Hydrogen evolution reaction activity and stability of sintered porous Ni-Cu-Ti-La2O3 cathodes in a wide pH range

被引：27

作者：

Wu, Liang ^{[1
]}

Zhou, Zikun ^{[1
]}

Xiao, Yifeng ^{[1
]}

Xu, Zhixin ^{[2
]}

Li, Xi ^{[3
]}

机构：

[1] Xiangtan Univ, Sch Mech Engn, Xiangtan 411105, Peoples R China

[2] Nucl Power Inst China, Res Design Inst, Chengdu 610213, Sichuan, Peoples R China

[3] Changsha Univ Sci & Technol, Hunan Prov Key Lab Flexible Elect Mat Genome Engn, Changsha 410004, Hunan, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 21期

关键词：

Hydrogen evolution reaction; Electrocatalytic activity; Rare earth; Porous Ni-Cu-Ti-La(2)O3electrode; SHAPE-MEMORY ALLOY; XPS CHARACTERIZATION; CRYSTALLINE ALLOYS; CATALYTIC-ACTIVITY; EFFICIENT; NANOSHEETS; ELECTROCATALYST; NANOPARTICLES; ELECTRODE; NICKEL;

D O I：

10.1016/j.ijhydene.2022.01.019

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：

Finding a low-cost, efficient, stable, and workable electrode for the production of hydrogen based on the hydrogen evolution reaction (HER) is particularly critical. At present, the use of Pt/C electrodes is under development, but the expensive cost hinders its wide application in the HER field. Herein, a novel porous Ni-Cu-Ti-La2O3 cathode with a porosity of 29.07% was proved to be an excellent substitute for the HER, which was fabricated by vacuum sintering based on powder metallurgy. The hydrogen evolution efficiency is superior to that of commercial 20% Pt/C under pH = 14.1 condition (2.67 mol/L KOH). The HER activity is also close to commercial 20% Pt/C under pH = 0.1 (1 mol/L HCl) and pH = 8.1 (3.34% simulated seawater) conditions and exceeds it after reaching a high potential. Meanwhile, it can achieve good HER stability within 48 h and maintain its HER activity after 1000 continuous cycle electrolysis. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11101 / 11115

页数：15

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