Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting

Transition metal sulphide electrocatalytic materials possess the bright overall water-splitting performance of practical electrocatalytic technologies. In this study, an amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub&g...

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出版年:Nanomaterials
主要な著者: Zhen Pei, Tengteng Qin, Rui Tian, Yangxin Ou, Xingzhong Guo
フォーマット: 論文
言語:英語
出版事項: MDPI AG 2023-08-01
主題:
MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>
amethyst-like rods
bifunctional electrocatalysts
overall water splitting
オンライン･アクセス:https://www.mdpi.com/2079-4991/13/16/2302
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author Zhen Pei
Tengteng Qin
Rui Tian
Yangxin Ou
Xingzhong Guo
author_facet Zhen Pei
Tengteng Qin
Rui Tian
Yangxin Ou
Xingzhong Guo
author_sort Zhen Pei
collection DOAJ
container_title Nanomaterials
description Transition metal sulphide electrocatalytic materials possess the bright overall water-splitting performance of practical electrocatalytic technologies. In this study, an amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> rod electrocatalyst was constructed via a one-step hydrothermal method with in-situ-grown ZIF-67 nanoparticles on nickel foam (NF) as a precursor. The rational design and synthesis of MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> endow the catalyst with neat nanorods morphology and high conductivity. The MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>/NF with the amethyst-like rod structure exposes abundant active sites and displays fast electron-transfer capability. The resultant MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>/NF exhibits outstanding hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrocatalytic activities, with low overpotentials of 81.24 mV (HER) at 10 mA cm<sup>−2</sup> and 159.67 mV (OER) at 50 mA cm<sup>−2</sup> in 1.0 M KOH solution. The full-cell voltage of overall water splitting only achieves 1.45 V at 10 mA cm<sup>−2</sup>. The successful preparation of the amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> rod electrocatalyst provides a reliable reference for obtaining efficient electrocatalysts for overall water splitting.
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spelling doaj-art-d7c099254fcf48d7bfb3db78fec2ec892025-08-19T22:51:36ZengMDPI AGNanomaterials2079-49912023-08-011316230210.3390/nano13162302Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water SplittingZhen Pei0Tengteng Qin1Rui Tian2Yangxin Ou3Xingzhong Guo4State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaTransition metal sulphide electrocatalytic materials possess the bright overall water-splitting performance of practical electrocatalytic technologies. In this study, an amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> rod electrocatalyst was constructed via a one-step hydrothermal method with in-situ-grown ZIF-67 nanoparticles on nickel foam (NF) as a precursor. The rational design and synthesis of MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> endow the catalyst with neat nanorods morphology and high conductivity. The MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>/NF with the amethyst-like rod structure exposes abundant active sites and displays fast electron-transfer capability. The resultant MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>/NF exhibits outstanding hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrocatalytic activities, with low overpotentials of 81.24 mV (HER) at 10 mA cm<sup>−2</sup> and 159.67 mV (OER) at 50 mA cm<sup>−2</sup> in 1.0 M KOH solution. The full-cell voltage of overall water splitting only achieves 1.45 V at 10 mA cm<sup>−2</sup>. The successful preparation of the amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> rod electrocatalyst provides a reliable reference for obtaining efficient electrocatalysts for overall water splitting.https://www.mdpi.com/2079-4991/13/16/2302MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>amethyst-like rodsbifunctional electrocatalystsoverall water splitting
spellingShingle Zhen Pei
Tengteng Qin
Rui Tian
Yangxin Ou
Xingzhong Guo
Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting
MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>
amethyst-like rods
bifunctional electrocatalysts
overall water splitting
title Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting
title_full Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting
title_fullStr Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting
title_full_unstemmed Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting
title_short Construction of an Amethyst-like MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub> Rod Electrocatalyst for Overall Water Splitting
title_sort construction of an amethyst like mos sub 2 sub ni sub 9 sub s sub 8 sub co sub 3 sub s sub 4 sub rod electrocatalyst for overall water splitting
topic MoS<sub>2</sub>@Ni<sub>9</sub>S<sub>8</sub>/Co<sub>3</sub>S<sub>4</sub>
amethyst-like rods
bifunctional electrocatalysts
overall water splitting
url https://www.mdpi.com/2079-4991/13/16/2302
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AT tengtengqin constructionofanamethystlikemossub2subnisub9subssub8subcosub3subssub4subrodelectrocatalystforoverallwatersplitting
AT ruitian constructionofanamethystlikemossub2subnisub9subssub8subcosub3subssub4subrodelectrocatalystforoverallwatersplitting
AT yangxinou constructionofanamethystlikemossub2subnisub9subssub8subcosub3subssub4subrodelectrocatalystforoverallwatersplitting
AT xingzhongguo constructionofanamethystlikemossub2subnisub9subssub8subcosub3subssub4subrodelectrocatalystforoverallwatersplitting

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