2中，并制備了包覆在泡沫鎳上的V，Ru共摻雜NiS2微球(V, Ru)-NiS2/NF電催化劑。通過硫化過程產(chǎn)生粗糙的高爾夫球狀結(jié)構(gòu)暴露出豐富的活性位點，此外，釩和釕的協(xié)同作用可以優(yōu)化NiS2的電子結(jié)構(gòu)，提供額外的催化活性位點，進(jìn)一步增強本征催化活性。泡沫鎳的加入對催化材料起到支撐作用，避免聚集，同時提高導(dǎo)電性。結(jié)果表明，(V, Ru)-NiS2/NF電催化劑在堿性條件下表現(xiàn)出優(yōu)異的電催化性能和優(yōu)異的析氫反應(yīng)穩(wěn)定性。在10 mA·cm-2的電流密度下，(V, Ru)-NiS2/NF提供了38 mV的過電位，小于商業(yè)Pt/C的過電位，并且具有較低的Tafel斜率（80.3 mV·dec-1）、較高的電化學(xué)活性表面（ECSA）和在KOH溶液中24 h出色的穩(wěn)定性。"/>

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V，Ru共摻雜NiS2 高爾夫微球作為堿性介質(zhì)析氫反應(yīng)的高效電催化劑
作者:
作者單位:

1.昆明貴研催化劑有限責(zé)任公司，云南 昆明 650106;2.昆明理工大學(xué) 冶金與能源工程學(xué)院，云南 昆明 650106;3.昆明貴金屬研究所，云南 昆明 650106

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基金項目:

鉑族金屬環(huán)境治理與化工催化新材料關(guān)鍵技術(shù)研發(fā)與應(yīng)用示范


Golf-like (V, Ru)-co-doped NiS2 Microspheres as Efficient Electrocatalysts for Hydrogen Evolution Reaction in Alkaline Media
Author:
Affiliation:

1.Kunming Sino-Platinum Metals Catalyst Co., Ltd, Kunming 650106, China;2.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650106, China;3.Kunming Institute of Precious Metals, Kunming 650106, China

Fund Project:

Platinum Group Metal Environmental Treatment and Key Technology Research and Application Demonstration of New Chemical Catalytic Materials (202102AB080007)

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    摘要:

    通過溶劑熱法和滴釕法（室溫）將釩和釕引入到NiS2中，并制備了包覆在泡沫鎳上的V，Ru共摻雜NiS2微球(V, Ru)-NiS2/NF電催化劑。通過硫化過程產(chǎn)生粗糙的高爾夫球狀結(jié)構(gòu)暴露出豐富的活性位點，此外，釩和釕的協(xié)同作用可以優(yōu)化NiS2的電子結(jié)構(gòu)，提供額外的催化活性位點，進(jìn)一步增強本征催化活性。泡沫鎳的加入對催化材料起到支撐作用，避免聚集，同時提高導(dǎo)電性。結(jié)果表明，(V, Ru)-NiS2/NF電催化劑在堿性條件下表現(xiàn)出優(yōu)異的電催化性能和優(yōu)異的析氫反應(yīng)穩(wěn)定性。在10 mA·cm-2的電流密度下，(V, Ru)-NiS2/NF提供了38 mV的過電位，小于商業(yè)Pt/C的過電位，并且具有較低的Tafel斜率（80.3 mV·dec-1）、較高的電化學(xué)活性表面（ECSA）和在KOH溶液中24 h出色的穩(wěn)定性。

    Abstract:

    Vanadium and ruthenium were introduced into NiS2 via solvothermal method and ruthenium drop method (room temperature) to prepare (V, Ru)-co-doped NiS2 microspheres coated on Ni foam ((V, Ru)-NiS2/NF) as electrocatalysts. The rough golf-like structure allowed the exposure of abundant active sites via sulfuration process. Moreover, the cooperation of vanadium and ruthenium could optimize the electronic structure of NiS2, provide extra catalytically active sites, and further strengthen the intrinsic catalytic activity. Besides, the addition of nickel foam could support the catalytic material, avoid the aggregation, and enhance the conductivity. Results show that the obtained (V, Ru)-NiS2/NF electrocatalysts exhibit excellent electrocatalytic performance and superior stability for hydrogen evolution reaction (HER) in alkaline media. At the current density of 10 mA·cm-2, the presented (V, Ru)-NiS2/NF delivers an overpotential of 38 mV, which is smaller than that of commercial Pt/C, and possesses lower Tafel slope (80.3 mV·dec-1), higher relative electrochemical active surface area (ECSA) and excellent durability in 1 mol/L KOH for 24 h.

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王文思,劉輝,余澤錦,盧軍,馮豐,桓源峰,趙云昆,余建民,卿山,畢向光.V，Ru共摻雜NiS2 高爾夫微球作為堿性介質(zhì)析氫反應(yīng)的高效電催化劑[J].稀有金屬材料與工程,2023,52(2):461~469.[Wang Wensi, Liu Hui, Yu Zejin, Lu Jun, Feng Feng, Huan Yuanfeng, Zhao Yunkun, Yu Jianmin, Qing Shan, Bi Xiangguang. Golf-like (V, Ru)-co-doped NiS2 Microspheres as Efficient Electrocatalysts for Hydrogen Evolution Reaction in Alkaline Media[J]. Rare Metal Materials and Engineering,2023,52(2):461~469.]
DOI：10.12442/j. issn.1002-185X.20220388

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  • 收稿日期:2022-05-06
  • 最后修改日期:2023-02-02
  • 錄用日期:2022-08-11
  • 在線發(fā)布日期: 2023-03-03
  • 出版日期: 2023-02-28