Recent progress on design and applications of transition metal chalcogenide-associated electrocatalysts for the overall water splitting

Electrochemical hydrogen evolution via water splitting has been regarded as a highly promising technique for fossil-fuel substitution in the future to avoid environmental pollution and energy waste. As half of reaction, oxygen reaction (OER) is major obstacle because sluggish kinetics complex reaction. It imperative urgent develop efficient, low cost earth-abundant electrocatalysts overcome issue. Among various non-noble-metal-based electrocatalysts, transition metal chalcogenide (TMS) associated materials have exploited potential candidates past few years due their excellent electrochemical performance unique internal structure. In this review, we summarized recent advances sulfides (TMSs) (HER), OER, overall splitting, then reviewed several modified strategies from perspective functional concepts synthesis methods, characterization techniques, catalytic mechanisms performances. Finally, existing deficiencies, challenges development directions TMSs HER, process are further discussed summarized.