Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/39753
Título: | Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties |
Autor(es): | Leones, Rita Daniela Barros Sentanin, Franciani Nunes, Sílvia Cristina Esperança, J. M. S. S. Gonçalves, Maria Cristina Pawlicka, Agnieska Bermudez, Verónica de Zea Silva, Maria Manuela |
Palavras-chave: | Chitosan Polymer electrolyte Ionic liquid Alkyl-chain length |
Data: | 2015 |
Editora: | Elsevier |
Revista: | Electrochimica Acta |
Citação: | Leones, R., Sentanin, F., Nunes, S. C., Esperança, J. M. S. S., Gonçalves, M. C., Pawlicka, A., . . . Silva, M. M. (2015). Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties. Electrochimica Acta, 184, 171-178. doi: 10.1016/j.electacta.2015.09.163 |
Resumo(s): | New polymer electrolytes (PEs) based on chitosan and three ionic liquid (IL) families ([C2mim][CnSO3], [C2mim][CnSO4] and [C2mim][diCnPO4]) were synthesized by the solvent casting method. The effect of the length of the alkyl chain of the IL anion on the thermal, morphological and electrochemical properties of the PEs was studied. The solid polymer electrolytes (SPE) membranes were analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), polarized optical microscopy (POM), atomic force microscopy (AFM), complex impedance spectroscopy (ionic conductivity) and cyclic voltammetry (CV). The obtained results evidenced an influence of the alkyl chain length of the IL anion on the temperature of degradation, birefringence, surface roughness and ionic conductivity of the membranes. The DSC, XRD and CV results showed independency from the length of the IL-anion-alkyl chain. The PEs displayed an predominantly amorphous morphology, a minimum temperature of degradation of 135 °C, a room temperature (T = 25 °C) ionic conductivity of 7.78 × 10−4 S cm−1 and a wide electrochemical window of ∼ 4.0 V. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/39753 |
DOI: | 10.1016/j.electacta.2015.09.163 |
ISSN: | 0013-4686 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Leones_et_al-2015-ElectrochimicaActa 3.pdf Acesso restrito! | 467,93 kB | Adobe PDF | Ver/Abrir |