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Influence of Operating Conditions on the Hydrogen Evolution Activity of Ni-Based Catalysts in Alkaline Electrolytes Full article

Journal Electrochimica Acta
ISSN: 0013-4686 , E-ISSN: 1873-3859
Output data Year: 2026, Volume: 553, Article number : 148240, Pages count : 12 DOI: 10.1016/j.electacta.2026.148240
Tags Alkaline electrolyte, pH and cation effect, Hydrogen evolution reaction (HER), Ni-based catalysts, Stability
Authors Kuznetsov Aleksey N. 1,2 , Cherstiouk Olga V. 1,2 , Simonov Pavel A. 1,2 , Kvon Ren I. 1 , Kozlov Denis V. 1,2 , Oshchepkov Alexandr G. 1
Affiliations
1 Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
2 Novosibirsk State University, 630090 Novosibirsk, Russia

Funding (1)

1 Ministry of Science and Higher Education of the Russian Federation FWUR-2024-0036

Abstract: The development of active and durable hydrogen evolution reaction (HER) catalysts based on non-noble metals is essential for cost-effective alkaline water electrolysis. Yet, their benchmarking is often complicated by poorly controlled operating conditions. Here, we investigate carbon-supported Ni, NiCu, and NiMo nanoparticles for the HER using rotating disk electrode (RDE) measurements, with particular attention to the effects of catalyst loading, pH, and electrolyte composition. We show that OH- concentration, cation effects, and trace metal impurities significantly alter the electrochemical behavior of Ni-based catalysts, and, most importantly, their HER performance. Mass-normalized currents are identified as more reliable benchmarking metrics than overpotentials at fixed geometric current densities. Stability tests performed on planar electrodes reveal that decay in HER performance is governed by impurity metal deposition and alloying-metal dissolution, as well as changes in the Ni/NiOx balance. Overall, the results highlight both the potential of Ni-based catalysts as alternatives to Pt and the critical importance of carefully controlled operating conditions for a meaningful evaluation of HER activity and durability.
Cite: Kuznetsov A.N. , Cherstiouk O.V. , Simonov P.A. , Kvon R.I. , Kozlov D.V. , Oshchepkov A.G.
Influence of Operating Conditions on the Hydrogen Evolution Activity of Ni-Based Catalysts in Alkaline Electrolytes
Electrochimica Acta. 2026. V.553. 148240 :1-12. DOI: 10.1016/j.electacta.2026.148240 OpenAlex
Dates:
Submitted: Oct 30, 2025
Accepted: Jan 15, 2026
Published online: Jan 16, 2026
Published print: Mar 1, 2026
Identifiers:
OpenAlex: W7124454582
Citing: Пока нет цитирований
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