Effective CuO/CuS heterostructures catalyst for OER performances

Beyond the ordinary: exploring the synergistic effect of iodine and nickel doping in cobalt hydroxide for superior energy storage applications

“…16 Transition metal-based materials have attracted interest as alternatives to pure metal catalysts due to their mechanical and electrochemical strength, 17,18 and their exceptional reactivity, durability, and abundant availability make them suitable choices as catalysts. 19,20 Furthermore, their properties can be tailored by adopting different strategies such as alloying, 21 forming heterostructures with other potential materials, 22,23 tailoring their morphology 24 and doping with other suitable elements. Among the transition metal-based materials, the characteristics of cobalt-based materials make them appropriate candidates for catalytic applications, providing a viable solution to reduce the dependence on precious metals.…”

In situ analysis of the oxygen evolution reaction on the CuO film in alkaline solution by surface interrogation scanning electrochemical microscopy: investigating active sites (CuIII) and kinetics

“…, Cu nanoparticles, 16,17 Cu 2 O nanoparticles, 18 CuO nanostructured film, 19,20 Cu/Cu(OH) 2 core–shell nanorods array, 21 Cu 2 S, 22 Cu 3 P 23 ). 24 Recently, researchers reported that Cu-based composites (CuO/CuS, 25 NiO/CuO, 26 Cu 3 Co 3− x O 4 (ref. 27)) and chalcogenides (Cu 2 X 28 ) display low overpotentials (270 mV, 234 mV, 270 mV and 255 mV cm −2 at 10 mA cm −2 , respectively) for the OER in alkaline solution.…”

Interface engineering of a Ni9S8/MoS2/Ni3S2 heterostructure to boost biomass upgrading coupled with the hydrogen evolution reaction at large current densities

“…To date, it has been demonstrated that electrocatalysts with two dimension (2D)-nanosheet morphology have abundant active sites; in addition, electrocatalysts with heterogeneous interfaces possess the appropriate binding energy for the intermediate species and enhance charge transfer by the formation of the strong interface electronic coupling interaction induced by built-in electric field. 27–41 Recently, different bimetallic precursors have been used to construct metal sulfide heterostructures via the sulfurization reaction such as metal oxides/hydroxides or metal organic frameworks (MOFs). For example, Yu et al prepared NiS 2 and MoS 2 2D nanosheets by controlled surface sulfidation of bimetallic NiMoO 4 for high-current-density electrocatalytic water splitting.…”