Effect of Sintering Process on Ionic Conductivity of Li 7-x La 3 Zr 2-x Nb x O 12 (x = 0, 0.2, 0.4, 0.6) Solid Electrolytes. - Ni, Lei; Wu, Zhigang; Zhang, Chuyi; Nóvoa, X. Ramón (Materials (1996-1944), 2021)