Hollow Core-Shell SnO2/C Fibers as Highly Stable Anodes for Lithium-Ion Batteries

Dan Zhou, Wei Li Song, Li Zhen Fan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

130 Citations (Scopus)

Abstract

Given their competitive prospects for energy storage, lithium-ion batteries (LIBs) have attracted ever-intensive research interest. However, the large volume changes during cycling and structural pulverization significantly hinder the cycling stability and high capacity for lithium-alloy electrodes. Herein, novel one-dimensional (1D) hollow core-shell SnO2/C fibers were synthesized by facile coaxial electrospinning. The as-prepared fibers that possess sufficient hollow voids and nanosized SnO2 particles on the inner shell are able to serve as an anode in LIBs. The results suggest a reversible capacity of 1002 mAh g-1 (for the initial cycle at 100 mA g-1), excellent rate capability, and a highly stable cycling performance with a discharge capacity of 833 mAh g-1 after 500 cycles at 600 mA g-1. The superior electrochemical performance is attributed to the unique hollow core-shell structure, which offers sufficient voids for alleviating the volume changes of SnO2 nanoparticles during lithiation/delithiation processes. The promising strategies and associated opportunities here demonstrate great potential in the fabrication of advanced anode materials for long-life LIBs.

Original languageEnglish
Pages (from-to)21472-21478
Number of pages7
JournalACS applied materials & interfaces
Volume7
Issue number38
DOIs
Publication statusPublished - 30 Sept 2015
Externally publishedYes

Keywords

  • anode
  • coaxial electrospinning
  • fibers
  • hollow core-shell
  • lithium-ion batteries
  • tin oxide

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