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Issue 9, 2016
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Flexible low-grade energy utilization devices based on high-performance thermoelectric polyaniline/tellurium nanorod hybrid films

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Abstract

With the growing global energy crisis, new methods of energy development and utilization have become the main solutions to energy issues. Solution based polymer thermoelectric (TE) generation technologies provide a low-cost and eco-friendly means of direct energy conversion from low-grade heat to electricity. By integrating high Seebeck coefficient tellurium nanorods with the conducting polymer polyaniline (PANI) to form PANI/Te hybrid films, well-matched nanoscale interfaces improve carrier transport properties yet keep the thermal conductivity at a rather low level of 0.2 W m−1 K−1. Therefore, the originally mutual restricted parameters (electrical conductivity, Seebeck coefficient and thermal conductivity) finally reach an increase in the ZT value. The maximum power factor of the PANI/Te (70 wt%) composite film reached 105 μW m−1 K−2 at room temperature and further reached up to 146 μW m−1 K−2 at 463 K, and the ZT value increased from 0.156 at room temperature to 0.223 at 390 K, which are the highest values reported so far for PANI based TE materials. A screen-printing process was employed to fabricate in-plane power generation devices based on the high-performance PANI/Te hybrid films. A prototype device with 10 legs of PANI/Te–Ag could provide a maximum output voltage and output power of 29.9 mV and 0.73 μW, respectively at temperature gradient 40 K. The results evidently demonstrate a promising and economic route for conducting polymers to be applied in low-grade energy conversion utilization.

Graphical abstract: Flexible low-grade energy utilization devices based on high-performance thermoelectric polyaniline/tellurium nanorod hybrid films

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Publication details

The article was received on 04 Feb 2016, accepted on 07 Feb 2016 and first published on 09 Feb 2016


Article type: Paper
DOI: 10.1039/C6TA01140C
Citation: J. Mater. Chem. A, 2016,4, 3554-3559
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    Flexible low-grade energy utilization devices based on high-performance thermoelectric polyaniline/tellurium nanorod hybrid films

    Y. Wang, S. M. Zhang and Y. Deng, J. Mater. Chem. A, 2016, 4, 3554
    DOI: 10.1039/C6TA01140C

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