Strategies to improve electrocatalytic performance of MoS₂-based catalysts for hydrogen evolution reactions

Abstract

In this review, we summarize three general classes of effective strategies to enhance the HER activity of MoS2 and DFT calculation methods, i.e. defect engineering, heterostructure formation, and heteroatom doping.

High‐Entropy Nanomaterials for Advanced Electrocatalysis

“…The bottom-up method is possible to create catalysts with uniform sizes and shapes through self-assembly and growth from reactants. [48,49] Several synthesis methods employed for HEMs and their electrocatalytic application are provided in Table 1. In the following subsections, we will discuss various synthesis methods, characteristics, and applications of HEMs.…”

Solar Fuel Production from Hydrogen Sulfide: An Upstream Energy Perspective

“…Therefore, various strategies, including phase transformations, vacancy engineering, and morphology modifications, have been suggested to improve MoS 2 photocatalytic activity. [85] Heterostructure engineering using MoS 2 and CdS is a common approach to attain HER rates on the order of tens of mmol g À1 h À1 . [86][87][88][89] For example, 1T-metallic phase MoS 2 nanosheets with excellent metallic conductivity and many photocatalytically active basal and edge planes inhibited CdS photocorrosion due to the improved charge separation and transfer to the reactants.…”

Defect and strain engineered MoS2/graphene catalyst for an enhanced hydrogen evolution reaction

“…2,3 However, MoS 2 HER efficiency does not meet expectations because the catalytic activity of MoS 2 highly depends on its active edge sites, thereby rendering the large inert basal plane non-catalytic, as well as a poor electrical conductivity for the catalyst. 4 Many strategies are being explored to optimize the catalytic performances of MoS 2 , including controlling the size of MoS 2 to expose more active edge sites using nanoparticles, 5 nanowires, 6 nanoflakes 7 and nanotube, 8 as well as coupling MoS 2 with other conductive scaffolds, such as graphene, 9,10 carbon nanotube 11 and Au electrode, 12 to improve electrical conductivity of MoS 2 material and HER electrocatalytic activity. Chemical doping 13 and defects formation 14,15 are two additional methods used to improve the intrinsic active sites.…”