Li ion conduction of perovskite Li0.375Sr0.4375Ti0.25Ta0.75O3 and related compounds

Electrochemical and mechanical stability of LixLa0.557TiO3‐δ perovskite electrolyte at various voltages

“…However, the values for E and H of LLTO‐0.2 V are in the level between those of LLTO‐3.2 V and LLTO‐4.5 V. For the K IC of all samples yield values around 1 MPa∙m 1/2 , nevertheless the values exhibit a slight but completely contrary trend to that of the E and H results. The results indicate that the mechanical properties depend on the Li quantity . The Young's modulus of dense (relative density >99%) Li 0.33 La 0.57 TiO 3 is about 200 GPa, and yet decreases rapidly to 143 GPa at a relative density of 95.2%, indicating that the Young's modulus is very sensitive with the porosity.…”

“…In addition to electrochemical performances, the solid electrolytes should exhibit high mechanical stability to maintain structural integrity upon the dendrite formation of the Li metal in the anode. Due to the key importance, the mechanical properties of Li 3 x La 2/3‐ x V 1/3‐2 x TiO 3 electrolytes have recently received increasing attentions . However, the electrochemical and mechanical properties have been investigated mostly on as‐prepared samples .…”

“…Due to the key importance, the mechanical properties of Li 3 x La 2/3‐ x V 1/3‐2 x TiO 3 electrolytes have recently received increasing attentions . However, the electrochemical and mechanical properties have been investigated mostly on as‐prepared samples . Whereas, one side of the solid electrolyte is in contact with the cathode and the other side is in contact with the anode in a battery, suggesting that the solid electrolyte is working under a voltage gradient.…”

Recent Research on Strategies to Improve Ion Conduction in Alkali Metal‐Ion Batteries

“…The ionic conductivity can be improved by adjusting the ratio of the two phases in the Li 2 S‐P 2 S 5 glass ceramic, the highest ionic conductivity reaches 4.8×10 −3 S cm −1 after the doping of MoS 2 . The ionic conductivity of the Perovskite structure itself is only about 10 −4 S cm −1 ,, but it could be greatly improved after compounding with other materials ,. Studies on solid polymer electrolytes have focused on complexing with metal oxide nanoparticles, LLZO, and various polymers .…”