Self-assembled sandwich-like vanadium oxide/graphene mesoporous composite as high-capacity anode material for lithium ion batteries

Authors

Xingchao Wang, Xinjiang University
Yudai Huang, Xi'an Jiaotong University, Xinjiang University
Dianzeng Jia, Institute of Applied Chemistry China, Xinjiang University, Key Laboratory of Advanced Functional Materials of Autonomous RegionFollow
Wei Kong Pang, University of WollongongFollow
Zaiping Guo, University of WollongongFollow
Yaping Du, Xi'an Jiaotong University
Xincun Tang, Xinjiang University
Yali Cao, Xinjiang University

RIS ID

104617

Publication Details

Wang, X., Huang, Y., Jia, D., Pang, W. Kong., Guo, Z., Du, Y., Tang, X. & Cao, Y. (2015). Self-assembled sandwich-like vanadium oxide/graphene mesoporous composite as high-capacity anode material for lithium ion batteries. Inorganic Chemistry: including bioinorganic chemistry, 54 (24), 11799-11806.

Abstract

Sandwich-like V₂O₅/graphene mesoporous composite has been synthesized by a facile solvothermal approach. The crystalline structure, morphology, and electrochemical performance of the as-prepared materials have been investigated in detail. The results demonstrate that the 30-50 nm V₂O₅ particles are homogeneously anchored on conducting graphene sheets, which allow the V₂O₅ nanoparticles to be wired up to a current collector through the underlying conducting graphene layers. As an anode material for lithium ion batteries, the composite exhibits a high reversible capacity of 1006 mAh g^-1 at a current density of 0.5 A g^-1 after 300 cycles. It also exhibits excellent rate performance with a discharge capacity of 500 mAh g^-1 at the current density of 3.0 A g^-1, which is superior to the performance of the vanadium-based materials reported previously. The electrochemical properties demonstrate that the sandwich-like V₂O₅/graphene mesoporous composite could be a promising candidate material for high-capacity anode in lithium ion batteries.