Nitrogen-enriched micro-mesoporous carbon derived from polymers organic frameworks for high-performance capacitive...

Area of Science:

• Materials Science
• Electrochemistry
• Environmental Science

Background:

• Nitrogenization enhances capacitive deionization (CDI) performance in porous carbon materials.
• Polymer organic frameworks with heteroatom doping are ideal precursors for high-performance CDI electrodes due to their ordered structure and stability.

Purpose of the Study:

• To fabricate nitrogen-enriched micro-mesoporous carbon (NMC) electrodes via carbonization of Schiff base network-1.
• To evaluate the effect of carbonization temperature on NMC properties and CDI performance.

Main Methods:

• Schiff base network-1 was carbonized at 500, 600, and 700°C to produce NMCs.
• Characterization included SEM, FTIR, XRD, N2 adsorption-desorption, contact angle, CV, and EIS.
• Electrochemical performance was assessed for CDI applications.

Main Results:

• The NMC carbonized at 600°C exhibited the highest specific capacitance (152.33 F/g) and electrosorption capacity (25.53 mg/g).
• This optimal performance is attributed to its high nitrogen content (15.57%) and surface area (312 m²/g).

Conclusions:

• Nitrogen-enriched micro-mesoporous carbon derived from Schiff base network-1 is a promising electrode material for CDI.
• Optimized carbonization temperature is crucial for maximizing CDI performance in these materials for desalination.