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

Authors
Jin, AihuaYu, Seung-HoPark, Jae-HyukKang, Seok MunKim, Mi-JuJeon, Tae-YeolMun, JunyoungSung, Yung-Eun
Issue Date
10월-2019
Publisher
TSINGHUA UNIV PRESS
Keywords
sodium-ion batteries; iron sulfides; high energy ball-milling; dopamine; X-ray absorption near edge structure
Citation
NANO RESEARCH, v.12, no.10, pp.2609 - 2613
Indexed
SCIE
SCOPUS
Journal Title
NANO RESEARCH
Volume
12
Number
10
Start Page
2609
End Page
2613
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/62689
DOI
10.1007/s12274-019-2495-4
ISSN
1998-0124
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 center dot g(-1) after 100 cycles at a current density of 100 mA center dot g(-1). They also exhibited superior rate capabilities of 375.9 mAh center dot g(-1) even at 3.2 A center dot g(-1) and 423.6 mAh center dot g(-1) at 1.5 A center dot g(-1). X-ray absorption near edge structure analysis confirmed the electrochemical pathway for conversion reaction of BM-FeS/C composites.
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