Robust SnO2−x Nanoparticle-Impregnated Carbon Nanofibers with Outstanding Electrochemical Performance for Advanced Sodium-Ion Batteries

Dingtao Ma, Yongliang Li, Hongwei Mi, Shan Luo, Peixin Zhang, Zhiqun Lin, Jianqing Li, Han Zhang

Research output: Contribution to journalArticlepeer-review

247 Scopus citations

Abstract

The sluggish sodium reaction kinetics, unstable Sn/Na2O interface, and large volume expansion are major obstacles that impede practical applications of SnO2-based electrodes for sodium-ion batteries (SIBs). Herein, we report the crafting of homogeneously confined oxygen-vacancy-containing SnO2−x nanoparticles with well-defined void space in porous carbon nanofibers (denoted SnO2−x/C composites) that address the issues noted above for advanced SIBs. Notably, SnO2−x/C composites can be readily exploited as the working electrode, without need for binders and conductive additives. In contrast to past work, SnO2−x/C composites-based SIBs show remarkable electrochemical performance, offering high reversible capacity, ultralong cyclic stability, and excellent rate capability. A discharge capacity of 565 mAh g−1 at 1 A g−1 is retained after 2000 cycles.

Original languageEnglish
Pages (from-to)8901-8905
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number29
DOIs
StatePublished - 16 Jul 2018

Bibliographical note

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • SnO nanoparticles
  • carbon nanofibers
  • energy storage
  • sodium-ion batteries

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