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Journal of the Electrochemical Society, Vol.166, No.3, A5295-A5300, 2019
Ag Embedded Li3VO4 as Superior Anode for Li-Ion Batteries
Highly conductive Ag is proven effective to improve the electrochemical performance of Li3VO4. Ag@Li3VO4 composite with unique architecture of Ag nanoparticles embedded homogeneously in Li3VO4 matrix is prepared by a facile intermediate solution method. The Ag@Li3VO4 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 Li3VO4 owing to enhanced electronic conductivity, Li ion diffusion, and structure stability, distinctly improving cycle stability and rate performance. (C) The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License.