Journal article
Highly Stretchable and Air-Stable PEDOT:PSS/Ionic Liquid Composites for Efficient Organic Thermoelectrics
Chemistry of materials, v 31(9), pp 3519-3526
14 May 2019
Abstract
Thermoelectric (TE) generators that are capable of providing sustainable energy conversion under dynamic mechanical stresses have been explored for realizing autonomous wearable electronics. However, finding extremely deformable, efficient, and air-stable TE materials is still a major challenge. Here, we report highly stretchable and efficient organic TE materials from aqueous composites of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) and ionic liquids (ILs). In this composite, ILs simultaneously enhance the Seebeck coefficient and electrical conductivity of PEDOT:PSS (up to 35 mu V K-1 and 538 S cm(-1), respectively) by controlling its oxidation level and nanostructure. Moreover, the resulting fibrous structure with IL-assisted soft domains leads to outstanding mechanical deformability and durability, enabling that the PEDOT:PSS/IL films simply coated on elastomeric substrates maintain the TE functionality under tensile strain (epsilon) up to 70% and repetitive stretching cycles with 30% epsilon without severe degradation in TE performance. Furthermore, we also demonstrate the long-term TE stability of PEDOT:PSS/IL composites maintaining >80% of the initial performance after 10 days under ambient conditions. Our finding proves the potential of this novel composite as a stretchable and air-stable organic TE material.
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Details
- Title
- Highly Stretchable and Air-Stable PEDOT:PSS/Ionic Liquid Composites for Efficient Organic Thermoelectrics
- Creators
- Seyoung Kee - King Abdullah University of Science and TechnologyHyunho Kim - King Abdullah University of Science and TechnologySri Harish Kumar Paleti - King Abdullah University of Science and TechnologyAbdulrahman El Labban - King Abdullah University of Science and TechnologyMarios Neophytou - King Abdullah University of Science and TechnologyAbdul-Hamid Emwas - KAUST, KAUST Core Labs, Thuwal 239556900, Saudi ArabiaHusam N. Alshareef - King Abdullah University of Science and TechnologyDerya Baran - King Abdullah University of Science and Technology
- Publication Details
- Chemistry of materials, v 31(9), pp 3519-3526
- Publisher
- ACS Publications
- Number of pages
- 8
- Grant note
- King Abdullah University of Science and Technology (KAUST); King Abdullah University of Science & Technology KAUST Solar Center Competitive Fund (CCF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000468242300049
- Scopus ID
- 2-s2.0-85064992072
- Other Identifier
- 991022059814604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary