998-03-01), None
patent: 11-203936 (1999-07-01), None
patent: 2003281933 (2003-10-01), None
C. Fernandez-Lorenzo et al., Sol-gel synthesis of SiO2—P2O5glasses, Journal of Non-Crystalline Solids, vol. 176, 1994, pp. 189-199.

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