Iron sulfides with dopamine-derived carbon coating as superior performance anodes for sodium-ion batteries

Aihua Jin, Seung Ho Yu, Jae Hyuk Park, Seok Mun Kang, Mi Ju Kim, Tae Yeol Jeon, Junyoung Mun, Yung Eun Sung

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

High energy ball-milled iron sulfides with thin carbon layer coating (BM-FeS/C composites) were prepared by the simple and economical process. Ball-milled process, followed by carbon coating, reduced the particle size and increased the electrical conductivity. When employed as sodium-ion battery anodes, BM-FeS/C composites showed extremely high electrochemical performance with reversible specific capacity of 589.8 mAh·g−1 after 100 cycles at a current density of 100 mA·g−1. They also exhibited superior rate capabilities of 375.9 mAh·g−1 even at 3.2 A·g−1 and 423.6 mAh·g−1 at 1.5 A·g−1. X-ray absorption near edge structure analysis confirmed the electrochemical pathway for conversion reaction of BM-FeS/C composites. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)2609-2613
Number of pages5
JournalNano Research
Volume12
Issue number10
DOIs
Publication statusPublished - 2019 Oct 1

Keywords

  • X-ray absorption near edge structure
  • dopamine
  • high energy ball-milling
  • iron sulfides
  • sodium-ion batteries

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

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