Symmetrical solid oxide fuel cell electrode material and preparation method and application thereof

The invention relates to the technical field of batteries, in particular to a symmetric solid oxide fuel cell electrode material and a preparation method and application thereof. The chemical general formula of the electrode material is La1-xCaxCoTiO < 5 + delta >, wherein x is greater than or equal to 0 and less than or equal to 1. The preparation method comprises the following steps: adding concentrated HNO3 into deionized water, adding a lanthanum source, a calcium source, a cobalt source and a titanium source according to the stoichiometric ratio of each element in the chemical general formula La1-xCaxCoTiO < 5 + delta >, and then adding (CH2OH) 2 and C6H8O7. H2O to obtain a mixed solution; heating and stirring the mixed solution, and then drying and grinding to obtain powder; and calcining the powder, grinding and sintering to obtain the electrode material. The preparation method has the advantages of simple process, low cost, easily available raw materials and the like; the electrode material has rich a