3D nanostructured NiMo catalyst electrodeposited on 316L stainless steel for hydrogen generation in industrial applications

GOMEZ, MELISA JULIETA; DIAZ, LILIANA A.; FRANCESCHINI, ESTEBAN A.; ABUIN, GRACIELA C.

JOURNAL OF APPLIED ELECTROCHEMISTRY

SPRINGER

Lugar: Berlin; Año: 2019

0021-891X

owadays, massive NiMo alloys are considered highly active catalysts for the hydrogenevolution reaction (HER) in industrial alkaline electrolyzers. Thus, it is desirable tostudy other alternative materials, preserving the specific properties of these alloys. Inthis study, a NiMo coating on 316 L stainless steel with high resistance to the corrosivemedium is obtained by electrodeposition process. Properties and structuralcharacteristics of the new synthesized material have been correlated with its efficiencyas electrocatalyst. Herein, using a simple plating method, it was possible to obtain amaterial with a catalytic activity for the hydrogen evolution reaction (HER) in alkalinemedia, which is 37.6 times higher than that of conventional raw Ni catalysts, at aconsiderably lower cost.The 3D nanostructured NiMo catalyst synthesized presented a highly roughened surfacewith porous microstructure, which is an essential requirement for obtaining highcatalytic activity with this type of systems