Compensation effects between the apparent activation energy and pre-exponential factor in simple models of electrocatalytic hydrogen evolution

Faraday Discussions 2026 Open access

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Authors: Jan Fingerhut, Rifael Z Snitkoff-Sol, M. Albers, Rafaël E. Vos, Onno van der Heijden, Marc Koper
DOI: 10.1039/d5fd00163c
Cited by: 10
References: 54

Abstract

) relations that mimic intrinsic entropy-enthalpy compensation. Our results demonstrate that compensation effects in electrocatalysis can arise purely from kinetic coupling and site heterogeneity rather than from fundamental thermodynamic scaling, underscoring the need for caution when interpreting temperature-dependent kinetic data. We propose that meaningful mechanistic insight requires measurements on well-defined single-crystal electrodes within potential regions where Tafel slopes remain constant.

Fields of Study & Subjects

Electrocatalysts for Energy Conversion CO2 Reduction Techniques and Catalysts Spectroscopy and Quantum Chemical Studies

Publication details

Journal / source
Faraday Discussions
Publisher
Royal Society of Chemistry (RSC)
Volume
267
Issue
0
Pages
100–117
Publication date
1 January 2026
Language
EN