Jump to main content
Jump to site search


V2(PO4)O/C@CNTs hollow sphere with a core-shell structure as a high performance anode material for lithium-ion batteries

Abstract

V2(PO4)O is a novel promise anode material because of its stable crystal structure, low cost, and environmental friendliness. However, the low electronic and ionic conductivity result in poor specific capacity and rate performance, hindered its industrial applications. In this study, V2(PO4)O/C@CNT hollow spheres (HSs) with a core-shell structure were successfully synthesized by a simple spray drying method. Pluronic® F-127 acted as carbon source and template, induced the V2(PO4)O particles to form HSs. The V2(PO4)O/C@CNT HSs were composed of uniform HSs of about 0.4−0.6 μm in diameter and carbon nanotubes (CNTs). The HS structure enhances the electronic conductivity and lithium ion transport rate of V2(PO4)O/C materials and thus helps improve the electrochemical performance. CNTs not only increase the electronic conductivity and lithium ion transport rate but also hinder the aggregation of HSs. These activities enhance electrochemical performance. The lithium ion storage behavior of V2(PO4)O/C@CNT HSs are systematically studied at the potential range 0.01–3.0V. The V2(PO4)O/C@CNT HSs anode can achieve a high reversible capacity of 894.9 mAh g−1 at 0.1 A g−1 and can obtain a reversible capacity of 490.4 mAh g−1 at a high rate of 5 A g−1, perhaps the best electrochemical performance demonstrated so far for V2(PO4)O anode material (specific capacity and rate performance), indicating its promise for application as an anode material in advanced lithium-ion batteries.

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Nov 2018, accepted on 08 Jan 2019 and first published on 09 Jan 2019


Article type: Research Article
DOI: 10.1039/C8QM00619A
Citation: Mater. Chem. Front., 2019, Accepted Manuscript
  •   Request permissions

    V2(PO4)O/C@CNTs hollow sphere with a core-shell structure as a high performance anode material for lithium-ion batteries

    B. Xiao, W. Zhang, H. Xia, Z. Wang, L. Tang, C. An, Z. He, H. Tong and J. Zheng, Mater. Chem. Front., 2019, Accepted Manuscript , DOI: 10.1039/C8QM00619A

Search articles by author

Spotlight

Advertisements