Sono-Cavitation and Nebulization-Based Synthesis of Conjugated Microporous Polymers for Energy Storage Applications

Area of Science:

• Materials Science
• Polymer Chemistry
• Energy Storage

Background:

• Conjugated microporous polymers (CMPs) offer potential for energy storage due to their unique structures.
• Fabricating CMP films for practical use faces processing challenges.

Purpose of the Study:

• To develop an effective and scalable method for synthesizing nano- and microstructured CMP films.
• To investigate the impact of ultrasonic frequency on CMP film properties.
• To fabricate high-performance electrodes and supercapacitors using CMP films.

Main Methods:

• Combined sono-cavitation and nebulization synthesis (SNS) for CMP film fabrication.
• Oxidative C-C coupling polymerization of monomer precursors.
• Layer-by-layer deposition of CMP films and carbon nanotubes (CNTs) for electrode preparation.

Main Results:

• SNS enables scalable synthesis of microporous, redox-active CMP films.
• Higher ultrasonic frequency (180 kHz) improved reaction yields by ~30% and surface area (336-542 m²/g).
• CMP/CNT electrodes exhibited high conductivity, and asymmetric supercapacitors achieved 477 F/g capacitance with 94.4% stability after 10,000 cycles.

Conclusions:

• SNS is a viable method for producing advanced CMP materials.
• Ultrasonic frequency is a critical parameter for optimizing CMP synthesis.
• The developed CMP/CNT electrodes and supercapacitors show promise for next-generation energy storage devices.