Preliminary investigation of some commercial alloys for hydrogen evolution in alkaline water electrolysis

被引：10
|
作者：
Andrade, MHD
Acioli, ML
Júnior, JGD
Silva, JCP
Vilar, EO
Tonholo, J [1 ]
机构：
[1] Univ Fed Alagoas, Dept Quim, BR-57072970 Maceio, AL, Brazil
[2] Braskem SA, Maceio, AL, Brazil
[3] Univ Fed Campina Grande, Dept Engn Quim, Campina Grande, PB, Brazil
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2004年 / 29卷 / 03期
关键词：
hydrogen evolution; Ni-based alloys; chlor-alkali process; commercial alloys;
D O I：
10.1016/S0360-3199(03)00132-0
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：
The electrolytical behavior of 16 commercial alloys was investigated as cathodic material to hydrogen evolution. The results were compared with SAE1020 and N1200, used as standards. The electrolytic experiments were carried out in controlled current (240 and 345 mA cm(-2)), intercalated by polarization at undercurrent condition. The analysis of the potential stability during the electrolytic process shows that the following alloys are advantageous to substitute the mild steel currently used: 2RK65, SAF2304, SAF2507, C22 and MONELK500. Surprisingly, SAF2205 alloy showed as far as 250 mV less cathodic to hydrogen evolution reaction, becoming a very promising material for hydrogen evolution. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：235 / 241
页数：7
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