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Ionic Thermoelectric Paper


Ionic thermoelectric materials, such as polyelectrolyte like polystyrene sulfonate sodium (PSSNa), constitute a new class of material attracting interest due to their large Seebeck coefficient and the possibility to be used in ionic thermoelectric supercapacitors (ITESCs) and field effect transistors. However pure polyelectrolyte membranes are not robust neither flexible. In this article, we demonstrate the preparation of ionic thermoelectric paper by a simple, scalable and cost-effective method. After composite with nanofibrillated cellulose (NFC), the resulting NFC-PSSNa paper is flexible and mechanically robust; which is desirable of using roll-to-roll processes. The robust thermoelectric paper NFC-PSSNa combines high ionic conductivity (9 mS/cm), high ionic Seebeck coefficient (8.4 mV/K) and low thermal conductivity (0.75 Wm-1K-1), resulting in overall figure-of-merit of 0.025 at room temperature slightly better than the PSSNa. Enabling flexibility and robustness by compositing with cellulose constitutes an advance for scaling up the manufacturing of ionic thermoelectric supercapacitors; but also enables new applications for conformable thermoelectric devices and flexible electronics.

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Publication details

The article was received on 12 Apr 2017, accepted on 29 Jun 2017 and first published on 30 Jun 2017

Article type: Paper
DOI: 10.1039/C7TA03196C
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Ionic Thermoelectric Paper

    F. Jiao, A. Naderi, D. Zhao, J. Schlueter, M. Shahi, J. Sundström, H. Granberg, J. Edberg, U. Ail, J. W. Brill, T. Lindstrom, M. Berggren and X. Crispin, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA03196C

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