Thermoelectric properties enhancement of p-type composite films using wood-based binder and mechanical pressing
| dc.contributor.author | Jang, Eunhwa | |
| dc.contributor.author | Poosapati, Aswani | |
| dc.contributor.author | Jang, Nathaniel | |
| dc.contributor.author | Hu, Liangbing | |
| dc.contributor.author | Duffy, Michael | |
| dc.contributor.author | Zupan, Marc | |
| dc.contributor.author | Madan, Deepa | |
| dc.date.accessioned | 2019-10-10T15:29:41Z | |
| dc.date.available | 2019-10-10T15:29:41Z | |
| dc.date.issued | 2019-05-27 | |
| dc.description.abstract | Thermoelectric generators (TEGs) fabricated using additive manufacturing methods are attractive because they offer the advantages of scalability, lower cost, and potentially higher power density than conventional TEGs. Additive manufacturing of TEGs requires active thermoelectric particles to be dispersed in a polymer binder to synthesize printable slurries, and printed films to be subsequently subjected to a long and high temperature curing to enhance their thermoelectic properties. A large amount of polymer binder present in composite films results in a sizable loss in the electrical conductivity. In addition, a long and high-temperature film curing results is a slow and energy intensive fabrication process. In this work, we demonstrate the feasibility of using a small amount (≤10⁻³ wt ratio) of novel nanofiber cellulose (NFC) as a binder to provide sufficient adhesion strength to hold the TE particles together in the composite films. We also demonstrate a pressure induced densification process to enhance the thermoelectic properties of printed composite films. This novel approach has the potential to fundamentally transform the manufacting method for printing TEGs by eliminating the need of long-duration and high-temperature curing. A higher applied pressure leads to a compact packing and densification of films resulting in an improvement in the electrical conductivity. The highest power factor achieved for best performing p-type thermoelectric-NFC composite film subjected to pressure induced densification is 611 μW/m-K². | en_US |
| dc.description.sponsorship | The author thanks the University of Maryland, Baltimore County for supporting this research from startup fund.The author would like to thank Rebekah Kempske, Rudolph Holly for their contributions. | en_US |
| dc.description.uri | https://www.nature.com/articles/s41598-019-44225-z | en_US |
| dc.format.extent | 10 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m24itf-osqp | |
| dc.identifier.citation | Eunhwa Jang, et.al, Thermoelectric properties enhancement of p-type composite films using wood-based binder and mechanical pressing, Scientific Reports volume 9, Article number: 7869 (2019) , https://doi.org/10.1038/s41598-019-44225-z | en_US |
| dc.identifier.uri | https://doi.org/10.1038/s41598-019-44225-z | |
| dc.identifier.uri | http://hdl.handle.net/11603/15023 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Springer Nature Limited | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Mechanical Engineering Department Collection | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.relation.ispartof | UMBC Student Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Attribution 4.0 International (CC BY 4.0) | * |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
| dc.subject | Thermoelectric generators (TEGs) | en_US |
| dc.subject | novel nanofiber cellulose (NFC) | en_US |
| dc.subject | wood-based binder | en_US |
| dc.title | Thermoelectric properties enhancement of p-type composite films using wood-based binder and mechanical pressing | en_US |
| dc.type | Text | en_US |