Highly Tough, Flexible Poly(vinyl alcohol): Liquid Metal Composite Electrodes for Electric Heater 


Vol. 61,  No. 4, pp. 217-223, Aug.  2024
10.12772/TSE.2024.61.217


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  Abstract

Flexible electrodes are an essential component for wearable electronic devices and heaters, which can lead to applications such as heating textile, on-body integrated thermotherapy, and heat-driven soft actuators. The electrodes should be mechanically flexible and highly conductive for efficient heat generation, and avoid toxic materials for human-compatibility. Herein, we developed highly conductive composite films with nontoxic components of poly(vinyl alcohol) (PVA) matrix and liquid metal eutectic galliumindium (EGaIn) fillers. The PVA:EGaIn composite film was processed by simple solution mixing and casting. It is revealed that optimal drying condition is necessitated to develop electrically conductive percolation paths through spontaneous sedimentation of EGaIn microparticles, which is critical for electrode performance. The resultant PVA:EGaIn film exhibited high electrical conductivity of 563 S/cm, Joule-heating temperature up to 82.4 °C, and excellent flexibility and toughness that can maintain electrical conductivity over 1,000 bending cycles. Our study suggests a simple route for developing mechanically durable electrodes that can be extensively applied for flexible and wearable electronic devices.

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  Cite this article

[IEEE Style]

C. Park and B. Jeong, "Highly Tough, Flexible Poly(vinyl alcohol): Liquid Metal Composite Electrodes for Electric Heater," Textile Science and Engineering, vol. 61, no. 4, pp. 217-223, 2024. DOI: 10.12772/TSE.2024.61.217.

[ACM Style]

Chanwoo Park and Beomjin Jeong. 2024. Highly Tough, Flexible Poly(vinyl alcohol): Liquid Metal Composite Electrodes for Electric Heater. Textile Science and Engineering, 61, 4, (2024), 217-223. DOI: 10.12772/TSE.2024.61.217.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)