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...

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Bibliographic Details
Main Authors: Kang, Tao, Ni, Shibing, Chen, Qichang, Li, Tao, Chao, Dongliang, Yang, Xuelin, Zhao, Jinbao
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2019
Subjects:
Online Access:https://hdl.handle.net/10356/85222
http://hdl.handle.net/10220/48380
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Institution: Nanyang Technological University
Language: English
Description
Summary: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.