Simple method to construct three-dimensional porous carbon for electrochemical energy storage

Area of Science:

• Materials Science
• Electrochemistry
• Sustainable Chemistry

Background:

• Developing advanced anode materials is crucial for next-generation energy storage devices.
• Recycling waste materials into functional components offers a sustainable approach to resource management.

Purpose of the Study:

• To synthesize a high-nitrogen-content 3D porous carbon matrix from waste diapers.
• To evaluate the performance of the derived material as an anode for lithium-ion and sodium-ion batteries.

Main Methods:

• Utilizing waste diapers rich in superabsorbent polymer (SAP) to create a nitrogen-enriched carbon matrix.
• Characterizing the material's structure, including porosity, surface area, and layered architecture.
• Testing the material as an anode in half-cells for Li+ and Na+ ion battery applications.

Main Results:

• The synthesized material (NSAPC-W) features an ultrathin layered structure with interconnected pores and a large specific surface area.
• NSAPC-W exhibited excellent ultralong cycling performance and steady rate capability for both Li+ and Na+ ions.
• The material demonstrated high structural stability and efficient ion diffusion pathways.

Conclusions:

• Waste-derived porous carbon materials can serve as high-performance anodes for rechargeable batteries.
• The unique structural features of NSAPC-W enable efficient ion transport and long-term cycling stability.
• This work highlights a promising avenue for sustainable materials in electrochemical energy storage.