Controllable construction of flower-like FeS/Fe2O3 composite for lithium storage

Jie Wang, Huan He, Zexing Wu, Jianing Liang, Lili Han, Huolin L. Xin, Xuyun Guo, Ye Zhu, Deli Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)

Abstract

Transitions metal sulfides/oxides have been considered as promising anode candidates for next generation lithium-ion batteries (LIBs) due to high theoretical capacities. However, the large volume change during lithiation/delithiation process and poor electronic conductivity often result in a poor charging/discharging performance. Herein, we design a flower-like FeS/Fe2O3 composite via a simple “solvothermal-oxidation” method, in which the Fe2O3 is most distributed on the surface of the flower. The unique porous structure and synergistic effect between FeS and Fe2O3 not only accommodate the large volume expansion, but also facilitate Li ion and electron transport. The Fe2O3 shell effectively reduce the dissolution of Li2Sx during discharge/charge process. When serving as the anode material in lithium ion battery, FeS/Fe2O3 exhibits superior specific capacity, rate capacity and cycling stability compared with pure FeS and Fe2O3.

Original languageEnglish
Pages (from-to)193-199
Number of pages7
JournalJournal of Power Sources
Volume392
DOIs
Publication statusPublished - 15 Jul 2018

Keywords

  • Flower-like FeS/FeO composite
  • Lithium storage
  • Porous structure
  • Synergistic performance
  • Volume discharging/charging compatibility

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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