Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/44484
Título: | Di-ureasil hybrid electrolytes incorporating a new proton ionic liquid |
Autor(es): | Cardoso, Marita A. Leones, Rita Daniela Barros Rodrigues, Luísa Cidália Guimarães Fernandes, Mariana Figueiredo, Filipe L. Nunes, Sílvia C. Silva, Maria Manuela de Zea Bermudez, Verónica |
Palavras-chave: | Eletrólitos poliméricos Líquidos iónicos di - ureasil hybrid Electrolytes N - butylimidazolium trifluoromethanesulfonate protic ionic liquid Fuel cell conducting materials di-ureasil hybrids fuel cells ionic liquids |
Data: | Mai-2016 |
Editora: | Wiley-VCH Verlag |
Revista: | Chemelectrochem |
Citação: | Cardoso, M. A., Leones, R., Rodrigues, L., Fernandes, M., Figueiredo, F. L., Nunes, S. C., ... & De Zea Bermudez, V. C. (2016). Di‐ureasil hybrid electrolytes incorporating a new proton ionic liquid. ChemElectroChem |
Resumo(s): | The protic ionic liquid (PIL) N-butylimidazolium trifluoromethanesulfonate ([BIm][TfO]) was obtained for the first time and incorporated into a sol-gel derived di-ureasil matrix with a concentration of X = 5, 10 and 30 %, where X is the ratio of the mass of PIL per mass of poly(oxyethylene) (POE). Four years after their synthesis, the resulting quasi-anhydrous electrolytes remained amorphous, homogeneous, flexible and thermally stable below 200 ºC. SEM/EDS data revealed the presence of the PIL at the surface of the xerogels with X > 5 %, demonstrating that this type of morphological characterization is mandatory to avoid misleading ionic conductivity values. The highest ionic conductivity was produced in the washed sample with X = 30 % (3.5 x10-5 and 2.1x10-3 S cm-1 at 25 and 170 ºC, respectively). The present family of electrolytes yielded higher conductivities than the N-ethylimidazolium trifluoromethanesulfonate-based analogues introduced earlier by our group and may be thus considered as promising candidates for applications in fuel cells. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/44484 |
DOI: | 10.1002/celc.201500557 |
ISSN: | 2196-0216 |
e-ISSN: | 2196-0216 |
Versão da editora: | http://onlinelibrary.wiley.com/doi/10.1002/celc.201500557/abstract |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Cardoso et al, ChemElectroChem.pdf Acesso restrito! | 1,34 MB | Adobe PDF | Ver/Abrir |