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Listar por palabra clave "HER"

Mostrando ítems 1-7 de 7

Electrochemical characterization of a NiCo/Zn cathode for hydrogen generation

Herraiz-Cardona, Isaac; Ortega Navarro, Emma María; Vázquez-Gómez, Lourdes; Pérez-Herranz, Valentín (PERGAMON-ELSEVIER SCIENCE LTD, 2011-09)

[EN] Hydrogen is considered to be the most promising candidate as a future energy carrier. One of the most used technologies for the electrolytic hydrogen production is alkaline water electrolysis. However, due to the high ...
Modification of porous nickel electrodes with silver nanoparticles for hydrogen production

Pérez-Herranz, Valentín; Medina, R.; Taymans, P.; González-Buch, C.; Ortega Navarro, Emma María; Sánchez-Loredo, G.; Labrada-Delgado, G.J. (Elsevier, 2018-01)

[EN] Silver nanoparticles were electrodeposited into the surface of a macroporous Ni electrode. The developed electrodes were characterized morphologically by confocal laser scanning microscopy and field emission scanning ...
Study of the catalytic activity of 3D macroporous Ni and NiMo cathodes for hydrogen production by alkaline water electrolysis

González Buch, Cristina; Herraiz Cardona, Isaac; Ortega Navarro, Emma María; García Antón, José; Pérez Herranz, Valentín (Springer Verlag (Germany), 2016-07)

Platinum is the electrode material with the highest catalytic activity for the hydrogen evolution reaction (HER). However, its high cost and scarcity are the two major barriers for its usage in the industrial alkaline ...
Synthesis and characterization of Au-modified macroporous Ni electrocatalysts for alkaline water electrolysis

González Buch, Cristina; Herraiz Cardona, Isaac; Ortega Navarro, Emma María; Mestre, Sergio; Pérez Herranz, Valentín (Elsevier, 2016-01-12)

Au nanoparticles (Au-NPs) were successfully synthesized and incorporated into the surface of a macroporous Ni electrode fabricated via galvanostatic electrodeposition at high current densities in order to produce hydrogen ...
Synthesis and characterization of macroporous Ni, Co and NieCo electrocatalytic deposits for hydrogen evolution reaction in alkaline media

González Buch, Cristina; Herraiz Cardona, Isaac; Ortega Navarro, Emma María; García Antón, José; Pérez-Herranz, Valentín (Elsevier, 2013-08-21)

In this work, macroporous Ni, Co and NieCo electrodes have been developed by codeposition at high current density on stainless steel (AISI 304) substrates. The obtained materials were characterized both morphologically ...
The HER in alkaline media on Pt-modified three-dimensional Ni cathodes

Fiameni, Stefania; Herraiz Cardona, Isaac; Musiani, Marco; Pérez-Herranz, Valentín; Vázquez-Gómez, Lourdes; Verlato, Enrico (Elsevier, 2012-07)

[EN] Electrodeposited porous Ni layers and commercial Ni foams were submitted to spontaneous deposition of Pt, achieved by immersing the Ni substrates in H2PtCl6 solutions, at open circuit, to produce Pt-modified 3D Ni ...
Why the activity of the hydrogen oxidation reaction on platinum decreases as pH increases

Briega-Martos, Valentín; Ferre Vilaplana, Adolfo; Herrero, Enrique; Feliu, Juan M. (Elsevier, 2020-09-10)

[EN] Platinum is a very effective electrode for the hydrogen evolution and oxidation reactions (HER/HOR) in acidic media. However, the activity for the HOR on platinum falls two orders of magnitude from acidic to alkaline ...