Simultaneous hydrogen generation and organic oxidation in low-temperature electrolyzers

Zuzanna Bojarska, Maria Jarząbek Karnas, Agata Godula-Jopek, Sławomir Mandrek and Łukasz Makowski

Applied Energy, 2025, vol. 389, issue C, No S0306261925004271

Abstract: Low-temperature electrolyzers play an essential role in various electrochemical and industrial processes, particularly in sustainable energy storage and conversion. Traditionally, the anodic reaction is oxygen evolution, which demands high working potentials and involves significant operational costs. This review explores a compelling approach to mitigate these challenges by using alternative fuels. Through a comprehensive review of the literature, the subject of which was the electrolysis of alcohols, amines, and biomass derivatives. This study explains the potential of integrating non‑oxygen-evolving reactions with hydrogen evolution reactions to mitigate the drawbacks associated with conventional electrolysis. By diversifying the electrochemical approaches, alternative reactions offer the prospect of lowering the working potential, thereby reducing the energy input and overall cost. Furthermore, strategically selecting catalysts can enhance reaction kinetics and improve the efficiency of hydrogen production. This review underscores the importance of considering technical performance and economic viability in the design and operation of electrolyzer systems.

Keywords: Proton exchange membrane electrolysis; Anion exchange membrane electrolysis; Oxygen evolution reaction; Hydrogen evolution reaction; Organic electrooxidation (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2025.125697

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