Preparation of Al-Mg alloy electrodes by using powder metallurgy and their application for hydrogen production

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題名:	Preparation of Al-Mg alloy electrodes by using powder metallurgy and their application for hydrogen production
作者:	施登士;Hsu, Wen-Nong;Lin, Ming-Yuan;Shih, Teng-Shih
貢獻者:	工學院機械工程學系
關鍵詞:	Alternative energy sources;Bubbles;Composite materials;Decomposition;Efficiency;Electrodes;Electrolytes;Energy consumption;Magnetic fields;Studies;Temperature
日期:	2014-01-01
上傳時間:	2026-04-23 15:23:11 (UTC+8)
出版者:	Hindawi Publishing Corporation;Cairo, Egypt: Hindawi Publishing Corporation
摘要:	摘要： The choice of an electrode is the most critical parameter for water electrolysis. In this study, powder metallurgy is used to prepare aluminum-magnesium (Al-Mg) alloy electrodes. In addition to pure Mg and Al electrodes, five Al-Mg alloy electrodes composed of Al-Mg (10 wt%), Al-Mg (25 wt%), Al-Mg (50 wt%), and Al-Mg (75 wt%) were prepared. In water electrolysis experiments, the pure Al electrode exhibited optimal electrolytic efficiency. However, the Al-Mg (25 wt%) alloy was the most efficient when the anticorrosion effect and materials costs were considered. In this study, an ultrasonic field was applied to the electrolysis cell to improve its efficiency. The results revealed that the current increased by approximately 23.1% when placed in a 30 wt% KOH solution under the ultrasonic field. Electrochemical polarization impedance spectroscopy (EIS) was employed to evaluate the effect of the ultrasonic field on the reduction of polarization resistance. The results showed that the concentration impedance in the 30 wt% KOH electrolyte decreased markedly by 44%–51% Ω. 出版者： Cairo, Egypt: Hindawi Publishing Corporation 出版日期： 2014-01-01 出處： Advances in materials science and engineering, 2014-01, Vol.2014 (2014), p.1-7 資源來源： ProQuest Publicly Available Content Database 版權： Copyright © 2014 Wen-Nong Hsu et al. 版權： Copyright © 2014 Wen-Nong Hsu et al. Wen-Nong Hsu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 識別號： ISSN: 1687-8434 識別號： ISSN: 1687-8442 識別號： EISSN: 1687-8442 識別號： DOI: 10.1155/2014/594984
顯示於類別:	[機械工程學系] 期刊論文

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