Electrocatalytic Hydrogen Production Using Carbon-Based Materials

Electrocatalytic hydrogen production employs carbon-based materials as catalysts to drive the hydrogen evolution reaction (HER) at the cathode of water-splitting devices. Owing to their natural abundance, tunable electronic properties and structural versatility, carbon materials such as graphene, carbon nanotubes and porous biomass-derived carbons offer a cost-effective alternative to precious metals. Tailoring defect sites, edge structures and heteroatom dopants (for example nitrogen, sulfur or phosphorus) modulates the local electronic density and adsorption energies of reaction intermediates, thereby lowering overpotentials and enhancing reaction rates. Composite designs that integrate carbon frameworks with transition-metal compounds or single-atom centres further enrich the diversity of active motifs and improve long-term operational stability. Advances in nanoscale architecture—ranging from two-dimensional sheets to three-dimensional foams or quantum dots—provide high surface area and efficient mass transport, while maintaining mechanical robustness for commercial electrode assemblies. Such developments are pivotal in progressing towards a sustainable hydrogen economy in which renewable electricity sources supply the energy for green hydrogen generation at scale.

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Electrocatalytic Hydrogen Production Using Carbon-Based Materials publication trend

The graph below shows the total number of articles in electrocatalytic hydrogen production using carbon-based materials across all publications each year (not limited to Nature Index journals).

Technical terms

Hydrogen evolution reaction (HER): The electrochemical reduction of protons to hydrogen gas at the cathode during water splitting.

Overpotential: The extra voltage beyond the thermodynamic requirement needed to drive an electrochemical reaction at a given current density.

Tafel slope: A parameter expressing the change in overpotential per decade increase in current density, used to characterise reaction kinetics and rate-determining steps.

Heteroatom doping: The intentional incorporation of foreign atoms (e.g. N, S, P) into a carbon lattice to alter its electronic and catalytic properties.

Electrochemically active surface area (ECSA): The portion of a catalyst’s surface accessible to reactants, directly influencing the observed current response.

References

1. Unveiling the structural transformation and activity origin of heteroatom-doped carbons for hydrogen evolution. Proceedings of the National Academy of Sciences of the United States of America (2023).
2. Recent Progress in Graphene-Based Electrocatalysts for Hydrogen Evolution Reaction. Nanomaterials (2022).
3. Nitrogen Functionalization of CVD Grown Three-Dimensional Graphene Foam for Hydrogen Evolution Reactions in Alkaline Media. Materials (2021).
4. Biowaste-Derived Heteroatom-Doped Porous Carbon as a Sustainable Electrocatalyst for Hydrogen Evolution Reaction. Catalysts (2023).