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https://hdl.handle.net/1822/82899
Título: | Comparison of physical/chemical properties of Prussian Blue thin films prepared by different pulse and DC electrodeposition methods |
Autor(es): | Isfahani, Vahideh Bayzi Arab, Ali Belo, João Horta Araújo, João Pedro Silva, Maria Manuela Almeida, B. G. |
Palavras-chave: | Pulse electrodeposition Prussian blue Electrochemical devices Electrochemical stability Charge exchange |
Data: | 2022 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Materials |
Citação: | Bayzi Isfahani, V.; Arab, A.; Horta Belo, J.; Pedro Araújo, J.; Manuela Silva, M.; Gonçalves Almeida, B. Comparison of Physical/Chemical Properties of Prussian Blue Thin Films Prepared by Different Pulse and DC Electrodeposition Methods. Materials 2022, 15, 8857. https://doi.org/10.3390/ma15248857 |
Resumo(s): | Prussian Blue (PB) thin films were prepared by DC chronoamperometry (CHA), symmetric pulse, and non-symmetric pulse electrodeposition techniques. The formation of PB was confirmed by infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDX) and UV-Vis transmission measurements. X-ray diffraction (XRD) shows the stabilization of the insoluble form of PB. From scanning electron microscopy (SEM) studies, an increase in porosity is obtained for the shorter pulse widths, which tends to improve the total charge exchange and electrochemical stability of the films. While the film prepared by CHA suffered a degradation of 82% after 260 cycles, the degradation reduced to 24% and 34% for the samples prepared by the symmetric and non-symmetric pulse methods, respectively. Additionally, in the non-symmetric pulse film, the improvement in the charge exchange reached ~522% after 260 cycles. According to this study, the deposition time distribution affects the physical/chemical properties of PB films. These results then render pulse electrodeposition methods especially suitable to produce high-quality thin films for electrochemical devices, based on PB. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/82899 |
DOI: | 10.3390/ma15248857 |
ISSN: | 1996-1944 |
Versão da editora: | https://doi.org/10.3390/ma15248857 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | PHYSICS OF QUANTUM MATERIALS AND BIONANOSTRUCTURES (2018 - ...) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Materials, 15, 8857 (2022).pdf | Paper | 3,11 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons