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Hierarchical nanostructures have attracted considerable research attention due to their applications in the catalysis field. Herein, we design a versatile hierarchical nanostructure composed of NiMoO4 nanorods surrounded by active MoS2 nanosheets on an interconnected nickel foam substrate. The as‐prepared nanostructure exhibits excellent oxygen evolution reaction performance, producing a current density of 10 mA cm−2 at an overpotential of 90 mV, in comparison with 220 mV necessary to reach a similar current density for NiMoO4. This behavior originates from the structural/morphological properties of the MoS2 nanosheets, which present numerous surface‐active sites and allow good contact with the electrolyte. Besides, the structures can effectively store charges, due to their unique branched network providing accessible active surface area, which facilitates intermediates adsorptions. Particularly, NiMoO …
Publication date: 
1 Jan 2022

Getachew Solomon, Mojtaba Gilzad Kohan, Raffaello Mazzaro, Matteo Jugovac, Paolo Moras, Vittorio Morandi, Isabella Concina, Alberto Vomiero

Biblio References: 
Pages: 2200410
Advanced Sustainable Systems