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

Qidong Li; Qiulong Wei; Jinzhi Sheng; Mengyu Yan; Liang Zhou; Wen Luo; Ruimin Sun; Liqiang Mai

doi:10.1002/advs.201500284

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

Adv Sci (Weinh). 2015 Oct 1;2(12):1500284. doi: 10.1002/advs.201500284. eCollection 2015 Dec.

Authors

Qidong Li¹, Qiulong Wei¹, Jinzhi Sheng¹, Mengyu Yan¹, Liang Zhou¹, Wen Luo¹, Ruimin Sun¹, Liqiang Mai¹

Affiliation

¹ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China.

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.

Keywords: Li3VO4; anode; in situ XRD; lithium‐ion battery; mesoporous.