The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization
Recently, polymers have been attracted great attention because of their thermoelectric materials’ excellent mechanical properties, specifically their cost-effectiveness and scalability at the industrial level. In this study, the electropolymerization conditions (applied potential and deposition time...
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MDPI AG
2022-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/24/4430 |
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| author | Cristina V. Manzano Olga Caballero-Calero Aída Serrano Pedro M. Resende Marisol Martín-González |
| author_facet | Cristina V. Manzano Olga Caballero-Calero Aída Serrano Pedro M. Resende Marisol Martín-González |
| author_sort | Cristina V. Manzano |
| collection | DOAJ |
| description | Recently, polymers have been attracted great attention because of their thermoelectric materials’ excellent mechanical properties, specifically their cost-effectiveness and scalability at the industrial level. In this study, the electropolymerization conditions (applied potential and deposition time) of PEDOT films were investigated to improve their thermoelectric properties. The morphology and Raman spectroscopy of the PEDOT films were analyzed according to their applied potential and deposition time. The best thermoelectric properties were found in films grown at 1.3 V for 10 min, with an electrical conductivity of 158 ± 8 S/cm, a Seebeck coefficient of 33 ± 1 µV/K, and a power factor of 17 ± 2 µW/K·m<sup>2</sup>. This power factor value is three times higher than the value reported in the literature for electropolymerized PEDOT films in acetonitrile using lithium perchlorate as a counter-ion. The thermal conductivity was found to be (1.3 ± 0.3) × 10<sup>−1</sup> W/m·K. The highest figure of merit obtained at room temperature was (3.9 ± 1.0) × 10<sup>−2</sup> using lithium perchlorate as a counter-ion. In addition, three-dimensional (3D) PEDOT nanonetworks were electropolymerized inside 3D anodic aluminum oxide (3D AAO), obtaining lower values in their thermoelectric properties. |
| first_indexed | 2024-03-09T16:01:13Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T16:01:13Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-540150ed9435469d9356f4e9f2464a072023-11-24T17:04:13ZengMDPI AGNanomaterials2079-49912022-12-011224443010.3390/nano12244430The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by ElectropolymerizationCristina V. Manzano0Olga Caballero-Calero1Aída Serrano2Pedro M. Resende3Marisol Martín-González4Instituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, E-28760 Tres Cantos, SpainInstituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, E-28760 Tres Cantos, SpainDepartamento de Electrocerámica, Instituto de Cerámica y Vidrio, CSIC, Kelsen 5, E-28049 Madrid, SpainInstituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, E-28760 Tres Cantos, SpainInstituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, E-28760 Tres Cantos, SpainRecently, polymers have been attracted great attention because of their thermoelectric materials’ excellent mechanical properties, specifically their cost-effectiveness and scalability at the industrial level. In this study, the electropolymerization conditions (applied potential and deposition time) of PEDOT films were investigated to improve their thermoelectric properties. The morphology and Raman spectroscopy of the PEDOT films were analyzed according to their applied potential and deposition time. The best thermoelectric properties were found in films grown at 1.3 V for 10 min, with an electrical conductivity of 158 ± 8 S/cm, a Seebeck coefficient of 33 ± 1 µV/K, and a power factor of 17 ± 2 µW/K·m<sup>2</sup>. This power factor value is three times higher than the value reported in the literature for electropolymerized PEDOT films in acetonitrile using lithium perchlorate as a counter-ion. The thermal conductivity was found to be (1.3 ± 0.3) × 10<sup>−1</sup> W/m·K. The highest figure of merit obtained at room temperature was (3.9 ± 1.0) × 10<sup>−2</sup> using lithium perchlorate as a counter-ion. In addition, three-dimensional (3D) PEDOT nanonetworks were electropolymerized inside 3D anodic aluminum oxide (3D AAO), obtaining lower values in their thermoelectric properties.https://www.mdpi.com/2079-4991/12/24/4430PEDOTfilms3D nanonetworkselectropolymerizationthermoelectric properties |
| spellingShingle | Cristina V. Manzano Olga Caballero-Calero Aída Serrano Pedro M. Resende Marisol Martín-González The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization Nanomaterials PEDOT films 3D nanonetworks electropolymerization thermoelectric properties |
| title | The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization |
| title_full | The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization |
| title_fullStr | The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization |
| title_full_unstemmed | The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization |
| title_short | The Thermoelectric Properties of Spongy PEDOT Films and 3D-Nanonetworks by Electropolymerization |
| title_sort | thermoelectric properties of spongy pedot films and 3d nanonetworks by electropolymerization |
| topic | PEDOT films 3D nanonetworks electropolymerization thermoelectric properties |
| url | https://www.mdpi.com/2079-4991/12/24/4430 |
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