Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/66666
Título: | Tuning electrical and thermoelectric properties of freestanding graphene oxide papers by carbon nanotubes and heat treatment |
Autor(es): | Okhay, O. Goncalves, G. Dias, C. Ventura, J. Vieira, Eliana Maria Fernandes Gonçalves, L. M. V. Tkach, A. |
Palavras-chave: | Graphene Carbon nanotubes Electrical conductivity Seebeck coefficient Nanocomposite |
Data: | 2019 |
Editora: | Elsevier Science SA |
Revista: | Journal of Alloys and Compounds |
Resumo(s): | Electrical conductivity and Seebeck coefficient of freestanding paper of graphene oxide (GO) and GO reduced by heat treatment at 180 degrees C (rGO) are tuned by addition of carbon nanotubes (CNT). The electrical conductivity of rGO with 50% of CNT is raised to similar to 2940 S/m from similar to 613 S/m for pure rGO or similar to 34 S/m for GO with 50% of CNT without reduction. Moreover, Seebeck coefficient of rGO increases with addition of CNT from -7.04 mu V/K for pure rGO to -20.82 mu V/K for rGO with 50% of CNT, presenting n-type conductivity. As result, calculated power factor PF is enhanced with increasing CNT concentration and the highest PF similar to 1.28 mu W/(K(2)m) is obtained for rGO with 50% of CNT. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/66666 |
DOI: | 10.1016/j.jallcom.2018.12.033 |
ISSN: | 0925-8388 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0925838818345808 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CMEMS - Artigos em revistas internacionais/Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0925838818345808-main.pdf Acesso restrito! | 919,23 kB | Adobe PDF | Ver/Abrir |