Mesoporous Li3VO4/C Submicron‐Ellipsoids Supported on Reduced Graphene Oxide as Practical Anode for High‐Power Lithium‐Ion Batteries

Advanced Science

Qidong Li¹  Qiulong Wei¹  Jinzhi Sheng¹  Mengyu Yan¹  Liang Zhou¹  Wen Luo¹  Ruimin Sun¹ 

[1] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, P.R. China

关键词: anode;    in situ XRD;    Li3VO4;    lithium‐ion battery;    mesoporous;   

DOI  :  10.1002/advs.201500284

来源: Wiley

【 摘 要 】

Abstract

Despite the enormous efforts devoted to high-performance lithium-ion batteries (LIBs), the present state-of-the-art LIBs cannot meet the ever-increasing demands. With high theoretical capacity, fast ionic conductivity, and suitable charge/discharge plateaus, Li₃VO₄ shows great potential as the anode material for LIBs. However, it suffers from poor electronic conductivity. In this work, we present a novel composite material with mesoporous Li₃VO₄/C submicron-ellipsoids supported on rGO (LVO/C/rGO). The synthesized LVO/C/rGO exhibits a high reversible capacity (410 mAh g⁻¹ at 0.25 C), excellent rate capability (230 mAh g⁻¹ at 125 C), and outstanding long-cycle performance (82.5% capacity retention for 5000 cycles at 10 C). The impressive electrochemical performance reveals the great potential of the mesoporous LVO/C/rGO as a practical anode for high-power LIBs.

【 授权许可】

CC BY   
© 2015 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.