| abstract |
Provided is a material having high ionic conductivity that conducts protons or oxide ions and is excellent in moisture resistance and reduction resistance. The ionic conductor is represented by the general formula (1): BaZr a Ce b M 1 c L 1 d O 3-α (M 1 is selected from the group consisting of rare earth, In, Mn, Fe, Co, Ni, Al, and Ga) that at least one, L 1 is at least one selected from the group consisting of P, B and N, a, b, c, d-and α, 0 ≦ a <1.2,0 < b <1.2 And 0 <c <1.2, 0.9 <a + b + c <1.2, 0 <d <0.1 and 0 <α <3). |