Oxidized carbon fiber supported vertical WS2 nanosheets arrays as efficient 3 D nanostructure electrocatalyts for hydrogen evolution reaction

Recent Advances in Layered Tungsten Disulfide as Electrocatalyst for Water Splitting

“…Other carbon materials such as RGO, [171,187] graphene, [153,159] CNT, [30,162] carbon fiber, [164,166] have also been used as supports, which can also improve the electrocatalytic performance of WS 2 .…”

WS(1−x)Sex Nanoparticles Decorated Three-Dimensional Graphene on Nickel Foam: A Robust and Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

“…A Tafel slope of 51 mV dec −1 was extracted for WS (1− x ) Se x /graphene/NF, which is close to the value of a commercial Pt catalyst, and 62 mV and 63 mV dec −1 were obtained for WS 2 (45 min)/graphene/NF and WS 2 /NF, respectively ( Figure 6 c). The Tafel slope, 51 mV dec −1 of WS (1− x ) Se x /graphene/NF, was lower than those of the previously reported WS 2 -based catalysts as well as other hybrid catalysts for HER, such as 3D WS 2 /graphene/Ni (87 mV dec −1 ) [ 45 ], nanostructured WS 2 /CC (127~105 mV dec −1 ) [ 46 ], bulk WS 2 and WS 2 nanosheets on bare oxidized carbon fiber (OCF) (149 ~ 99 mV dec −1 ) [ 47 ], WS 2 @WS 2 nanorattles, WS 2 nanoflakes and bulk WS 2 (68, 71 and 92 mV dec −1 ) [ 48 ], vertically-oriented WS 2 nanosheet/graphene (73 mV dec −1 ) [ 49 ], WSe 2 and WS 2(1− x ) Se 2 x nanotubes (105 and 99 mV dec −1 ) [ 50 ], and monolayer of WS 2 and WS 2(1− x ) Se 2 x with a tunable band gap (100 and 85 mV dec −1 ) [ 51 ]. Previous research demonstrated the influence of Se inclusion to create the abundant active edges which can be promote HER properties and hence to perceive the low overpotential and small Tafel slope [ 52 ].…”

One-Step Surface-Plasma-Induced Exfoliation of the Graphite/WS2 Bilayer into Homogeneous Two-Dimensional Graphene/WS2 Nanosheet Composites as Catalysts for the Hydrogen Evolution Reaction

“…Herein, we have produced homogeneous graphene/WS 2 nanosheet composites with a new process of one-step surface-plasma-induced exfoliation from bilayer graphite/ WS 2 . As compared to the other methods in Table 2, our method produces homogeneous graphene/TMD nanosheet composites with many advantages such as a shorter processing time than that of the hydrothermal 16,30,34,37,46 and mechanical and chemical exfoliation 20,21 and CVD 17−19 and easier to control than PLD 22,23 and provides homogeneous 2D composites.…”