Simultaneous Nitrogen Doping and Pore Generation in Thermo-Insulating Graphene Films via Colloidal Templating
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박현우 | - |
dc.contributor.author | 이정민 | - |
dc.contributor.author | 임호선 | - |
dc.contributor.author | 구혜영 | - |
dc.contributor.author | 이원목 | - |
dc.contributor.author | 이현정 | - |
dc.date.available | 2021-02-22T11:23:46Z | - |
dc.date.issued | 2016-11 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.issn | 1944-8252 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/9346 | - |
dc.description.abstract | We report a simple method for preparing highly efficient thermoelectric materials through the fabrication of nitrogen-doped reduced graphene oxide (GO) with a porous structure. The samples were produced by thermal annealing of GO/nitrogen-rich polystyrene (N-PS) particle composite films using a colloidal templating method. N-PS particles served as a nitrogen dopant source for the nitrogen-doped thermally reduced graphene oxide (TrGO) as well as sacrificial particles for the porous structure. The S values of the porous TrGO films were negative, indicating that the samples were transformed into n-type materials. Their porous structures simultaneously resulted in materials with high σ values and low in-plane κ values by providing numerous air cavities for phonon scattering and destruction of the anisotropic structure, maintaining an interconnected structure for an electron transport path. Thus, the porous TrGO films exhibited enhanced power factors and low κ values. The highest ZT value of 1.39 × 10–4 was attained for a porous TrGO film annealed at 1100 °C, which was 1200 times higher than that of a nonporous TrGO film. This study emphasizes that an isotropic orientation of two-dimensional materials has a significant effect on the suppression of in-plane κ, leading to their enhanced thermoelectric performance. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Simultaneous Nitrogen Doping and Pore Generation in Thermo-Insulating Graphene Films via Colloidal Templating | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1021/acsami.6b09836 | - |
dc.identifier.scopusid | 2-s2.0-84999271487 | - |
dc.identifier.wosid | 000388913900016 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS INTERFACES, v.8, no.46, pp 31617 - 31624 | - |
dc.citation.title | ACS APPLIED MATERIALS INTERFACES | - |
dc.citation.volume | 8 | - |
dc.citation.number | 46 | - |
dc.citation.startPage | 31617 | - |
dc.citation.endPage | 31624 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.url | http://pubs.acs.org/doi/10.1021/acsami.6b09836 | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
Sookmyung Women's University. Cheongpa-ro 47-gil 100 (Cheongpa-dong 2ga), Yongsan-gu, Seoul, 04310, Korea02-710-9127
Copyright©Sookmyung Women's University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.