Edge-dominated hydrogen evolution reactions in ultra-narrow MoS₂ nanoribbon arrays

Abstract

Future energy generation and storage requirements emphasize the importance of high-performance electrocatalysis. MoS2 edges exhibit ideal energetics for hydrogen evolution reactions (HER) if challenges in their kinetics are addressed. We...

Revisited Catalytic Hydrogen Evolution Reaction Mechanism of MoS2

“…( k ) A comparative analysis between literature values of pristine and modified 2H-MoS 2 and the results obtained in this study. Adapted with permission from [ 53 ], Copyright 2023 Royal Society of Chemistry.…”

“…It is also possible to directly generate branchlike MoS 2 by controlling the proportion of precursors during the growth of MoS 2 , thereby increasing the edge site of MoS 2 [42][43][44][45][46][47][48]. Defect engineering and phase engineering are also strategies to regulate the catalytic hydrogen production performance of MoS 2 [49][50][51][52][53][54][55][56]. Although the catalytic hydrogen production performance of MoS 2 can be adjusted through various regulatory strategies, the corresponding catalytic mechanism is still very controversial.…”

Three-Dimensional Network of Highly Uniform Cobalt Oxide Microspheres/MXene Composite as a High-Performance Electrocatalyst in Hydrogen Evolution Reaction

“…So far, there has been significant research conducted on Pt-based materials as electrocatalysts for the HER, mostly due to their advantageous characteristics such as little overpotential and a low Tafel slope. , Nevertheless, the limited availability, exorbitant expenses, and challenges pertaining to durability in the electrolyte during the process of electrolysis significantly constrain their potential for widespread commercial use. The worldwide scalability of possible clean-energy solutions might be achieved by using earth-abundant minerals as substitutes for Pt-based electrocatalysts. ,, Several first-row transition-metal compounds, such as oxides, sulfides, and phosphides, have recently gained attention as promising electrocatalysts for water splitting. − However, achieving further improvements in their electrochemical activity and durability through rational design and preparation techniques remains a challenging task . Due to its affordable cost, excellent redox capability, and relatively effective resistance to corrosion in alkaline environments, spinel Co 3 O 4 demonstrates potential as a viable alternative to noble-metal-based electrocatalysts. − Nevertheless, these materials continue to exhibit drawbacks such as limited active surface area and inadequate intrinsic conductivity.…”

Selective activation of MoS2 grain boundaries for enhanced electrochemical activity

“…6–8 To enhance the overall efficiency of MoS 2 , researchers have increased the edge concentration by enhancing the porosity of MoS 2 9,10 but at the cost of increased process complexity and decreased efficiency of photo-excited carrier transport. 11 To take advantage of the large relative concentration of basal plane sites compared to edges, significant ongoing research efforts are dedicated toward developing innovative strategies to activate the MoS 2 basal plane. These strategies include surface modifications, defect engineering through functionalization, 12 and hybridization with other materials.…”