Simultaneous hydrogen generation and organic oxidation in low-temperature electrolyzers

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. • Electrolysis of biomass derivatives is a promising method to reduce the energy required for the process while also lowering the cost of hydrogen production. • During the electrolysis of biomass derivatives, CO 2 can be produced. However, it can be easily captured and utilized in other industrial processes. • For the electrolysis of biomass derivatives to become competitive with the commonly used but expensive water electrolysis, further research and development are necessary.