Study on electrochemical properties of doped LaNiO_3 perovskite bifunctional oxygen electrodes

A series of LaNi1-yCoyO3(y=0.0-1.0) perovskite catalysts used as the catalysts of bifunctional oxygen electrodes were prepared by solgel method. The samples were characterized by XRD. Their electrocatalytic activity at oxygen electrodes were investigated by steady polarization curves and cyclic voltammetry method. The results show that the electrocatalystic properties of LaNiO3 is improved by doping the B ions and the LaNi0.8Co0.2O3 used as electrocatalyst of bifunctional oxygen electrode has excellent catalytic activity and stability on both oxygen reduction reaction and oxygen evolution reactions.