Impact of different metallic forms of nickel on hydrogen evolution reaction

被引：2

作者：

Lahiri, Abhishek ^{[1
]}

Lakshya, Annu Kumar ^{[2
]}

Guan, Shaoliang ^{[3
,4
]}

Anguilano, Lorna ^{[5
]}

Chowdhury, Anirban ^{[2
]}

机构：

[1] Brunel Univ London, Dept Chem Engn, Kingston lane, Uxbridge UB8 3PH, England

[2] Indian Inst Technol Patna, MAPS Mat Process Struct Correlat Lab, Met & Mat Engn, Patna, Bihar, India

[3] Cardiff Univ, Sch Chem, Cardiff CF10 3AT, Wales

[4] Res Complex Harwell, Rutherford Appleton Lab, HarwellXPS, Didcot OX11 0FA, Oxfordshire, England

[5] Brunel Univ London, Coll Engn Design & Phys Sci, Expt Tech Ctr, Kingston Lane, London UB8 3PH, England

来源：

SCRIPTA MATERIALIA | 2022年 / 218卷

关键词：

Hydrogen evolution reaction; Lattice strain; Nickel; Alkaline solution; Sea water; ALKALINE-SOLUTION; STRAIN CONTROL; KINETICS; ELECTRODE;

D O I：

10.1016/j.scriptamat.2022.114829

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, we show the influence of strain in two different forms (plate and foil) of nickel for hydrogen evolution reaction (HER) in alkaline solution and 3.5% NaCl aqueous solution. The presence of tensile strain in nickel foil lowers the overpotential by about 10 mV to reach a current density of 10 mA cm(-2) and improves the reaction kinetics of HER in alkaline solution. The Tafel slope showed a significant change in the strained nickel (i. e., in Ni foil) which gave a value of 111 mV dec(-1) compared to unstrained nickel (Ni plate) which was found to be 151 mV dec(-1), thus indicating a change in reaction mechanism. Compared to alkaline solution, the effect of strain becomes less pronounced in NaCl solution which can be attributed to Cl- adsorption on the electrode, thereby reducing its catalytic activity.

引用

页数：5

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