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Issue 9, 2020
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Intrinsically self-healable, stretchable thermoelectric materials with a large ionic Seebeck effect

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Abstract

While the thermoelectric (TE) generator has attracted tremendous attention, the development of wearable TE generators with stretchability and self-healability has been a significant challenge. Herein, we report intrinsically self-healable and stretchable ternary ionic TE hybrid materials, composed of a conjugated polymer (polyaniline), a non-conjugated anionic polyelectrolyte (poly(2-acrylamido-2-methyl-1-propanesulfonic acid)), and phytic acid. The proposed materials exhibit an excellent ionic figure-of-merit (ZTi) as well as remarkable stretchability (up to ∼750%) and autonomous self-healability without any external stimuli. The ionic TE performance was sustainable under severe deformation (50% strain) and multiple self-healing processes (30 cycles), which is the first demonstration of such performance. The ZTi of the stretchable and self-healable ternary TE hybrids is 1.04. Moreover, a self-healable and stretchable ionic thermoelectric capacitor device is also demonstrated using the ternary TE hybrid.

Graphical abstract: Intrinsically self-healable, stretchable thermoelectric materials with a large ionic Seebeck effect

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Article information


Submitted
29 Nov 2019
Accepted
29 Apr 2020
First published
29 Apr 2020

Energy Environ. Sci., 2020,13, 2915-2923
Article type
Paper

Intrinsically self-healable, stretchable thermoelectric materials with a large ionic Seebeck effect

Z. A. Akbar, J. Jeon and S. Jang, Energy Environ. Sci., 2020, 13, 2915
DOI: 10.1039/C9EE03861B

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