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

doi:10.1002/chem.201405512

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 journal › Article › peer-review

16 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 language	English
Pages (from-to)	1429-1433
Number of pages	5
Journal	Chemistry - A European Journal
Volume	21
Issue number	4
DOIs	https://doi.org/10.1002/chem.201405512
Publication status	Published - 2015 Jan 19

Keywords

Energy conversion
Energy storage materials
Nanostructures
Spray drying
Synthesis design

ASJC Scopus subject areas

Catalysis
Organic Chemistry

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10.1002/chem.201405512

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

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.",

keywords = "Energy conversion, Energy storage materials, Nanostructures, Spray drying, Synthesis design",

author = "Won, {Jong Min} and Lee, {Jong Heun} and Kang, {Yun Chan}",

note = "Publisher Copyright: {\textcopyright} 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2015",

month = jan,

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doi = "10.1002/chem.201405512",

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AU - Won, Jong Min

AU - Lee, Jong Heun

AU - Kang, Yun Chan

PY - 2015/1/19

Y1 - 2015/1/19

N2 - 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.

AB - 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.

KW - Energy conversion

KW - Energy storage materials

KW - Nanostructures

KW - Spray drying

KW - Synthesis design

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U2 - 10.1002/chem.201405512

DO - 10.1002/chem.201405512

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SN - 0947-6539

VL - 21

SP - 1429

EP - 1433

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

IS - 4

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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