Self-supported fabrication and electrochemical water splitting study of transition-metal sulphide nanostructured electrodes

Abstract

Transition metal sulphide (TMS) nanostructures exhibit the electrocatalytic OER activity following the order: FeS > CoS > NiS > CuS.

Metal-doped nickel-based chalcogenides and phosphochalcogenides for electrochemical water splitting

“…151,157,158 Regarding monochalcogenides, NiX and CoX also exhibited superior HER and OER activity in an alkaline medium; 153,159,160 however, FeS has also demonstrated superior activity towards the OER process, which might be due to different surface area and roughness factors between the examined metal monosulfides. 150,[161][162][163] However, it is important to accurately estimate the active surface area of the catalyst to provide a meaningful comparison of the effect of the chemical nature of metal chalcogenides on their electrocatalytic activity. 164,165 The HER activity of both MnS 2 and MnS is the lowest compared to other chalcogenides due to weak hydrogen bonding to the surface resulting from the smallest DOS occupation near the Fermi level, 153,166,167 and the same conclusion was done towards the OER activity of manganese sulphide, which is most likely due to the strong OH-M 2+d bond (Fig.…”

Enhanced alkaline bifunctional electrocatalytic water splitting achieved through N and S dual-doped carbon shell reinforced Co9S8microplates

“…chalcogenides, pnictides, carbides, phosphates, and borates lately. [14][15][16][17][18][19] The critical role of the anionic component for the T.M.-based electrocatalysts has been recognized. 20,21 In particular, the influence of anionic components on the electronic environment and spatial orientation of central T.M.…”

Two-phase synthesis of Fe doped cerium phosphate ultra-fine nanocrystals for efficient oxygen evolution

“…Developing active OER electrocatalysts that can accelerate O-H bond fracture and O-O bond formation is essential but remains a huge challenge. [5][6][7] Current industrial level OER electrocatalysts are highly dependent on precious metal catalysts, mainly iridium (Ir) and ruthenium (Ru)-based catalysts; [8][9][10] however, the large-scale commercialization of precious metalbased OER electrocatalysts is greatly hindered by their high cost, low crustal reserves and relatively poor stability. 11,[12][13][14][15][16][17] Therefore, it is very important to develop efficient, economical and stable non-precious metal-based electrocatalysts to make the OER a viable and scalable energy storage technology.…”