Air electrode material for high temperature electrochemical cells

Abstract From the Canadian patent

9 51,747, ABSTRACT OF THE DISCLOSURE, Disclosed is a solid solution with a perovskitelike crystal structure having the general formula La1-x-w(ML)X(Ce)w(MS1)1-y(Ms2)yO3, where ML is Ca Sr, Ba, or mixtures thereof, MS1 is Mn Cr, or mixtures thereof and MS2 is Ni, Fe Co, Ti, Al, In, Sn, Mg, Y, Nb, Ta, or mixtures thereof w is about 0.05 to, about 0.25, x+w is about 0.1 to about 0.7 and y is 0 to, about 0.5. In the formula ML is preferably Ca, w is, preferably 0.1 to 0.2 x+w is preferably 0.4 to 0.7, and y, is preferably 0. The solid solution can be used in an electrochemical cell where it more closely matches the thermal expansion characteristics of the support tube and electrolyte of the …