Chitosan-Assisted Fabrication of a Network C@V2O5Cathode for High-Performance Zn-Ion Batteries

Chunxue Liu, Rui Li, Weijia Liu, Guozhen Shen*, Di Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

Vanadium oxide-based aqueous zinc-ion batteries exhibit promising potential due to their low cost and safety profiles. However, fabricating cathodes with outstanding electrochemical performance for Zn-ion batteries is still a challenge. Herein, network C@V2O5 materials were prepared using a mild chitosan-assisted hydrothermal process. Coin-type cells, using network C@V2O5 as a cathode, zinc film as an anode, and Zn(CF3SO3)2 as an electrolyte, were also assembled, and the as-synthesized cathode delivered a high specific capacity of 361 mA h g-1 at 0.5 A g-1 and excellent cyclic stability. Specifically, after 2000 cycles, the capacity still remained about 71% of the initial value at 0.5 A g-1. Moreover, ex situ X-ray diffraction (XRD) characterizations confirmed that Zn-ion storage in the cathode was achieved through the reversible intercalation/extraction of Zn2+ during the charge/discharge process. Therefore, the network C@V2O5 cathode demonstrated potential applications for zinc-ion batteries.

Original languageEnglish
Pages (from-to)37194-37200
Number of pages7
JournalACS applied materials & interfaces
Volume13
Issue number31
DOIs
Publication statusPublished - 11 Aug 2021
Externally publishedYes

Keywords

  • cathode
  • chitosan-assisted fabrication
  • cycle performance
  • high capacity
  • network C@VO
  • zinc-ion battery

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