Li 2 Zn 0.9 Al 0.1 Ti 3 O 8 /C as a High-Property Anode Material for Li-Ion Batteries

Herein, Li 2 Zn 1-x Al x Ti 3 O 8 /C ( x = 0, 0.05, 0.1, 0.15) materials were successfully synthesized using the sol–gel method. Li 2 ZnTi 3 O 8 /C materials are hindered by Ti 4+ during the electron migration process, resulting in poor electron conductivity. Moreover, a part of Zn 2+ in the tetrahedral position blocks Li + migration through the tetrahedron, resulting in low ionic conductivity, and will directly lead to the low electrochemical properties of Li 2 ZnTi 3 O 8 /C. The electrochemical properties of Li 2 ZnTi 3 O 8 /C can be improved by doping it with Al 3+ . The charge–discharge experiments show that Li 2 Zn 0.9 Al 0.1 Ti 3 O 8 /C possesses the optimal doping amount, and its maximum specific capacity can reach 320.6 at 200 mAh for 100 cycles, showing excellent cycle performance. Additionally, the discharge capacity of Li 2 Zn 0.9 Al 0.1 Ti 3 O 8 /C was 290.1 mA h g −1 at 200 mA g −1 and 229.7 mA h g −1 at 1000 mA g −1 . These results demonstrate that doping with Al 3+ can be a useful technique to make the electrochemical performance become better.