Selenizing CoMoO4 nanoparticles within electrospun carbon nanofibers towards enhanced sodium storage performance

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Fang Li
  • Tianhao Yao
  • Lei Zhu
  • Ting Liu
  • Huiying Lu
  • Ruifeng Qian
  • Yan Liu
  • Xiaogang Han
  • Hongkang Wang

Detail(s)

Original languageEnglish
Pages (from-to)663-672
Number of pages10
Journal / PublicationJournal of Colloid and Interface Science
Volume586
Online published5 Nov 2020
Publication statusPublished - 15 Mar 2021

Abstract

Transition metal oxides/selenides as anodes for sodium-ion batteries (SIBs) suffer from the insufficient conductivity and large volumetric expansion, which leads to the poor electrochemical performance. To address these issues, we herein demonstrate a facile selenization method to enhance the sodium storage capability of CoMoO4 nanoparticles which are encapsulated into the electrospun carbon nanofibers (CMO@carbon for short). The partially and fully selenized CoMoO4 within carbon nanofibers (denote as CMOS@carbon and CMS@carbon, respectively) can be readily obtained by controlling the annealing temperature (at 400 and 600 °C, correspondingly). When examined as anode materials for SIBs, the CMOS@carbon nanofibers display an outstanding electrochemical performance with a higher reversible capacity of 396 mA h g−1 after 200 cycles at 0.2 A g−1 and a high-rate capacity of 365 mA h g−1 at 2 A g−1, as compared with the CMO@carbon and CMS@carbon counterparts. The enhanced sodium storage performance of the CMOS@carbon can be owing to the partial selenization of the CoMoO4 nanoparticles which are rooted into the porous electrospun carbon nanofibers, thus endowing them with superior ionic/electronic charge transfer efficiencies and a cushion against the electrode pulverization during cycling. Moreover, this work proposed a useful strategy to enhance the sodium storage performance of metal oxides via controlled selenization, which is promising for exploiting the advanced anode materials for SIBs.

Research Area(s)

  • CoMoO4@carbon nanofibers, CoSe2/MoSe2, Electrospinning, Selenization, Sodium ion batteries

Citation Format(s)

Selenizing CoMoO4 nanoparticles within electrospun carbon nanofibers towards enhanced sodium storage performance. / Li, Fang; Xiao, Fengping; Yao, Tianhao; Zhu, Lei; Liu, Ting; Lu, Huiying; Qian, Ruifeng; Liu, Yan; Han, Xiaogang; Wang, Hongkang.

In: Journal of Colloid and Interface Science, Vol. 586, 15.03.2021, p. 663-672.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review