Recent advances in molybdenum diselenide-based electrocatalysts: preparation and application in the hydrogen evolution reaction

Abstract

Molybdenum diselenide (MoSe2), as a membrane of representative 2D family, has been extensively used as an electrocatalyst for sustainable hydrogen evolution reaction (HER) due to unique physical-chemical properties, morphological and...

A co-axial structure composed of RuO2 on defective N-doped carbon nanotubes as a highly efficient electrocatalyst for overall water splitting

“…14 In particular, hollow 1D nanotubes provide numerous additional pathways and pores, increasing the availability of active sites, and thereby improving mass transfer and promoting the adsorption of reactants and intermediates produced during the electrolytic process. 15–18 RuO 2 @CNT@MOF and RuCo alloys anchored on CNTs (RuCo-OCA) show excellent hydrogen production performance in overall water splitting. But their stability is assessed under low current densities and proves to be unsustainable over prolonged periods.…”

Tailoring the electronic environment of MoSe2via cation metal doping for the enhanced alkaline hydrogen evolution reaction

“…Among these earth-abundant candidates, 2D layered transition metal dichalcogenide nanostructures with a general formula MX 2 (where M is Mo or W, and X stands for S or Se) have been confirmed to be highly prominent categories of HER nanomaterials due to their reasonable price, distinct physicochemical properties, befitting hydrogen adsorption energy, and controllable morphological and interfacial engineering. 21–25 In particular, for MoSe 2 , the sandwiched Se–Mo–Se basal planes along the c -axis are bonded together by a van der Waals force, which verges to minimize surface free energy by exposing the basal planes as terminating surfaces, offering a possibility for diversity to enhance the electrochemical activity and expose more active edge sites. 26–31 Previously, studies have been conducted to improve the HER performance of MoSe 2 via the development of highly active Se vacancies, 32–34 heteroatom incorporation, 34,35 and electronic regulation by constructing alloys, 36–38 but the alkaline HER activity of MoSe 2 is far from satisfactory compared with commercial benchmarks.…”

Cu intercalation and defect engineering realize an atomic-scale hydrogen spillover effect in NbS2 to boost acidic hydrogen evolution

“…Hydrogen (H 2 ) is considered to be a sustainable energy source for the future to replace fossil fuels and solve global environmental and energy issues. 1–4 The electrochemical hydrogen evolution reaction (HER), as a critical cathodic process in water electrolysis, is a green method to produce H 2 without carbon emission, 5–8 but it always needs to be accelerated by an electrocatalyst due to its sluggish kinetics. Currently, Pt-based materials are still used as commercial HER catalysts.…”

“…9,13–16 In particular, layered transition metal dichalcogenides (TMDs) have emerged as potential alternatives to Pt-based catalysts. 9 As a representative example, MoS 2 with an appropriate Δ G H* value has been widely studied, 17,18 although its active sites are located at the layer edge. 19 Noble metals have been used to load the MoS 2 surface to fabricate heterogeneous catalysts, which have showed comparable HER activity to the commercial 20 wt% Pt/C.…”