Morphology and Structure of Electrodeposited Prussian Blue and Prussian White Thin Films

• Autor(a) principal: Baggio, Bruna Fernanda
• Data de Publicação: 2019
• Outros Autores: Vicente, Cristiano, Pelegrini, Silvia, Campos, Cristiani Silveira, Brandt, Iuri Stefani, Tumelero, Milton André, Pasa, Andre Avelino
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/198448
• topic: Hexacianoferrato; Azul da Prússia; Branco da Prússia; Eletrodeposição; Prussian Blue; Prussian White; Electrodeposition; Hexacyanoferrate

The compound Prussian Blue (PB), and its reduced form Prussian White (PW) are nowadays considered, in applied and fundamental research groups, as potential materials for sustainable energy storage devices. In this work, these compounds were prepared by potentiostatic electrochemical synthesis, by using different deposition voltages and thicknesses. Thick, compact and uniform layers were characterized by scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. Results have shown a well-defined transition voltage for growing Prussian Blue phases and a strong dependence of the morphology/growing orientation of the samples as a function of applied potential and thickness. For the negative potential tested of 0.10 V vs. SCE, a mixture of cubic and rhombohedral phases was observed.