Effect of high-pressure torsion on the hydrogen evolution performances of a melt-spun amorphous Fe73.5Si13.5B9Cu1Nb3 alloy

被引：14

作者：

Chu, Fei ^{[1
]}

Wu, Kaiyao ^{[1
]}

Meng, Yuying ^{[1
]}

Edalati, Kaveh ^{[2
]}

Lin, Huai-Jun ^{[1
]}

机构：

[1] Jinan Univ, Inst Adv Wear & Corros Resistance & Funct Mat, Guangzhou 510632, Peoples R China

[2] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka 8190395, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 49期

基金：

中国国家自然科学基金;

关键词：

Amorphous alloys; High-pressure torsion; Hydrogen evolution reaction; Fe-based alloys; Electrocatalysis; METALLIC-GLASS; CORROSION-RESISTANCE; ADVANCED CATALYST; ELECTROCATALYST; NICKEL; DEGRADATION; REDUCTION; NANOGLASS; GRAPHENE; NIOBIUM;

D O I：

10.1016/j.ijhydene.2021.05.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, a melt-spun amorphous Fe73.5Si13.5B9Cu1Nb3 alloy is subjected to highpressure torsion (HPT) treatment under 6 GPa in order to enhance the alkaline hydrogen evolution reaction (HER) performance. Different HPT turns, including 1, 2, 5 and 10, are selected and the samples are marked as HPT-1N, HPT-2N, HPT-5N and HPT-10 N, respectively. The HPT treatment can lead to a significant structural change such as partial crystallization and defect generation on the Fe-based amorphous alloy with a considerable increase in the HER electrocatalytic activity. The HPT-5N sample shows the best catalytic performance, with an overpotential of only 174 mV at 10 mA cm-2 current density in 1 M KOH, which is 244 mV lower than that of the melt-spun alloy at the same condition. Moreover, it was established that the HPT-treated amorphous alloy shows good stability during the HER cycling process. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：25029 / 25038

页数：10

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