Proton conductive inorganic thin film, method of forming the same, and fuel cell including the proton conductive inorganic thin film

摘要

A proton-conductive inorganic thin film including an inorganic proton conductor, a method of forming the proton-conductive inorganic thin film, and a fuel cell including the proton-conductive inorganic thin film as an electrolyte membrane.

主权项

1. A fuel cell comprising the proton-conductive inorganic thin film comprising an inorganic proton conductor represented by Formula 1 below:
M11-aM2aPxOy,  Formula 1 wherein M1 is a tetravalent metallic element, M2 is at least one metallic element selected from the group consisting of a monovalent metallic element, a divalent metallic element, and a trivalent metallic element, 0≦a<1, x is a number from 1.5 to 3.5; and y is a number from 5 to 13, characterized in that conductive inorganic thin film is in an amorphous phase wherein a main peak at a Bragg angle of 2θ indicating a crystalline phase of SnP2O7 is not present for a CuK-α X-ray wavelength of 1.541 Å.