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https://hdl.handle.net/20.500.14279/14095
Τίτλος: | Highly Stretchable and Air-Stable PEDOT:PSS/Ionic Liquid Composites for Efficient Organic Thermoelectrics | Συγγραφείς: | Kee, Seyoung Kim, Hyunho Neophytou, Marios Emwas, Abdul Hamid Baran, Derya Paleti, Sri Harish Kumar El Labban, Abdulrahman Alshareef, Husam N. |
Major Field of Science: | Engineering and Technology | Field Category: | Mechanical Engineering;Materials Engineering | Λέξεις-κλειδιά: | Deformation;Ionic liquids;Tensile strain;Thermoelectric energy conversion | Ημερομηνία Έκδοσης: | 14-Μαΐ-2019 | Πηγή: | Chemistry of Materials, 2019, vol. 31, no. 9, pp. 3519-3526 | Volume: | 31 | Issue: | 9 | Start page: | 3519 | End page: | 3526 | Περιοδικό: | Chemistry of Materials | Περίληψη: | 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 μV 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 (ϵ) up to 70% and repetitive stretching cycles with 30% ϵ 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. | ISSN: | 08974756 | DOI: | 10.1021/acs.chemmater.9b00819 | Rights: | © American Chemical Society | Type: | Article | Affiliation: | King Abdullah University of Science and Technology Cyprus University of Technology |
Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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