Ag Embedded Li₃VO₄ as Superior Anode for Li-Ion Batteries

Highly conductive Ag is proven effective to improve the electrochemical performance of Li 3 VO 4 . Ag@Li 3 VO 4 composite with unique architecture of Ag nanoparticles embedded homogeneously in Li 3 VO 4 matrix is prepared by a facile intermediate solution method. The Ag@Li 3 VO 4 delivers high initial discharge and charge capacities of 651 and 479 mAh g −1 at a specific current of 0.15 A g −1 , maintaining of 498 and 492 mAh g −1 after 150 cycles. Superior rate capability (364 mAh g −1 ) can be achieved at 1.5 A g −1 , with more than 5 times improvement compared the one without Ag decoration. Herein, conductive but inert Ag is found facilitating fast Li + ion storage of the Li 3 VO 4 owing to enhanced electronic conductivity, Li ion diffusion, and structure stability, distinctly improving cycle stability and rate performance.