RT Journal Article
T1 Ni/Fe electrodes prepared by electrodeposition method over different substrates for oxygen evolution reaction in alkaline medium
T2 Electrodos de Ni/Fe preparados por el método de electrodeposición sobre diferentes sustratos para la reacción de desprendimiento de oxígeno en medio alcalino
A1 Pérez-Alonso, Francisco José
A1 Adán Delgado, María Cristina
A1 Rojas, Sergio
A1 Peña, Miguel Angel
A1 García Fierro, Jose Luis
AB A series of Ni/Fe electrodes have been prepared by electrodeposition of metal salt precursors on different substrates. The surface morphology, chemical composition and electrochemical characteristics of these electrodes were studied by various physico-chemical techniques such as X-ray Photoelectron Spectroscopy (XPS) and Scanning Electron Microscopy (SEM). The electrochemical properties of the electrodes were examined by steady-state polarization curves. First, the influence of features such as Ni/Fe composition and type of substrate for the oxygen evolution reaction (OER) were determined by electrochemical techniques in a conventional 3-electrodes cell. The overpotential for the OER is lower for the electrodes with the higher concentrations of Ni. The electrodes with a Ni/Fe composition of 75/25 wt.% electrodeposited on steel mesh and/or 75/25 and 50/50 wt.% on nickel foam result in the most active configurations for the OER. These electrodes were further tested as anodes for alkaline water electrolysis during at least 70 h. In order to understand their activity and stability, the used electrodes were also characterized by SEM and compared to the fresh electrodes. Among the compositions and substrates examined, the Ni50Fe50-Nf electrode exhibited the lowest overpotential (2.1 V) for the OER and the higher stability as anode in an alkaline water electrolysis cell.
PB Elsevier
SN 0360-3199
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/93348
UL https://hdl.handle.net/20.500.14352/93348
LA eng
NO Pérez-Alonso, F. J., Adán, C., Rojas, S., Peña, M. A., & Fierro, J. L. G. (2014). Ni/Fe electrodes prepared by electrodeposition method over different substrates for oxygen evolution reaction in alkaline medium. international journal of Hydrogen Energy, 39(10), 5204-5212.
NO Ministerio de Educación (España)
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 9 abr 2025