Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites
Thermoelectric (TE) materials have drawn a lot of attention as a promising technology to harvest waste heat and convert it into electrical energy. However, the toxicity and expense of inorganic TE materials along with high-temperature fabrication processes have limited their application. Additionall...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ababc0 |
| _version_ | 1797746277098717184 |
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| author | Saeed Mardi Marco Risi Ambrogioni Andrea Reale |
| author_facet | Saeed Mardi Marco Risi Ambrogioni Andrea Reale |
| author_sort | Saeed Mardi |
| collection | DOAJ |
| description | Thermoelectric (TE) materials have drawn a lot of attention as a promising technology to harvest waste heat and convert it into electrical energy. However, the toxicity and expense of inorganic TE materials along with high-temperature fabrication processes have limited their application. Additionally, the reduction of raw material resources, such as metals and petroleum is another limiting factor. Hence, developing low-cost, stable, and easily-created TE materials from renewable resources is attracting more and more interest for a wide range of applications including the internet of things and self-powered sensors. Herein, an efficacious processing strategy to fabricate printable TE materials has been developed with Ethyl cellulose (EC), a non-conducting polymer, as the polymer matrix and with Graphene nanoplatelets (GNPs) as fillers. EC, one of the cellulose’s derivatives, has been widely used as a binder in the printing pastes. The conductive pastes with different filler contents have been fabricated. The weight ratio of GNPs and EC were ranged from 0.2 to 0.7. These conductive pastes have been deposited by blade coating on glass substrates. The electrical conductivity of the composites has increased polynomially as the filler content increased, whereas the Seebeck coefficient did not change significantly with the increased electrical conductivity. The highest electrical conductivity at room temperature (355.4 S m ^−1 ) was obtained for the ratio of 0.7. This ratio also had the maximum power factor value. Moreover, a 3D structure form (cylindrical pellet) from the highest conductive paste was also fabricated. The proposed technique demonstrates an industrially feasible approach to fabricate different geometries and structures for organic TE modules. So, this approach could provide a good reference for the production of high efficiency, low-temperature, lightweight, low-cost, TE materials. |
| first_indexed | 2024-03-12T15:35:28Z |
| format | Article |
| id | doaj.art-80f9b0d6ae6645d7b7481dbcc62a6890 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:35:28Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-80f9b0d6ae6645d7b7481dbcc62a68902023-08-09T16:15:52ZengIOP PublishingMaterials Research Express2053-15912020-01-017808510110.1088/2053-1591/ababc0Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocompositesSaeed Mardi0https://orcid.org/0000-0002-7625-1629Marco Risi Ambrogioni1Andrea Reale2Department of Electronic Engineering, CHOSE—Centre for Hybrid and Organic Solar Energy, University of Rome Tor Vergata , via del Politecnico 1, 00133 Rome, ItalyDepartment of Electronic Engineering, CHOSE—Centre for Hybrid and Organic Solar Energy, University of Rome Tor Vergata , via del Politecnico 1, 00133 Rome, ItalyDepartment of Electronic Engineering, CHOSE—Centre for Hybrid and Organic Solar Energy, University of Rome Tor Vergata , via del Politecnico 1, 00133 Rome, ItalyThermoelectric (TE) materials have drawn a lot of attention as a promising technology to harvest waste heat and convert it into electrical energy. However, the toxicity and expense of inorganic TE materials along with high-temperature fabrication processes have limited their application. Additionally, the reduction of raw material resources, such as metals and petroleum is another limiting factor. Hence, developing low-cost, stable, and easily-created TE materials from renewable resources is attracting more and more interest for a wide range of applications including the internet of things and self-powered sensors. Herein, an efficacious processing strategy to fabricate printable TE materials has been developed with Ethyl cellulose (EC), a non-conducting polymer, as the polymer matrix and with Graphene nanoplatelets (GNPs) as fillers. EC, one of the cellulose’s derivatives, has been widely used as a binder in the printing pastes. The conductive pastes with different filler contents have been fabricated. The weight ratio of GNPs and EC were ranged from 0.2 to 0.7. These conductive pastes have been deposited by blade coating on glass substrates. The electrical conductivity of the composites has increased polynomially as the filler content increased, whereas the Seebeck coefficient did not change significantly with the increased electrical conductivity. The highest electrical conductivity at room temperature (355.4 S m ^−1 ) was obtained for the ratio of 0.7. This ratio also had the maximum power factor value. Moreover, a 3D structure form (cylindrical pellet) from the highest conductive paste was also fabricated. The proposed technique demonstrates an industrially feasible approach to fabricate different geometries and structures for organic TE modules. So, this approach could provide a good reference for the production of high efficiency, low-temperature, lightweight, low-cost, TE materials.https://doi.org/10.1088/2053-1591/ababc0printable thermoelectric materialsEthyl Cellulosethick filmpellet |
| spellingShingle | Saeed Mardi Marco Risi Ambrogioni Andrea Reale Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites Materials Research Express printable thermoelectric materials Ethyl Cellulose thick film pellet |
| title | Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites |
| title_full | Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites |
| title_fullStr | Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites |
| title_full_unstemmed | Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites |
| title_short | Developing printable thermoelectric materials based on graphene nanoplatelet/ethyl cellulose nanocomposites |
| title_sort | developing printable thermoelectric materials based on graphene nanoplatelet ethyl cellulose nanocomposites |
| topic | printable thermoelectric materials Ethyl Cellulose thick film pellet |
| url | https://doi.org/10.1088/2053-1591/ababc0 |
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