Физико-химические и электрохимические свойства модифицированного манганита лантана

Abstract

Electric and thermophysical properties of La0,8Sr0,2MnO3 compounds with additions of 1, 5, 10 and 20 % of Zr0,88Y0,12O1,96 solid electrolyte (Zi2Y ) have been studied in temperature range 300—1100 K. Formation of La2Zr2O7 and cubic ZrO2 was established for compositions with more than 5 % of Z12Y maitenance. Manganites conductivity decreasing with increasing of Z12Y contents from 50 to 90 % was established, but the thermal expansion coefficient is not affected (-10-5 K -1 ). The electrode behaviour has been studied on the border electrode/solid electrolyte by electrode composition and thickness, temperature and oxygen partial pressure conditions changing