Intrinsically self-healable, stretchable thermoelectric materials with a large ionic Seebeck effect,Energy & Environmental Science

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Intrinsically self-healable, stretchable thermoelectric materials with a large ionic Seebeck effect
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-04-29 , DOI: 10.1039/c9ee03861b
Zico Alaia Akbar _{1,

2,

3,

4,

5} , Ju-Won Jeon _{4,

5,

6,

7} , Sung-Yeon Jang _{1,

2,

3,

4}

Affiliation

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 (ZT_i) 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 ZT_i 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.

中文翻译：

具有大离子塞贝克效应的本能自修复，可拉伸的热电材料

尽管热电（TE）发电机已经引起了极大的关注，但是具有可拉伸性和自愈性的可穿戴式TE发电机的开发却是一个巨大的挑战。在这里，我们报告本质上可自我修复和可拉伸的三元离子TE杂化材料，它由共轭聚合物（聚苯胺），非共轭阴离子聚电解质（聚（2-丙烯酰胺基-2-甲基-1-丙磺酸））和植酸。拟议的材料表现出优异的离子品质因数（ZT _i）以及出色的拉伸性（高达750％）和自主的自我修复能力，而无需任何外部刺激。在严重变形（50％应变）和多次自我修复过程（30个循环）下，离子TE性能是可持续的，这是此类性能的首次证明。可拉伸和自修复的三元TE杂化物的ZT _i为1.04。此外，还使用三元TE混合体展示了可自我修复且可拉伸的离子型热电电容器。

更新日期：2020-04-29

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