Polymer gels with tunable ionic Seebeck coefficient for ultra-sensitive printed thermopiles
Artikel i vetenskaplig tidskrift, 2019
Measuring temperature and heat flux is important for regulating any physical, chemical, and biological processes. Traditional thermopiles can provide accurate and stable temperature reading but they are based on brittle inorganic materials with low Seebeck coefficient, and are difficult to manufacture over large areas. Recently, polymer electrolytes have been proposed for thermoelectric applications because of their giant ionic Seebeck coefficient, high flexibility and ease of manufacturing. However, the materials reported to date have positive Seebeck coefficients, hampering the design of ultra-sensitive ionic thermopiles. Here we report an “ambipolar” ionic polymer gel with giant negative ionic Seebeck coefficient. The latter can be tuned from negative to positive by adjusting the gel composition. We show that the ion-polymer matrix interaction is crucial to control the sign and magnitude of the ionic Seebeck coefficient. The ambipolar gel can be easily screen printed, enabling large-area device manufacturing at low cost.
Författare
Dan Zhao
Linköpings universitet
Anna Martinelli
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Andreas Willfahrt
Hochschule der Medien
Linköpings universitet
Thomas Fischer
Hochschule der Medien
Diana Bernin
Kemisk apparatteknik
Zia Ullah Khan
Linköpings universitet
Maryam Shahi
University of Kentucky
Joseph Brill
University of Kentucky
Magnus P. Jonsson
Linköpings universitet
S. Fabiano
Linköpings universitet
X. Crispin
Linköpings universitet
Nature Communications
2041-1723 (ISSN) 20411723 (eISSN)
Vol. 10 1 1093Ämneskategorier
Polymerkemi
Fysikalisk kemi
Den kondenserade materiens fysik
DOI
10.1038/s41467-019-08930-7
PubMed
30842422