Polypyrrole-Coated Zinc Ferrite Hollow Spheres with Improved Cycling Stability for Lithium-Ion Batteries

Xiaoran Sun, Hongwei Zhang, Liang Zhou, Xiaodan Huang, Chengzhong Yu

Research output: Contribution to journalArticlepeer-review

115 Scopus citations

Abstract

Here, ZnFe2O4 double-shell hollow microspheres are designed to accommodate the large volume expansion during lithiation. A facile and efficient vapor-phase polymerization method has been developed to coat the ZnFe2O4 hollow spheres with polypyrrole (PPY). The thin PPY coating improves not only the electronic conductivity but also the structural integrity, and thus the cycling stability of the ZnFe2O4 hollow spheres. Our work sheds light on how to enhance the electrochemical performance of transition metal oxide-based anode materials by designing delicate nanostructures.

Original languageEnglish
Pages (from-to)3732-3737
Number of pages6
JournalSmall
DOIs
StatePublished - 20 Jul 2016
Externally publishedYes

Keywords

  • hollow spheres
  • lithium-ion batteries
  • polypyrrole
  • vapor-phase deposition
  • zinc ferrite

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