Electrochemical Properties of Yolk-Shell-Structured Zn-Fe-S Multicomponent Sulfide Materials with a 1:2 Zn/Fe Molar Ratio
- Authors
- Won, Jong Min; Lee, Jong-Heun; Kang, Yun Chan
- Issue Date
- 19-1월-2015
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- energy conversion; energy storage materials; nanostructures; spray drying; synthesis design
- Citation
- CHEMISTRY-A EUROPEAN JOURNAL, v.21, no.4, pp.1429 - 1433
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY-A EUROPEAN JOURNAL
- Volume
- 21
- Number
- 4
- Start Page
- 1429
- End Page
- 1433
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/94628
- DOI
- 10.1002/chem.201405512
- ISSN
- 0947-6539
- 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 degrees 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 h g(-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.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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