Hydrogen production and member for hydrogen production

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A member for hydrogen production includes a ceramic composite 5 in which a plurality of ceramic particles 1 having an average particle diameter of 5 nm to 200 nm are dispersed in a porous insulator 3 having a different component from the ceramic particles 1, in which the ceramic particles 1 comprise at least one substance selected from the group consisting of AXO 3±´ (where 0 ‰¤ ´ ‰¤ 1, A : at least one of rare earth elements, alkaline earth elements, and alkali metal elements, X : at least one of transition metal elements and metalloid elements, and O : oxygen), cerium oxide, and zirconium oxide as a main component.