2D layered double hydroxides and transition metal dichalcogenides for applications in the electrochemical production of renewable hydrogen

Abstract

Layered double hydroxides (LDHs) and transition metal dichalcogenides (TMDs) are promising electrocatalysts in the splitting of water and the production of hydrogen.

Alkali Containing Layered Metal Oxides as Catalysts for the Oxygen Evolution Reaction

“…[50][51][52][53] In general, LDH materials have proven to be very efficient for the electrochemical and photochemical OER, and such materials have been extensively reviewed elsewhere. [38,[54][55][56] Similarly, transition metal dichalcogenides (TMDC), such as MoS 2 , have been proposed as good alternatives as electrocatalysts for the OER. Having a general formula MX 2 , with M being a transition metal and the chalcogenide X = S, Se or Te, these materials feature transition metal sandwiched between two chalcogenide layers (see Figure 4b).…”

“…Their properties have been extensively reviewed for the OER elsewhere. [56][57][58] Li-rich cathode materials have become widely researched and commercially employed for lithium-ion batteries (LIBs). [59] However, gas evolution, i. e. O 2 , CO 2 , H 2 and ethylene, during the operation of LIBs at high voltages, is one of their most significant failure mechanisms.…”

“…However, it was later discovered that LDH phases were responsible for the OER electrocatalysis, ascribed to their formation in OER conditions [50–53] . In general, LDH materials have proven to be very efficient for the electrochemical and photochemical OER, and such materials have been extensively reviewed elsewhere [38,54–56] . Similarly, transition metal dichalcogenides (TMDC), such as MoS 2 , have been proposed as good alternatives as electrocatalysts for the OER.…”

“…Having a general formula MX 2 , with M being a transition metal and the chalcogenide X=S, Se or Te, these materials feature transition metal sandwiched between two chalcogenide layers (see Figure 4b). Their properties have been extensively reviewed for the OER elsewhere [56–58] …”

Amplifying Flutamide Sensing through the Synergetic Combination of Actinidia-Derived Carbon Particles and WS2 Platelets

“…The M atoms are sandwiched between two chalcogen atoms, with covalent bonding between the M and X atoms, to give stacked layers that are held by weak van der Waals forces. MoS 2 is a well-known member of this family, finding a wide range of applications. , Indeed, carbon-based materials have been combined with MoS 2 . Tungsten disulfide, WS 2 , although less well-known, has been employed in the development of electrochemical-based sensors, − indicating that it is suitably conducting for sensing applications.…”