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https://hdl.handle.net/1822/82086
Título: | Solid polymer electrolytes based on gellan gum and ionic liquid for sustainable electrochromic devices |
Autor(es): | Alves, R. Fidalgo-Marijuan, A. Campos-Arias, L. Gonçalves, R. Silva, Maria Manuela Del Campo, F. J. Costa, Carlos Miguel Silva Lanceros-Méndez, S. |
Palavras-chave: | Solid polymer electrolytes Gellan gum Ionic liquid Electrochromic devices Sustainability |
Data: | 2022 |
Editora: | American Chemical Society (ACS) |
Revista: | ACS Applied Materials and Interfaces |
Resumo(s): | Materials sustainability is becoming increasingly relevant in every developed technology and, consequently, environmentally friendly solid polymer electrolytes (SPEs) based on gellan gum and different quantities of ionic liquid (IL) 1- Ethyl-3-methyl-imidazolium-thiocyanate [Emim][SCN] have been prepared and applied in electrochromic devices (ECDs). The addition of the IL does not affect the crystalline phase of gellan gum and the samples show a compact morphology, surface uniformity, no phase separation and good distribution of the IL within the carrageenan matrix. The developed SPE are thermally stable up to ~ 100 ºC and show suitable mechanical properties. The most concentrated sample (39 wt.% IL content) reaches a maximum ionic conductivity value of 6.010–3 S cm–1 and 1.810–2 S cm–1 at 30 ºC and 90 ºC, respectively. The electrochromic device (ECD) was fabricated with poly(3,4- ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as working electrode and the developed SPE was compared with an aqueous 0.1 M KNO3 solution. The electrochromic performance of the electrolyte was assessed in terms of spectroelectrochemistry, demonstrating a fully flexible ECD operating at voltages below 1.0 V. This novel electrolyte opens the door to the preparation of high performance sustainable ECD. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/82086 |
DOI: | 10.1021/acsami.2c01658 |
ISSN: | 1944-8244 |
e-ISSN: | 1944-8252 |
Versão da editora: | https://doi.org/10.1021/acsami.2c01658 |
Arbitragem científica: | yes |
Acesso: | Acesso embargado (2 Anos) |
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Ficheiro | Descrição | Tamanho | Formato | |
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51.pdf Até 2025-01-01 | 1,7 MB | Adobe PDF | Ver/Abrir |