Archivio Istituzionale della RicercaFe–MM (MM = mischmetal) crystalline alloys have been characterized by means of microstructural and electrochemical techniques in view of their possible application as electrocatalytic materials for the hydrogen evolution reaction (HER). The microstructure of the alloys investigated (Fe95 MM5 , Fe85 MM15 , Fe80 MM20 , Fe70 MM30 ) has been characterized by phase analysis techniques (SEM-EPMA, XRD). The electrocatalytic efficiency has been evaluated on the basis of electrochemical data obtained from cathodic polarization curves and ac impedance measurements carried out in 1 M NaOH solution at 298 K. The microstructural features play a fundamental role in determining the electrocatalytic activity of the investigated alloys. The overall experimental data indicate that interesting electrocatalytic performances are obtained with the Fe80 MM20 electrode, which exhibits the highest activity towards the HER.
Investigation o the elctrocatalytic behaiour of Fe-MM (MM = Mischmetal) crystalline alloys for the hydrogen evolution reaction in alkaline medium / Rosalbino, Francesco; Maccio', D; Saccone, A; Angelini, EMMA PAOLA MARIA VIRGINIA; Delfino, S.. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - ELETTRONICO. - 431:(2007), pp. 256-261. [10.1016/j.jallcom.2006.05.055]
Investigation o the elctrocatalytic behaiour of Fe-MM (MM = Mischmetal) crystalline alloys for the hydrogen evolution reaction in alkaline medium
ROSALBINO, Francesco;ANGELINI, EMMA PAOLA MARIA VIRGINIA;
2007
Abstract
Fe–MM (MM = mischmetal) crystalline alloys have been characterized by means of microstructural and electrochemical techniques in view of their possible application as electrocatalytic materials for the hydrogen evolution reaction (HER). The microstructure of the alloys investigated (Fe95 MM5 , Fe85 MM15 , Fe80 MM20 , Fe70 MM30 ) has been characterized by phase analysis techniques (SEM-EPMA, XRD). The electrocatalytic efficiency has been evaluated on the basis of electrochemical data obtained from cathodic polarization curves and ac impedance measurements carried out in 1 M NaOH solution at 298 K. The microstructural features play a fundamental role in determining the electrocatalytic activity of the investigated alloys. The overall experimental data indicate that interesting electrocatalytic performances are obtained with the Fe80 MM20 electrode, which exhibits the highest activity towards the HER.
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https://hdl.handle.net/11583/1644135
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