The structure and performance of SmSr_(1-x)Ae_xCo_2O_6(x=0,0.2,0.4,0.6,0.8,1;Ae=Ca,Ba) as intermediate temperature-solid oxide fuel cell (IT-SOFC) cathodes were investigated by X-ray diffraction (XRD), thermogravimetry (TG), thermal expansion, electrical conductivity, and electrochemical impedance spectroscopy (EIS). The SmSr_(1-x)Ae_xCo_2O_6 system's structure changes as x increases from 0 to 1. The SmSr_(0.8)Ae_(0.2)Co_2O_6 (SSAC; Ae=Ca, Sr, Ba) system has an orthorhombic structure with a Pnma space group. The crystal parameter of SSAC increases in the following order: Sr< Ca展开▼
