Co3W intermetallic compound as an efficient hydrogen evolution electrocatalyst for water splitting and electrocoagulation in non-acidic media

Reasonably constructed nano-alloyed materials as highly efficient electrocatalysts for the hydrogen evolution reaction

“…Intermetallic compounds (IMCs) with ordered structures are very promising materials for NEAs and are widely used, 36,44,53,59,60,73,86,90,121–126 for example, as highly active electrocatalysts for oxygen reduction reactions, the formic acid oxidation reaction and the HER. This impressive activity is attributed to the well-defined structure (ordered stoichiometry) and tunable electronic properties (strong d-orbital interactions), 127 which allow IMCs to exhibit not only a uniform maximally dispersed active site and optimized electronic structure at the atomic scale thus increasing their mass activity, but also to achieve “enthalpy “stability to improve long-term durability.…”

Stability of Multivalent Ruthenium on CoWO4 Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte

“…Cobalt tungstate is an inexpensive and highly twisted octahedral material, it has been widely concerned as an effective electrocatalyst for water splitting due to its suitable electronic band structure, relatively high electronic conductivity, effective electrochemical and ionic properties. [15,20,21] It was revealed that amorphous CoWO 4 has lower overpotential and Tafel slope than crystalline, whereas the current density of crystalline CoWO 4 was two orders of magnitude higher than those of amorphous. [22][23][24][25] The reason is that the two crystalline materials have different reaction mechanisms in water oxidation decomposition.…”

A highly efficient heterostructure nanorod bifunctional electrocatalyst for realizing enhanced overall water splitting at a large current density

“…Transition-metal-based materials, such as oxides, 17,18 sulfides, 19,20 phosphides, 21 borides, 22 and their alloys, 23 have been widely studied for water-splitting electrocatalysts because of their earth-abundance, high activity, and electrical conductivity. However, there is still a big gap in the practical application of these transition-metal-based electrocatalysts, mainly because of their poor performance and low stability due to the peeling-off of electrocatalysts at large current densities during the rapid gas bubble detachment.…”