An amorphous FeMoS4 nanorod array toward efficient hydrogen evolution electrocatalysis under neutral conditions,Chemical Communications

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An amorphous FeMoS4 nanorod array toward efficient hydrogen evolution electrocatalysis under neutral conditions
Chemical Communications ( IF 4.3 ) Pub Date : 2017-07-17 00:00:00 , DOI: 10.1039/c7cc03702c
Xiang Ren _{1,

2,

3,

4,

5} , Weiyi Wang _{1,

2,

3,

4} , Ruixiang Ge _{1,

2,

3,

4,

6} , Shuai Hao _{1,

2,

3,

4} , Fengli Qu _{4,

7,

8,

9} , Gu Du _{4,

10,

11} , Abdullah M. Asiri _{12,

13,

14,

15} , Qin Wei _{4,

5,

16,

17,

18} , Liang Chen _{4,

6,

19,

20} , Xuping Sun _{1,

2,

3,

4}

Affiliation

College of Chemistry
Sichuan University
Chengdu 610064
China
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
Ningbo Institute of Materials Technology and Engineering
College of Chemistry and Chemical Engineering
Qufu Normal University
Qufu 273165
Chengdu Institute of Geology and Mineral Resources
Chengdu 610081
Chemistry Department
Faculty of Science
King Abdulaziz University
Saudi Arabia
School of Chemistry and Chemical Engineering
University of Jinan
Jinan 250022
Chinese Academy of Science
Ningbo 315201

It is highly attractive to develop efficient hydrogen-evolving electrocatalysts under neutral conditions. In this communication, we report an amorphous FeMoS₄ nanorod array on carbon cloth (FeMoS₄ NRA/CC) prepared by hydrothermal treatment of an FeOOH nanorod array on carbon cloth (FeOOH NRA/CC) in (NH₄)₂MoS₄ solution. As a 3D electrode for hydrogen evolution electrocatalysis, this FeMoS₄ NRA/CC demonstrates superior catalytic activity and strong long-term electrochemical durability in 1.0 M phosphate buffered saline (pH: 7). It needs an overpotential of 204 mV to drive a geometrical current density of 10 mA cm⁻², which is 450 mV less than that for FeOOH NRA/CC. Density functional theory calculations suggest that FeMoS₄ has a more favourable hydrogen adsorption free energy than FeOOH.

中文翻译：

一种无定形的FeMoS ₄纳米棒阵列，在中性条件下可有效地进行氢放出电催化

在中性条件下开发高效的析氢电催化剂具有很高的吸引力。在此交流中，我们报告了碳纤维布上的无定形FeMoS ₄纳米棒阵列（FeMoS ₄ NRA / CC），是通过在（NH ₄）₂ MoS ₄溶液中对碳布上的FeOOH纳米棒阵列（FeOOH NRA / CC）进行水热处理而制备的。作为用于氢析出电催化的3D电极，此FeMoS ₄ NRA / CC在1.0 M磷酸盐缓冲盐水（pH：7）中表现出卓越的催化活性和强大的长期电化学耐久性。它需要204 mV的过电势才能驱动10 mA cm ^-2的几何电流密度，比FeOOH NRA / CC的电压低450 mV。密度泛函理论计算表明，FeMoS ₄具有比FeOOH更好的氢吸附自由能。

更新日期：2017-07-28

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