Enhanced ionic conductivity and improved electrochemical performance of hybrid Li0.33La0.56TiO3

Template-regulated Li 0.33 La 0.56 TiO 3 (LLTO) powders are synthesized using CTAB via a hydrothermal method. The hybird LLTO is obtained by mixing the template-regulated LLTO powders with Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) powders and non-templated LLTO powders. In the non-templated LLTO, small round grains develop, while large grains with a high aspect ratio tend to form in the template-regulated LLTO. The total conductivity of the hybrid LLTO increases, reaching 1.28×10 −4 S cm −1 . The presence of specific mesopores and the bridging effect among grains create an optimal balance between the mobility and density of lithium ions, therefore contributing to the increase of the conductivity. The hybrid LLTO demonstrates improved higher fracture toughness, indicating a greater cycling tolerance. It also exhibits superior initial capacity and a slower degradation rate. These results present a novel approach to prepare lithium-ion conductors with enhanced performance.