Improved Thermoelectric Performance in TiO2 Incorporated Polyaniline: A Polymer-Based Hybrid Material for Thermoelectric Generators
| Autor: | Ajit Debnath, Kamanashis Sarkar, Biswajit Saha, Krishna Deb |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
chemistry.chemical_classification Materials science Nanocomposite 02 engineering and technology Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound Thermoelectric generator Chemical engineering chemistry Seebeck coefficient 0103 physical sciences Polyaniline Thermoelectric effect Materials Chemistry Electrical and Electronic Engineering 0210 nano-technology Energy source Hybrid material |
| Zdroj: | Journal of Electronic Materials. 49:5028-5036 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-020-08241-4 |
| Popis: | Enhanced thermoelectric performances have been achieved in hybrid nanocomposites of TiO2 incorporated into electrically conductive polyaniline (PANI) through a chemical polymerization process, for next-generation energy sources. Different weight percentages of TiO2 were used in hybrid nanocomposites and their charge transport properties were studied to understand the consequence of TiO2 incorporation in the PANI matrix. Aniline was used as reactant, and ammonium peroxydisulfate as polymerizing agent during synthesis process. The hybrid composites of TiO2 incorporated PANI were studied by using X-ray diffraction pattern, Fourier transform-infrared spectra and scanning electron microscopic images. The thermoelectric characteristics of this PANI-based composite were much improved as compared to pure PANI. The ordered chain structures of PANI, and the decrease of carrier hopping barrier with incorporation of TiO2 nanoparticles in the PANI chain matrix improved the charge carrier conduction and lead towards enhanced thermoelectric properties of these materials. The maximum Seebeck coefficient (S) as recorded 1.767 mV/°C, was fivefold larger as compared with pure PANI. The analysis of results reveal that these hybrid composites are potential candidates for next-generation thermoelectric generators with their light weight, environmentally friendly nature and cost-effectiveness for energy harvesting applications. |
| Databáze: | OpenAIRE |
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