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Related Experiment Video

Updated: Jun 17, 2026

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Self-healable polymer complex with a giant ionic thermoelectric effect.

Dong-Hu Kim1, Zico Alaia Akbar1, Yoga Trianzar Malik2

  • 1School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.

Nature Communications
|June 5, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a stretchable, self-healing polymer with high ionic thermoelectric (iTE) properties. This new material, PEDOT:PAAMPSA:PA, shows promise for self-powering applications.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Energy Harvesting

Background:

  • Ionic thermoelectric (iTE) materials offer a sustainable energy harvesting solution.
  • Developing flexible and durable iTE materials remains a significant challenge.

Purpose of the Study:

  • To synthesize a novel stretchable and self-healable polymer with enhanced ionic thermoelectric properties.
  • To investigate the structure-property relationships governing the iTE performance and mechanical robustness.

Main Methods:

  • Synthesis of PEDOT:PAAMPSA:PA polymer.
  • Optimization of ion carrier concentration, diffusion coefficient, and entropy.
  • Mechanical testing including stretching and self-healing cycles.
  • Fabrication and characterization of an ionic thermoelectric capacitor (ITEC) device.

Main Results:

  • Achieved an ionic figure-of-merit of 12.3 at 70% relative humidity.
  • Demonstrated high stretchability and self-healing capabilities due to dynamic polymer interactions.
  • Maintained iTE properties after 30 self-healing and 50 stretching cycles.
  • ITEC device achieved maximum power output of 4.59 μW‧m-2 and energy density of 1.95 mJ‧m-2.
  • A 9-pair ITEC module generated 0.37 V‧K-1 with a power output of 0.21 μW‧m-2 at 80% RH.

Conclusions:

  • PEDOT:PAAMPSA:PA exhibits excellent ionic thermoelectric performance combined with mechanical resilience.
  • The material's stability under mechanical stress highlights its potential for practical applications.
  • This work paves the way for self-powered devices utilizing flexible and self-healing thermoelectric materials.