标题: Boosting Alkaline Hydrogen Evolution Reaction by Modulating D-Band Center in Bimetallic Sulfide Ni3S2-FeS Heterointerfaces

作者: Liu, W (Liu, Wei); Wang, F (Wang, Fan); Wang, AY (Wang, Anyang); Guo, YZ (Guo, Yuzheng); Yin, HY (Yin, Huayi); Wang, DH (Wang, Dihua)

来源出版物: SMALL DOI: 10.1002/smll.202411028 Early Access Date: DEC 2024 Published Date: 2024 DEC 12

摘要: Hydrogen evolution reaction (HER) in alkaline electrolytes is considered to be the most promising industry-scale hydrogen (H-2) production method but is limited to the lack of low-cost, efficient, and stable HER catalysts. Here, a universal and scalable electrodeposition-sulfidization modulation strategy is developed to directly grow the Ni3S2-FeS heterojunction nanoarray on the commercial Ni foam (Ni3S2-FeS@NF). The as-prepared Ni3S2-FeS@NF catalyst only requires a low overpotential of 71 and 270 mV to reach the current density of 10 and 500 mA cm(-2) with a long-lasting lifetime of over 200 h. Moreover, the Ni3S2-FeS@NF catalyst can operate at industrial conditions (500 mA cm(-2) at 70 degrees C) for over 200 h stably at a low cell voltage of 1.71 V in an alkaline exchange membrane water electrolysis (AEMWE) device, which indicates a great prospect for practical application. In addition, in situ Raman experiments and density functional theory (DFT) calculations reveal that the downshift of the d-band center and interfacial synergistic actions due to the electron transfer between Ni3S2 and FeS reduce the water spitting energy barrier and optimize H/O-containing intermediates absorption, thereby improving the HER intrinsic catalytic activity. This work provides an atomic-level insight into designing efficient HER heterogeneous catalysts.

作者关键词: electrodeposition-sulfidization; heterojunction; hydrogen evolution reaction; interfacial electron transfer; Ni3S2-FeS

KeyWords Plus: EFFICIENT; ELECTROCATALYSTS; INTERFACE; CATALYSTS; SITES

地址: [Liu, Wei; Yin, Huayi; Wang, Dihua] Wuhan Univ, Int Cooperat Base Sustainable Utilizat Resources &, Wuhan 430072, Peoples R China.

[Liu, Wei; Yin, Huayi; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

[Liu, Wei] Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China.

[Wang, Fan] Zhejiang Univ Sci & Technol, Sch Biol & Chem Engn, Hangzhou 310023, Peoples R China.

[Wang, Anyang; Guo, Yuzheng] Wuhan Univ, Sch Elect Engn & Automat, Wuhan 430072, Peoples R China.

通讯作者地址: Yin, HY; Wang, DH (通讯作者)，Wuhan Univ, Int Cooperat Base Sustainable Utilizat Resources &, Wuhan 430072, Peoples R China.

Yin, HY; Wang, DH (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

Guo, YZ (通讯作者)，Wuhan Univ, Sch Elect Engn & Automat, Wuhan 430072, Peoples R China.

电子邮件地址: yguo@whu.edu.cn; yinhuayi@whu.edu.cn; wangdh@whu.edu.cn

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