Heterointerface engineering of cobalt molybdenum suboxide for overall water splitting

Abstract

Highly active and earth-abundant electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are of great significance for sustainable hydrogen generation through alkaline water electrolysis.

Promoting the four electrocatalytic reactions of OER/ORR/HER/MOR using a multi-component metal sulfide heterostructure for zinc-air batteries and water-splitting

“…Therefore, high-performance OER/HER electrocatalysts are urgently needed to boost the hydrogen production efficiency by OWS. [6][7][8] Recently, the electrochemical methanol oxidation reaction (MOR) has been proposed to replace OER and then reduce the anodic overpotential of OWS and produce high-value formates. MOR with a much lower theoretical oxidation potential (0.58 V) than that of OER (1.23 V) proceeds via a four-electron pathway (eqn (3)) and also needs a superior electrocatalyst to accelerate its kinetics.…”

Nanostructured Ternary Bismuth–Antimony Trichalcogenide/Au Heterostructure Boosts Electrocatalytic Hydrogen Evolution Reaction

“…Hydrogen has been explored as a potential candidate, being a clean and green energy carrier with zero CO 2 emissions. − The electrocatalytic/photocatalytic process offers a cost-effective and environmentally friendly route for hydrogen generation compared with the existing and traditional fossil fuel–based approaches. , The fundamental reactions in water electrolysis consist of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) at the anode and cathode sides of the cell, respectively . Platinum group metals and alloys exhibit remarkable electrocatalytic HER behavior in acidic conditions, with practically nil overpotential, a low Tafel slope, and rapid reaction kinetics; however, the high cost and material scarcity severely limit their practical applications. ,,− Development of highly efficient and economically viable electrocatalysts for HER and OER, ideally based on earth-abundant metals, is crucial to overcoming the existing challenges related to economically viable and climate-neutral large-scale production of hydrogen.…”

Interfacial engineering of Ni–Co–Mn@Ni nanosheet–nanocone arrays as high performance non-noble metal electrocatalysts for hydrogen generation

“…Therefore, the method of electrocatalyst synthesis plays a pivotal role in achieving the desired nanostructure and properties. 28 Among the conventional and investigated methods for producing high-performance electrocatalysts, including hydrothermal methods, 29 chemical vapor deposition (CVD), 30 the microwave-assisted method, 31 liquid phase exfoliation, 32 etc. electrodeposition has garnered significant attention due to in situ formation and its ability to yield a suitable structure with optimal surface and electrochemical properties.…”