Heteroatom-Doped Carbon Materials for Supercapacitor Applications

Heteroatom-doped carbon materials represent a versatile class of electrodes in which non-carbon atoms such as nitrogen, sulfur, boron or phosphorus are introduced into the carbon lattice to tailor electronic structure, surface chemistry and porosity. By adjusting dopant identity, concentration and spatial distribution, researchers achieve enhanced electrical conductivity, wettability and abundant redox-active sites, combining electric double-layer capacitance with fast Faradaic pseudocapacitance. Synthetic strategies include hydrothermal or solvothermal treatments, templating approaches, chemical activation and controlled pyrolysis of biomass or polymeric precursors. The resulting architectures often feature hierarchical porosity spanning micro- to mesopores, optimising ion transport and electrolyte access. These advances yield electrodes that deliver high specific capacitance, rapid charge–discharge capability, long cycle lifetimes and flexible form factors, addressing the growing demand for sustainable, high-power energy storage in portable electronics, electric vehicles and grid stabilisation.

Research from Nature Portfolio

Recent studies have shown that co-doping graphene with nitrogen and sulfur via a one-pot hydrothermal route produces three-dimensional, hierarchically porous frameworks combining macropores and mesopores. The simultaneous incorporation of pyrrolic nitrogen and thiophene-like sulfur species modifies surface chemistry, delivering marked improvements in pseudocapacitance, rate performance and cyclability compared with singly doped analogues. In a complementary approach, a solvothermal single-source precursor method has been developed to generate gram-scale batches of sulfur- and nitrogen-doped graphene under mild conditions. These materials exhibit high heteroatom loading, large specific surface area and defect-rich domains, which translate into enhanced redox activity and promise for high-power supercapacitor applications through synergistic electric double-layer and Faradaic contributions.

Heteroatom-Doped Carbon Materials for Supercapacitor Applications publication trend

The graph below shows the total number of articles in heteroatom-doped carbon materials for supercapacitor applications across all publications each year (not limited to Nature Index journals).

Technical terms

Heteroatom doping: Incorporation of non-carbon elements into a carbon matrix to alter electronic, chemical and electrochemical properties.

Supercapacitor: Electrochemical device that stores energy through electric double-layer formation and fast surface redox reactions, delivering high power density.

Pseudocapacitance: Charge storage arising from rapid, reversible Faradaic redox reactions at or near the electrode surface.

Electric double-layer capacitance (EDLC): Capacitance resulting from electrostatic charge separation at the interface between an electrode and electrolyte.

Specific capacitance: Amount of charge stored per unit mass of electrode material, typically expressed in farads per gram (F g⁻¹).

Hierarchical porosity: Pore structure containing multiple size regimes (micro-, meso- and macropores) that optimises ion transport and surface accessibility.

References

1. Natural polymers as sustainable precursors for scalable production of N/SOx doped carbon material enabling high‐performance supercapacitors. EcoMat (2023).
2. Heteroatom-doped graphene materials: syntheses, properties and applications. Chemical Society Reviews (2014).
3. Interaction between Nitrogen and Sulfur in Co-Doped Graphene and Synergetic Effect in Supercapacitor. Scientific Reports (2015).
4. Single Source Precursor-based Solvothermal Synthesis of Heteroatom-doped Graphene and Its Energy Storage and Conversion Applications. Scientific Reports (2014).
5. Effects of nitrogen, sulphur, and temperature treatments on the spectral, structural, and electrochemical characteristics of graphene oxide for energy storage applications. Carbon Trends (2023).
6. Transforming Disposed Face Masks into S‐Doped Carbon Nanofibers for High Performance Supercapacitors. ChemElectroChem (2024).