MoO₂ nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting

Abstract

Electrochemical water splitting is one of the potential commercial techniques to produce clean hydrogen energy because of the high efficiency and environmental friendliness.

MnS-MoS2 Nanosheets Supported on Mo Plates as Electrocatalyst for the Hydrogen Evolution Reaction

“…Besides, when the overpotential is >240 mV, the HER performance of MnS-MoS 2 /LA-Mo exceeds that of the excellent Pt/C (Figure a). Furthermore, as shown in Figure g and Table S2, ,− the comparison between MnS-MoS 2 /LA-Mo and other similar reported electrocatalysts shows that it has a prominent HER performance. The corresponding Tafel plots are shown in Figure c; MnS-MoS 2 /LA-Mo exhibits a lower Tafel slope of 85.1 mV dec –1 , which is very close to that of Pt/C (69.5 mV dec –1 ) and less than those of Mo (137.2 mV dec –1 ), LA-Mo (128.8 mV dec –1 ), MnS/LA-Mo (117.0 mV dec –1 ), and MoS 2 /LA-Mo (89.3 mV dec –1 ), showing a Volmer-Heyrovsky HER mechanism and lower energy consumption during the HER reaction.…”

Two dimensional oxides for oxygen evolution reactions and related device applications

“…Two-dimensional transition metal oxide catalysts have emerged as efficient electrocatalysts. These include single-metal oxide nanosheets, 33 binary metal oxide nanosheets, 34,35 and multimetal oxide nanosheets. 36 On the one hand, transition metal atoms can be used directly as reaction sites because of the intrinsic activity.…”

“…Xia et al 33 anchored Co nanoparticles to MoO 2 nanosheets (Co/MoO 2 ) through hydrothermal treatment, followed by Ar/H 2 reduction (Fig. 4a).…”

Electrochemical activated molybdenum oxides based multiphase heterostructures with high hydrogen evolution activity in alkaline condition

“…For the preparation of HER catalysts, common methods include tube furnace calcination, [27][28][29] hydrothermal method, [30][31][32] electrodeposition method, [33][34][35] plasma method [36,37] and etching method [38,39]. For tube furnace calcination and hydrothermal methods, their advantages are that they can provide a reaction environment higher than room temperature, suitable for long-term and hightemperature reactions.…”