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.
Original language | English |
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Pages (from-to) | 2915-2923 |
Number of pages | 9 |
Journal | Energy and Environmental Science |
Volume | 13 |
Issue number | 9 |
DOIs | |
Publication status | Published - Sept 2020 |