Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Fuel cell with liquid electrolyte
Reexamination Certificate
2011-06-21
2011-06-21
Ruddock, Ula C (Department: 1729)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Fuel cell with liquid electrolyte
C429S499000, C429S500000, C429S501000
Reexamination Certificate
active
07964319
ABSTRACT:
An object of the present invention is to provide a fuel cell that operates in a temperature range of not lower than 100° C., and a method for manufacturing such a fuel cell.The fuel cell of the present invention has a proton conductive gel, an anode electrode, and a cathode electrode,the proton conductor being sandwiched between the anode electrode and the cathode electrode, in whichthe proton conductive gel is composed of SnO2, NH3, H2O, and H3PO4,and provided that the molar ratio represented by NH3/SnO2is X, and the molar ratio represented by P/Sn is Y,X is not less than 0.2 and not greater than 5, and Y is not less than 1.6 and not greater than 3.
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Hara, S., et al., “Proton-conducting properties of hydrated tin dioxide as an electrolyte for fuel cells as intermediate temperature”, Solid State Ionics, 2002, pp. 679-685, vol. 154-155, Elsevier Science B.V.
Körösi, L., et al., “Preparation and characterization of SnO2nanoparticles of enhanced thermal stability: The effect of phosphoric acid treatment on SnO2.nH2O”, Colloids and Surfaces A: Physiochem Eng. Aspects, 2005, pp. 147-154, vol. 268, Elsevier B.V.
Original Japanese version of Fuji Jihou, 2002, p. 285, vol. 75 No. 5.
Komori Tomoyuki
Ohtsuka Takashi
Omote Atsushi
Zenitani Yuji
Marks Jacob
McDermott Will & Emery LLP
Panasonic Corporation
Ruddock Ula C
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