Bi-functional Ni3S2@MoS2 heterostructure with strong built-in field as highly-efficient electrolytic catalyst

Electrocatalytic urea oxidation: advances in mechanistic insights, nanocatalyst design, and applications

“…19,27,28 In addition, some researchers have designed catalysts by incorporating external elements to enhance the intrinsic activity along with the exploration of the UOR mechanism, such as heteroatom doping regulation and heterostructure construction. 21,[29][30][31][32][33][34] Advanced UOR catalysts have been recently explored for energy conversion devices. 10 Developing urea electrolysis and photoelectrochemical urea splitting technologies with anodic UOR instead of OER can signicantly improve hydrogen production efficiency.…”

“…19,27,28 In addition, some researchers have designed catalysts by incorporating external elements to enhance the intrinsic activity along with the exploration of the UOR mechanism, such as heteroatom doping regulation and heterostructure construction. 21,29–34…”

Interfacial Coupling of NiPx/MoS2/CC Hybrid Catalysts for Effective Electrocatalytic Oxidation of Urea and Energy‐Saving Hydrogen Evolution

“…Furthermore, the Tafel slopes obtained from LSV polarization curves are plotted and then reflect their HER dynamics (Figure 3b). The Tafel slope of NiP x /MoS 2 /CC is measured to be 83.21 mV dec −1 , which is much smaller than that of MoS 2 /CC (119.92 mV dec −1 ) and NiP x /CC (130.38 mV dec −1 ), which demonstrated that the rate‐determining step of NiP x /MoS 2 /CC is the Heyrovsky step following by the Volmer–Heyrovsky mechanism as the HER pathway [53,54] . The corresponding histograms of Tafel values and overpotential required at different current densities are also presented in Figure.…”

“…The Tafel slope of NiP x /MoS 2 /CC is measured to be 83.21 mV dec À 1 , which is much smaller than that of MoS 2 /CC (119.92 mV dec À 1 ) and NiP x /CC (130.38 mV dec À 1 ), which demonstrated that the rate-determining step of NiP x /MoS 2 /CC is the Heyrovsky step following by the Volmer-Heyrovsky mechanism as the HER pathway. [53,54] The corresponding histograms of Tafel values and overpotential required at different current densities are also presented in Figure . 3c.It is worth noting that the superb HER activity of the NiP x /MoS 2 /CC catalyst also surpasses most of the recently reported catalysts (Table S3).…”