Electrocatalytic Performance of Nitrogen-Doped Graphene for Oxygen Reduction

Nitrogen-doped graphene has emerged as a leading contender for the cathode catalyst in fuel cells and metal–air batteries, offering a metal-free alternative to platinum-based systems. Incorporation of nitrogen atoms into the graphene lattice modifies the local electronic structure, introduces active sites and enhances charge density around defect edges. These changes facilitate the adsorption and activation of molecular oxygen, favour a four-electron transfer pathway to water and lower the overpotential of the oxygen reduction reaction (ORR). High nitrogen content, especially in pyridinic and graphitic configurations, correlates with improved onset potential, greater limiting current density and superior long-term stability under both alkaline and acidic conditions. Advances in synthesis—ranging from thermal evaporation and controlled pyrolysis to plasma treatment—now permit precise tuning of nitrogen species, surface porosity and layer morphology. Alongside experimental electrochemical characterisations, theoretical studies based on density functional theory have elucidated the role of different dopant arrangements and co-doping strategies. Collectively, these developments point to nitrogen-doped graphene as a scalable, low-cost route to high-performance ORR catalysts with global impact in clean-energy conversion.

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Electrocatalytic Performance of Nitrogen-Doped Graphene for Oxygen Reduction publication trend

The graph below shows the total number of articles in electrocatalytic performance of nitrogen-doped graphene for oxygen reduction across all publications each year (not limited to Nature Index journals).

Technical terms

Oxygen reduction reaction (ORR): The electrochemical process in which O₂ is reduced to water (or hydroxide) at the cathode, often rate-limiting in fuel cells and metal–air batteries.

Nitrogen-doped graphene: Graphene sheets into which nitrogen atoms have been incorporated, creating defect sites that alter electronic properties and catalytic behaviour.

Four-electron pathway: An ORR mechanism in which molecular oxygen is reduced directly to water (or OH⁻) via transfer of four electrons, maximising energy efficiency and minimising peroxide formation.

Overpotential: The additional potential beyond the thermodynamic requirement needed to drive the ORR at a given rate, indicative of catalytic activity.

Active site: Specific atomic or molecular configurations on a catalyst surface where reactants adsorb and undergo chemical transformation.

References

1. Synthesis of uniform two-dimensional nitrogen-doped graphene films via thermal evaporation as efficient oxygen reduction catalysts. Energy Materials and Devices (2024).
2. Thermal Stability and Potential Cycling Durability of Nitrogen-Doped Graphene Modified by Metal-Organic Framework for Oxygen Reduction Reactions. Catalysts (2018).
3. First-principles calculation of the electronic properties of graphene clusters doped with nitrogen and boron: Analysis of catalytic activity for the oxygen reduction reaction. Physical Review B (2009).
4. The effect of nitrogen species on the catalytic properties of N-doped graphene. Scientific Reports (2021).