HYDROGEN-CONTAINING TRANSITION METAL OXIDE, PREPARATION METHOD THEREFOR, AND SOLID FUEL CELL

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A method for preparing a hydrogen-containing transition metal oxide. The method comprises the following steps : providing a transition metal oxide having a structural formula of ABOx, A being one or more of alkaline earth metal elements and rare earth metal elements, B being one or more of transition metal elements, x being greater than or equal to 2 and less than or equal to 3; providing a metal catalyst, and contacting the metal catalyst with the surface of the transition metal oxide; putting the transition metal oxide and the metal catalyst into a hydrogen-containing reaction gas; and hydrogen radicals being generated from the hydrogen-containing reaction gas under the action of the metal catalyst, and being diffused and inserted into the transition metal oxide, so as to obtain the hydrogen-containing transition metal oxide. A hydrogen-containing transition metal oxide material, a preparation method therefor, and a solid fuel cell using the hydrogen-containing transition metal oxide material as the electrolyte.