Cobalt diselenide (001) surface with short-range Co-Co interaction triggering high-performance electrocatalytic oxygen evolution

Crystal facet and phase engineering for advanced water splitting

“…220,221 Dang et al synthesized the (001) faceted orthorhombic-CoSe 2 (o-CoSe 2 ) with the highest activity derived from DFT screening. 222 Furthermore, as shown in Fig. 10g1, Co–Co interaction by active Co atom at upper (001) facet and its mirrored Co atom is influenced by adsorbate species.…”

“…The addition of an interface-rich heterostructure to faceted SnS 2 showed a low overpotential of 108 mV at −10 mA cm −2 and long-term stability of 30 h. 40 Additionally, in various selenides, highly active facets and their intrinsic mechanism have been elucidated. 220,221 222 Furthermore, as shown in Fig. 10g1, Co-Co interaction by active Co atom at upper (001) facet and its mirrored Co atom is influenced by adsorbate species.…”

“…(g1) Optimized slabs of various intermediates in the OER process and (g2) free energy plots of (001) facet of o-CoSe 2 . 222 Copyright 2021 Springer.…”

High-Entropy Alloy with Mo-Coordination as Efficient Electrocatalyst for Oxygen Evolution Reaction

“…3−6 The main challenge of electrocatalytic water oxidation is the huge overpotential in the oxygen evolution reaction (OER) process, which is an obstacle in the production of green energy hydrogen energy at present. 6,7 Noble metal catalysts (RuO 2 and IrO 2 ) are recognized as the benchmark OER catalysts and have been commercially applied in water splitting industry. Their shortcomings such as poor stability and high cost limit their large-scale and long-term application.…”

“…There is an urgent need to develop renewable and environmentally friendly energy and technologies. , Electrolysis of water to produce hydrogen is a promising way of renewable energy conversion and storage. − The main challenge of electrocatalytic water oxidation is the huge overpotential in the oxygen evolution reaction (OER) process, which is an obstacle in the production of green energy hydrogen energy at present. , Noble metal catalysts (RuO 2 and IrO 2 ) are recognized as the benchmark OER catalysts and have been commercially applied in water splitting industry. Their shortcomings such as poor stability and high cost limit their large-scale and long-term application. , Co, Ni, and Fe-based alloys in the first group 3d transition metals are very promising OER catalysts because they can speed up the reaction rates and reduce the OER electrocatalytic overpotential and energy loss. , However, conventional binary or ternary alloys have poor corrosion resistance due to their large miscible gap, which hinders their further application.…”