Dual perovskite structure, method of the same, metal air battery having the same, solid oxide fuel cell having the same, and solid oxide electrolyzer cell having the same

The present invention has a high electrical conductivity, there is provided a dual-perovskite structure, a high activity and high stability. Dual-perovskite structure, a first page lobe first structure comprising a skyline agent compound in accordance with one embodiment of the present invention; A; containing; and a second structure including a so as to cover at least a portion located on the outer side of the first structure, the first perovskite compound which is different from the second perovskite compound in the first structural member It includes.