Phase-separation-driven formation of nickel-cobalt oxide nanotubes as high-capacity anode materials for lithium-ion batteries

Bingqing Xu, Bingkun Hu, Qinghua Zhang, Yijie Xu, Yuan Liu, Wei Yu, Liangliang Li, Yang Shen, Ce Wen Nan, Yuan Hua Lin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Nickel-Cobalt oxide nanotubes are prepared by a simple electrospinning technique based on a phase-separation mechanism. Extra tetraethyl orthosilicate (Si(OC2H5)4) is introduced and removed by design to obtain nanotube structure. The prepared nanotubes deliver remarkable electrochemical performance as the lithium-ion batteries anode materials. It possesses a capacity of 924 mAh/g after 95 cycles at 100 mA/g. At 2000 mA/g, it has a high capacity of 770 mAh/g, and still has 255 mAh/g at 1000 mA/g after 500 cycles. The outstanding electrochemical performance is attributed to the unique hierarchical tubular nanostructures design. This simple method opens new opportunities for fabricating practical nanostructured anode materials. IMPACT STATEMENT: This paper gives a simple phase separation method to fabricate polycrystalline nanotube structures and the nanotubes are suitable as lithium battery anode materials with remarkably enhanced lithium storage.

Original languageEnglish
Pages (from-to)368-375
Number of pages8
JournalMaterials Research Letters
Volume7
Issue number9
DOIs
Publication statusPublished - 2019 Jan 8
Externally publishedYes

Keywords

  • High capacity anode materials
  • Lithium-ion batteries
  • Phase separation method
  • Transition metal oxide

ASJC Scopus subject areas

  • Materials Science(all)

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