Interfacial Role of Cesium in Prussian Blue Films. Issue 9 (1st January 2015)

• Record Type: Journal Article
• Authors: Catalán, R.; Agrisuelas, J.; Cuenca, A.; García-Jareño, J. J.; Roig, A. F.; Vicente, F.
• Is Part Of: Journal of the Electrochemical Society. Volume 162:Issue 9(2015)
• Page Start: H727
• Page End: H733
• Publication Date: 2015-01-01
• Subjects: Electrochemistry -- Motional Resistance -- Prussian Blue -- QCM-R -- Removal of Cesium; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1061509jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The simultaneous measurement of current, mass, motional resistance and absorbance magnitudes allows the electrochemical cation insertion process to be explained during successive voltammograms around the Prussian Blue ⇄ Everitt's Salt system in CsCl aqueous acid solutions. Two different ways for the entrance of cesium to the porous structure of Prussian Blue have been observed. Firstly, Cs + is spontaneously absorbed as CsCl into the interstitial cluster of water of the channels formed by the Fe(II)low spin −CN−Fe(III)high spin structural units of the crystal. This chemical absorption involves a spontaneous substitution of inner water molecules of the interstitial water cluster. Finally, Cs + can act as a counter-ion during electrochemical stabilization process of Prussian Blue by means of successive voltammograms.