Layered tungsten-based composites and their pseudocapacitive and electrocatalytic performance

Abstract

The WS2–g-C3N4 composite was synthesized for pseudocapacitive and hydrogen evolution reaction measurements.

A Review of the Recent Advances in Development of Noble Metal‐Free Materials as Electrocatalysts for Hydrogen and Oxygen Evolution Reactions

“…According to a new study, a method to obtain heterostructured composites including of transition metal dichalcogenide, WS 2 , and g-C 3 N 4 was introduced. [174] A facile solvothermal method followed by sulfidation was used to prepare WS 2 À g-C 3 N 4 composites with surface vacancies. According to obtained results of both experimental and computational studies, WS 2 and g-C 3 N 4 demonstrated the preferential bonding and interfacial interactions, which optimize the electronic structure, ameliorates electrochemical performance and also charge transfer.…”

“…In this line the NiTe-HfTe 2 /g-C 3 N 4 shows the lowest Tafel slope (75 mV dec À 1 ) between other prepared samples and close to the Pt/C as the known a standard electrocatalyst (41 mV dec À 1 ). [174] Copyright (2022), with permission from Royal Society of Chemistry.…”

Nanocrystalline β-NiS: a redox-mediated electrode in aqueous electrolyte for pseudocapacitor/supercapacitor applications

“…In this regard, considerable research efforts have been made towards designing and synthesizing various high-performance pseudocapacitive anode materials, such as Fe 2 O 3 , 9 Fe 3 O 4 , 10 Co 3 O 4 , 11 V 2 O 5 , 12 MoO 3 , 13 and transition-metal sulfides, 14,15 in recent times. Among them, transition metal sulfides such as WS 2 , 16 FeS 2 , 17 MoS 2 , 18 CuS, 19 CoS, 20 and NiS [21][22][23][24][25][26][27][28][29][30][31] have recently gained more interest and have been widely used as the anode materials for supercapacitors due to their low electronegativity, excellent electrical conductivity, high specific capacitance, and rich electrochemical redox sites in comparison with their oxide counterparts. Hou et al 21 reported the first use of NiS as a supercapacitor electrode.…”

Activating photocatalytic hydrogen evolution by constructing Ni-based organic layers and tailoring its crystal facets

“…In this regard, breaking through a new synthetic concept is urgently necessary, which is to decrease the size of bulky MOFs into low-dimensional materials, especially ultrathin 2D MOFs, also called metalorganic layers (MOLs), which are gaining increasing attraction. 40 On the one hand, decreasing the size leads to the minimization of the photocarrier transport distance in MOLs, then promoting photogenetic charge transfer rapidly, [41][42][43][44][45][46][47][48][49] while on the other, the structure of MOLs not only increases the specific surface area of the catalyst but also exposes more coordinatively unsaturated metal sites on the surfaces. Both are beneficial to HER catalytic kinetics.…”