Electrochemically chopped WS₂ quantum dots as an efficient and stable electrocatalyst for water reduction

Abstract

A single-step electrochemical disintegration of bulk WS2 led to a highly active WS2 QDs electrocatalyst for HER.

Recent Advances in Layered Tungsten Disulfide as Electrocatalyst for Water Splitting

“…Due to low cost and environment-friendly, the electrochemical stripping method has become a promising technology for the preparation of WS 2 QDs. Anantharaj et al [70] successfully stripped the WS 2 sheet into WS 2 quantum dots having a size of smaller than 5 nm (Figure 3a-c) by the one-step electrochemical method. The electrocatalytic performance of WS 2 QDs was better than that of bulk WS 2 (Figure 3d-e).…”

“… (a) TEM micrograph of WS 2 QDs, (b) particle size distribution histogram, (c) HRTEM micrograph, (d–e) LSVs and Tafel plots of different samples at 5 mV s −1 in 0.5 M H 2 SO 4 , (f) Nyquist plots of different samples interfaces at onset overpotentials, (g) a plot of scan rate versus double layer charge current density. Reproduced with permission . Copyright 2018, The Royal Society of Chemistry.…”

“…mV s À 1 in 0.5 M H 2 SO 4 , (f) Nyquist plots of different samples interfaces at onset overpotentials, (g) a plot of scan rate versus double layer charge current density. Reproduced with permission [70]. Copyright 2018, The Royal Society of Chemistry.ChemCatChemReviews doi.org/10.1002/cctc.202000177…”

Facile synthesis of vacancy-induced 2H-MoS2 nanosheets and defect investigation for supercapacitor application

“…[9][10][11] Two-dimensional nanomaterials with special properties have immeasurable application potential in the elds of semiconductors, microelectronics and biomedicine, and have attracted global attention from scientists around the world. [12][13][14][15][16] In particular, molybdenum disulde (MoS 2 ) is considered to be one of the most promising two-dimensional materials due to its low cost, environmental friendliness, natural abundance and ease of manufacturing. [17][18][19] The layered structure of MoS 2 is similar to graphite in which the hexagonal layer of Mo is sandwiched between two S layers.…”

Polymer Composites with Quantum Dots as Potential Electrode Materials for Supercapacitors Application: A Review

“…So, this process have successfully shown advantages like enhanced production yield, flexible usage of electrolytes, superior stability without any additive binders during synthesis, efficient exfoliation via regulating the potential or current [43,46]. More importantly, size controllability is another crucial aspect which can be achieved with this process by altering temperature of electrolyte [40].…”