Electrochemical evolution of hydrogen on composite La-Ni-Al/Ni-S alloy film in water electrolysis

被引：8

作者：

Han, Qing ^{[1
,2
]}

Jin, Yan ^{[3
]}

Pu, Nianwen ^{[4
]}

Liu, Kuiren ^{[1
,2
]}

Chen, Jianshe ^{[1
,2
]}

Wei, Xujun ^{[1
]}

机构：

[1] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China

[2] Northeastern Univ, Minist Educ, Key Lab Ecol Met Multimetall Mineral, Shenyang 110004, Peoples R China

[3] Shenyang Enter Exit Inspect & Quarantine Bur PR C, Shenyang 110016, Peoples R China

[4] Sichuan Chuan Wei Grp Co Ltd, Chengdu 610100, Peoples R China

来源：

RENEWABLE ENERGY | 2010年 / 35卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Composite La-Ni-Al/Ni-S film; Water electrolysis; HER; Hydrogen storage alloy; Molten salt electrolysis; CATALYTIC ACTIVITY; ELECTRODES; CATHODES; ELECTROCATALYSTS; KINETICS; SORPTION; ENERGY; MO;

D O I：

10.1016/j.renene.2010.03.015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The composite La-Ni-Al/Ni-S alloy film was obtained by molten salt electrolysis and aquatic electro-deposition in turn. The La-Ni-Al alloy film was prepared in Na3AlF6-La2O3-Al2O3 molten salt electrolyte by galvanostatic electrolysis at 100 mA cm(-2). The results showed that La3+ and Al3+ ions could be co-reduced on the nickel cathode and form La-Ni-Al film at c.a. -0.5 V. which is much lower than that of the theoretical decomposition potential of lanthanum and aluminum. With high HER activity, the composite La-Ni-Al/Ni-S film (eta(150) = 70 my, 353 K) could absorb large amount of H atoms. Instead of the dissolution of the Ni-S film, the absorbed H atoms would be oxidized under intermittent electrolysis effectively and prolong the lifetime of the cathode. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2627 / 2631

页数：5

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