A 3D flower-like VO 2 /MXene hybrid architecture with superior anode performance for sodium ion batteries

Feng Wu, Ying Jiang, Zhengqing Ye, Yongxin Huang, Ziheng Wang, Shuaijie Li, Yang Mei, Man Xie, Li Li, Renjie Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

128 Citations (Scopus)

Abstract

VO 2 is considered to be a promising sodium ion storage material owing to its high specific capacity. However, the cycling stability and rate performance obtained from this material are still unsatisfactory, as a result of inferior electronic conductivity and significant volume expansion during the charge/discharge process. Herein, we report a VO 2 /MXene hybrid having a three-dimensional (3D) flower-like architecture, synthesized via a facile hydrothermal method. Based on the synergistic effect of the VO 2 and MXene, this material exhibits superior sodium storage behavior. When used as an anode in sodium ion batteries, the as-prepared VO 2 /MXene demonstrates a high reversible capacity of 280.9 mA h g -1 at a current density of 0.1 A g -1 , exceptional cycling life (141% capacity retention over 200 cycles at 0.1 A g -1 ) and good rate capacity (206 mA h g -1 at 1.6 A g -1 ). This VO 2 /MXene hybrid therefore shows promise as an anode material for use in sodium ion batteries.

Original languageEnglish
Pages (from-to)1315-1322
Number of pages8
JournalJournal of Materials Chemistry A
Volume7
Issue number3
DOIs
Publication statusPublished - 2019

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