Electrochemical properties of yolk-shell-structured Zn-Fe-S multicomponent sulfide materials with a 1: 2 Zn/Fe molar ratio

Jong Min Won, Jong Heun Lee, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Yolk-shell-structured Zn-Fe-S multicomponent sulfide materials with a 1:2 Zn/Fe molar ratio were prepared applying a sulfidation process to ZnFe2O4 yolk-shell powders. The Zn-Fe-S powders had mixed sphalerite (Zn,Fe)S and hexagonal FeS crystal structures. The discharge capacities of the Zn-Fe-S powders sulfidated at 350 °C at a constant current density of 500 mA g-1 for the first, second, and fiftieth cycles were 1098, 912, and 913 mA h g-1, respectively. The powders exhibited a high discharge capacity of 602 mA hg-1 even at the high current density of 10 A g-1. The synergistic effect of yolk-shell structure and multicomponent composition improved the electrochemical properties of Zn-Fe-S powders.

Original languageEnglish
Pages (from-to)1429-1433
Number of pages5
JournalChemistry - A European Journal
Volume21
Issue number4
DOIs
Publication statusPublished - 2015 Jan 19

Keywords

  • Energy conversion
  • Energy storage materials
  • Nanostructures
  • Spray drying
  • Synthesis design

ASJC Scopus subject areas

  • Chemistry(all)

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