Hydrogen is heralded as the superior alternative to fossil fuels, distinguished by its high energy density, zero carbon emissions, and renewable qualities. Poised to play a crucial role in combating the energy crisis and advancing global carbon neutrality, hydrogen production via electrocatalytic overall water splitting (OWS) represents a focal point of modern research. OWS splits water into hydrogen and oxygen through two primary reactions: the cathodic hydrogen evolution reaction (HER) and the anodic oxygen evolution reaction (OER). The inherently slow kinetics of the OER necessitates high potentials, which increases energy consumption. Innovations in efficient and cost-effective OER electrocatalysts, coupled with strategies like the HER-driven biomass conversion—encompassing reactions like urea oxidation and hydrazine hydrate oxidation—are key to reducing overall energy requirements.

This Research Topic aims to delve into the latest advancements in both conventional and hybrid water splitting technologies. It offers a platform for the discourse on the synthesis, characterization, and application of innovative electrocatalysts tailored for these processes. The inclusion of theoretical analyses of reaction mechanisms underscores a comprehensive approach to understanding catalytic efficiencies and their viability in industrial applications. By exploring these advanced methodologies, this research intends to refine electrocatalyst design and foster the development of scalable, sustainable technologies.

To intensify our exploration in the dynamic sphere of electrocatalysis for OWS and HER-biomass conversions, submissions should ideally focus on the following themes:

• Synthesis and characterization of advanced electrocatalysts.
• Theoretical models and simulations of electrocatalytic reaction mechanisms.
• Integration of biomass conversion processes with OWS.
• Scaling strategies and industrial applications of electrocatalysts.
• Case studies showcasing practical implementations and outcomes.

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Frontiers in Chemistry

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