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Title: | Impact of different metallic forms of nickel on hydrogen evolution reaction |
Authors: | Lahiri, A Lakshya, AK Guan, S Anguilano, L Chowdhury, A |
Keywords: | hydrogen evolution reaction;lattice strain;nickel;alkaline solution;sea water |
Issue Date: | 25-May-2022 |
Publisher: | Elsevier |
Citation: | Lahiri, A. et al. (2022) 'Impact of different metallic forms of nickel on hydrogen evolution reaction', Scripta Materialia, 218, 114829, pp. 1 - 5. doi: 10.1016/j.scriptamat.2022.114829. |
Abstract: | 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. |
Description: | Supplementary materials are available online at: https://www.sciencedirect.com/science/article/pii/S1359646222003256#sec0002 . |
URI: | https://bura.brunel.ac.uk/handle/2438/29920 |
DOI: | https://doi.org/10.1016/j.scriptamat.2022.114829 |
ISSN: | 1359-6462 |
Other Identifiers: | ORCiD: Abhishek Lahiri https://orcid.org/0000-0001-8264-9169 ORCiD: Annu Kumar Lakshya https://orcid.org/0000-0002-7365-9098 ORCiD: Shaoliang Guan https://orcid.org/0000-0002-0608-6584 ORCiD: Lorna Anguilano https://orcid.org/0000-0002-3426-4157 ORCiD: Anirban Chowdhury https://orcid.org/0000-0003-2360-4766 114829 |
Appears in Collections: | The Experimental Techniques Centre Dept of Chemical Engineering Research Papers |
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