Graphitic Carbon Nitride: A Rising Star Electrode Material for Supercapacitors

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Rising global energy demand necessitates supercapacitors (SCs) with both high power and energy density.
• Advanced electrode materials are key to developing next-generation SCs.
• Two-dimensional graphitic carbon nitride (g-C3N4) shows promise due to its unique structure and properties.

Purpose of the Study:

• To comprehensively review g-C3N4-based materials for supercapacitor applications.
• To analyze synthesis methods and their correlation with electrochemical performance.
• To categorize strategies for enhancing g-C3N4 performance.

Main Methods:

• Systematic analysis of g-C3N4 crystal structure, physicochemical properties, and synthesis.
• Comparative analysis of pristine g-C3N4, heteroatom doping, and composite construction.
• Emphasis on composite performance with conductive polymers, TMOs/TMSs, graphene, and MXenes.

Main Results:

• g-C3N4 exhibits tunable electronic properties and facile synthesis.
• Composite strategies significantly enhance conductivity, stability, and charge storage capacity.
• Synergistic effects in composites are crucial for superior electrochemical performance.

Conclusions:

• g-C3N4-based materials, particularly composites, offer significant potential for high-performance SCs.
• Further research should focus on rational design of g-C3N4 composites.
• Addressing current challenges will unlock the full potential of g-C3N4 in energy storage.