In search of widening the electrochemical window of solid electrolytes for Li-batteries: the La0.29Li0.12+xM1−xZrxO3 (M = Nb, Ta) perovskite-type systems

La 0.29 Li 0.12+ x M 1− x Zr x O 3 (M = Nb, Ta) perovskites present remarkable properties as potential solid electrolytes. Nb oxides present a higher conductivity while Ta induces the widest electrochemical window.