| abstract |
(57) [Summary] [Issue] Ion transport number is 0.5 over a wide temperature range. Showing the desired electron-oxide ion mixed conductivity before and after, An oxide ion mixed conductor having extremely high electric conductivity and a small change in temperature and having unprecedented excellent performance is realized. A general formula: A 1-x Ca x Ga 1-y B y O perovskite type oxide having a composition represented by 3 ion mixed conductor (wherein, A = Nd, Pr, Sm ; B = Co , Fe, Ni, Cu; x = 0.05-0.3, y = 0.05-0.3). |