期刊
SCRIPTA MATERIALIA
卷 188, 期 -, 页码 135-139出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.07.040
关键词
Hydrogen evolution reaction; Fe-based alloy catalyst; Nanoglass; Amorphous alloys; High-pressure torsion
类别
资金
- Guangdong Basic and Applied Basic Research Foundation, China [2019A1515011985]
- Guangzhou Science and Technology Association Young Talent Lifting Project [X20200301071]
- Fundamental Research Funds for the Central Universities, China [21619415]
- MEXT, Japan [16H04539]
A Fe78Si9B13 nanoglass with improved alkaline hydrogen evolution performances is prepared by melt spinning followed by high-pressure torsion (HPT). HPT treatment induces slight unique crystallization meanwhile generates abundant interfaces/regions both inside the amorphous matrix and between the amorphous matrix and nanocrystallites. In 1.0 M KOH, the nanoglass requires an overpotential of only 112 mV to achieve the current density of 10 mA cm(-2), which is much smaller than those of the corresponding amorphous alloy (385 mV) and crystalline alloy (465 mV). Furthermore, catalytic performance of the nanoglass remains almost unchanged after 50 h continuous reaction. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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