| abstract |
A mixed ionic conductor with an ion conductive oxide has a perovskite structure of the formula Ba a (Ce 1-b M 1 b )L c O 3-α , wherein n M 1 is at least one trivalent rare earth element other than Ce; L is at least one element selected from the group consisting of Zr, Ti, V, Nb, Cr, Mo, W, Fe, Co, Ni, Cu, Ag, Au, Pd, Pt, Bi, Sb, Sn, Pb and Ga; n nwith n n0.9≦a≦1; n n0.16≦b≦0.26; n n0.01≦c≦0.1; n nand n n(2+ b −2 a )/2≦α<1.5. nSuch a mixed ionic conductor has not only the necessary conductivity for electrochemical devices such as fuel cells, but also superior moisture resistance. |