Progress in electrocatalytic hydrogen evolution of transition metal alloys: synthesis, structure, and mechanism analysis

Abstract

At present, the problems of high energy consumption and low efficiency in electrocatalytic hydrogen production have limited the large-scale industrial application of this technology. Constructing effective catalysts has become the...

Universal synthesis of rare earth-doped FeP nanorod arrays for the hydrogen evolution reaction

“…Recently, a myriad of 3d-transition metal (TM)-based catalysts, such as alloys, 15,16 hydroxides, 17,18 nitrides, 19,20 oxides, 21,22 sulfides, 23,24 and phosphides, 25,26 have been developed to accelerate the HER process. Thereinto, FeP has been identified as one of the prospective HER catalysts owing to its unique proton attractivity.…”

Optimization strategies of high-entropy alloys for electrocatalytic applications

“…48 Fe, Co, Ni, Mn, Cr, Cu, Al and Ti are the most commonly used elements. As mentioned above, Pt and Pd are the best HER elements; 1,12 Ir and Ru are the best OER elements; 122,123 and Cu is the only metal that can catalyze the selective reduction of CO 2 to high value-added multi-carbon products. 124 More importantly, HEAs are a good choice for bifunctional and multifunctional catalysis.…”

“…Among them, high-entropy alloys (HEAs) are composed of five or more equiatomic or near-equiatomic components, forming a simple solid solution phase. 12 Different from traditional alloys, multi-component HEAs are the result of the interaction of multiple principal elements, rather than the unique properties of a single element, with the structural characteristics of disordered occupation and ordered lattice. 13 High-entropy alloying has been widely used in the design of electrocatalysts because of rich elemental composition, adjustable electronic structure, and unique physical and chemical properties (Scheme 1).…”

Cu2O/Cu2S microstructure regulation towards high efficiency photocatalytic hydrogen production and its theoretical mechanism analysis

“…The strategy of heterojunction formation has been shown to be effective in facilitating the separation and transport of catalyst charges. 13–38 S. Mann et al 39 used Cu(CH 3 COO) 2 ·H 2 O as a precursor, and the CuO/Cu 2 O microspheres synthesized by a hydrothermal method without a template and additives showed better photocatalytic activity under visible light. Zhao et al 40 introduced MoS 2 nanosheets onto the surface of Cu 2 O nanoparticles, which reduced the proton reduction overpotential of the electrochemical reaction, and inhibited the photo-induced corrosion.…”