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Architecture-Interface Co-Design of g-C3N4 Driven Dry Thick Cathodes Enabling Fast Li-Ion Transport
Hye Ji Eun1,2, Jinkyu Park1, Garam Lee1,3
1Department of Advanced Battery Research Center, Korea Research Institute of Chemical Technology (KRICT) Daejeon Republic of Korea.
Exploration (Beijing, China)
|August 13, 2026
Summary
Researchers developed a new strategy for thick-film lithium-ion battery cathodes using nanostructured graphitic carbon nitride (g-C3N4). This additive enhances ion transport and wettability, significantly boosting battery performance and stability.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Thick-film electrodes are crucial for high-energy-density lithium-ion batteries.
- Ionic transport limitations hinder the performance of these advanced battery designs.
Purpose of the Study:
- To develop a novel strategy for solvent-free dry thick cathodes.
- To introduce nanostructured graphitic carbon nitride (g-C3N4) as an ion-transport promoter.
- To enhance electrolyte wettability and Li+ transport kinetics in battery electrodes.
Main Methods:
- Architecture-interface co-design strategy for dry electrodes.
- Utilizing nanostructured graphitic carbon nitride (g-C3N4) as a cathode additive.
- Employing 3D X-ray nanotomography and pore network modeling for analysis.
- Investigating ionic-mechanical properties and electrode architecture optimization.
Main Results:
- g-C3N4 demonstrated a dual mechanism for enhancing ion transport via electrolyte wettability and Li-N coordination.
- Single-layer dry electrodes showed a 165.9% capacity increase at 3C and improved cyclic stability.
- Dual-layer electrodes achieved a 62.5% capacity gain at 1C.
- Significant improvements in power density and capacity retention were observed.
Conclusions:
- The developed strategy offers a scalable and sustainable pathway for high-performance dense electrodes.
- Nanostructured g-C3N4 is effective in overcoming ionic transport limitations in thick-film cathodes.
- This research paves the way for next-generation lithium-ion batteries with enhanced energy density and performance.
