Self-Healable and Robust PE/PEDOT/SWCNT Thermoelectric Composites

Area of Science:

• Materials Science
• Energy Harvesting
• Flexible Electronics

Background:

• Organic thermoelectric (TE) materials are crucial for energy recycling in flexible wearable electronics.
• Material damage from frequent movements limits the application of current TE devices.

Purpose of the Study:

• To develop robust and efficient organic TE materials with self-healing capabilities.
• To enhance the performance and durability of TE composites for practical applications.

Main Methods:

• Compositing polyethylene (PE) with poly(3,4-ethylenedioxythiophene) and single-walled carbon nanotubes.
• Creating a unique conductive penetration network within the composite structure.

Main Results:

• Achieved a maximal room-temperature power factor of 158.81 μW m^-1 K^-2 with 20 wt % PE.
• Reduced out-of-plane thermal conductivity and imparted self-healing and good mechanical properties.
• Demonstrated a universal compounding method and penetration structure.

Conclusions:

• The developed PE-based TE composites offer a promising solution for low-grade waste heat utilization.
• The materials exhibit excellent cost-effectiveness and comprehensive properties for wearable electronics.
• The findings provide a universal approach for designing advanced TE composites.