In-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays as an advanced overall water splitting electrocatalyst in alkaline solution

Ting Xiong, Guofang Li, David J. Young, Ziyu Tan, Xian Hong Yin, Yan Mi, Feilong Hu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Developing high-performance overall water-splitting electrocatalysts working under alkaline condition is highly desirable but many challenges remain. Herein, the in-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays, which supported on carbon fibers (Ni-Mo-S@Co 3 O 4 /CF) was designed and constructed. The as-prepared hybrid catalyst exhibits excellent electrocatalytic performance for both OER and HER under alkaline conditions, with only a small overpotential of 275 mV and 85 mV at a current density of 10 mA cm −2 , respectively. Furthermore, the hybrid catalysts assembled full electrolyzer achieved a current density of 10 mA cm −2 at 1.57 V in an alkaline condition, without decay even after a durability test of 50 h. These results demonstrate that in-situ surface-derivation is a promising strategy for the design of efficient overall water splitting catalysts.

Original languageEnglish
Pages (from-to)328-335
Number of pages8
JournalJournal of Alloys and Compounds
Volume791
Early online date26 Mar 2019
DOIs
Publication statusPublished - 30 Jun 2019

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Bimetals
Nanosheets
Electrocatalysts
Sulfides
Catalysts
Water
Current density
Carbon fibers
Durability

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title = "In-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays as an advanced overall water splitting electrocatalyst in alkaline solution",
abstract = "Developing high-performance overall water-splitting electrocatalysts working under alkaline condition is highly desirable but many challenges remain. Herein, the in-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays, which supported on carbon fibers (Ni-Mo-S@Co 3 O 4 /CF) was designed and constructed. The as-prepared hybrid catalyst exhibits excellent electrocatalytic performance for both OER and HER under alkaline conditions, with only a small overpotential of 275 mV and 85 mV at a current density of 10 mA cm −2 , respectively. Furthermore, the hybrid catalysts assembled full electrolyzer achieved a current density of 10 mA cm −2 at 1.57 V in an alkaline condition, without decay even after a durability test of 50 h. These results demonstrate that in-situ surface-derivation is a promising strategy for the design of efficient overall water splitting catalysts.",
keywords = "Alkaline condition, Bimetal sulfides, Electrocatalytic, Overall water-splitting",
author = "Ting Xiong and Guofang Li and Young, {David J.} and Ziyu Tan and Yin, {Xian Hong} and Yan Mi and Feilong Hu",
year = "2019",
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language = "English",
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journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier",

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In-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays as an advanced overall water splitting electrocatalyst in alkaline solution. / Xiong, Ting; Li, Guofang; Young, David J.; Tan, Ziyu; Yin, Xian Hong; Mi, Yan; Hu, Feilong.

In: Journal of Alloys and Compounds, Vol. 791, 30.06.2019, p. 328-335.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Xiong, Ting

AU - Li, Guofang

AU - Young, David J.

AU - Tan, Ziyu

AU - Yin, Xian Hong

AU - Mi, Yan

AU - Hu, Feilong

PY - 2019/6/30

Y1 - 2019/6/30

N2 - Developing high-performance overall water-splitting electrocatalysts working under alkaline condition is highly desirable but many challenges remain. Herein, the in-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays, which supported on carbon fibers (Ni-Mo-S@Co 3 O 4 /CF) was designed and constructed. The as-prepared hybrid catalyst exhibits excellent electrocatalytic performance for both OER and HER under alkaline conditions, with only a small overpotential of 275 mV and 85 mV at a current density of 10 mA cm −2 , respectively. Furthermore, the hybrid catalysts assembled full electrolyzer achieved a current density of 10 mA cm −2 at 1.57 V in an alkaline condition, without decay even after a durability test of 50 h. These results demonstrate that in-situ surface-derivation is a promising strategy for the design of efficient overall water splitting catalysts.

AB - Developing high-performance overall water-splitting electrocatalysts working under alkaline condition is highly desirable but many challenges remain. Herein, the in-situ surface-derivation of Ni-Mo bimetal sulfides nanosheets on Co 3 O 4 nanoarrays, which supported on carbon fibers (Ni-Mo-S@Co 3 O 4 /CF) was designed and constructed. The as-prepared hybrid catalyst exhibits excellent electrocatalytic performance for both OER and HER under alkaline conditions, with only a small overpotential of 275 mV and 85 mV at a current density of 10 mA cm −2 , respectively. Furthermore, the hybrid catalysts assembled full electrolyzer achieved a current density of 10 mA cm −2 at 1.57 V in an alkaline condition, without decay even after a durability test of 50 h. These results demonstrate that in-situ surface-derivation is a promising strategy for the design of efficient overall water splitting catalysts.

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