Electroless Nickel Plating of Magnesium Particles for Hydrogen Storage
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Hydrogen is emerging as a key energy vector for the transition toward renewable and
sustainable energy sources. However, its safe and efficient storage remains a significant technical challenge in terms of cost, safety, and performance. In this study, we aimed to address
the kinetic limitations of Mg by synthesizing catalyzed Mg@Ni systems using commercially
available micrometric magnesium particles (~26 µm), which were decorated via electroless
nickel plating under both aqueous and anhydrous conditions. Morphological and compositional characterization was carried out using SEM, EDS, and XRD. The resulting materials
were evaluated through Temperature-Programmed Desorption (TPD), DSC, and isothermal hydrogen absorption/desorption kinetics. Reversibility over multiple absorption–
desorption cycles was also investigated. The synthesized Mg@NiB system shows a reduction of 37 ◦C in the hydrogen release activation temperature at atmospheric pressure and
a decrease of 167.3 ◦C under high vacuum conditions (4.5 × 10−7 MPa), in addition to a
reversible hydrogen absorption/desorption capacity of 3.5 ± 0.09 wt.%. Additionally, the
apparent activation energy for hydrogen desorption was lower (161.7 ± 21.7 kJ/mol) than
that of hydrogenated commercial pure magnesium and was comparable to that of milling
MgH2 systems. This research is expected to contribute to the development of efficient and
low-cost processing routes for large-scale Mg catalysis.
Palabras clave
Magnesium hydride, Ni electroless coating, Hydrogen storage, Anhydrous electroless nickel bath, Magnesium hydride, Ni electroless coating, Hydrogen storage, Anhydrous electroless nickel bath