Mace-like hierarchical MoS 2 /NiCo 2 S 4 composites supported by carbon fiber paper: An efficient electrocatalyst for the hydrogen evolution reaction

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

“…However, such method has two drawbacks: (i) the electrical insulating binder used to make up slurry will decrease the contact area of catalyst and electrolytes, which will reduce the electrocatalytic performance [35] ; (ii) the attached catalysts are liable to shed out from the electrode under high current density due to the large producing rate of H 2 /O 2 bubbles, which causes a poor stability. In order to overcome the above bottlenecks, people combined the WS catalysts and conductive substrates as the another WS catalysts preparation method, such as carbon paper [36][37][38][39][40][41] , copper foils [42][43][44][45] , FTO [46][47][48][49] , nickel foils [50][51][52][53] , iron substrates [54] , stainlesssteel [51,55] and nickel foam [56][57][58] . As a 3D porous substrate, nickel foam has the advantages of good electrical conductivity (accelerate the diffusion of electrons), high specific surface area (conductive to the dispersion of the catalysts) and the porous structure (diffuse the generated gas in timely) [59,60] .…”

Nowotny phase Mo3+2xSi3C0.6 dispersed in a porous SiC/C matrix: A novel catalyst for hydrogen evolution reaction

“…Although a few precious metals, such as Pt, show high efficiency in the HER, their high cost and low abundance are severe hurdles for large-scale applications. 5,6 Inorganic molybdenum-based compounds, such as molybdenum carbide (Mo 2 C), 7,8 molybdenum boride (MoB), 7 molybdenum phosphide (MoP), [9][10][11] and molybdenum sulfides (MoS x ), [12][13][14] have drawn much attention recently as a possible replacement for Pt-catalysts, because of their d-band electronic density-of-state similar to that of Pt, 15,16 high electric conductivity, and low cost. Besides, in order to avoid aggregation and densification of Mo-based nanoparticles and to improve their intrinsic electric conductivity, carbon-based supports, 17 such as graphene [18][19][20][21] or carbon nanotubes, 18,[22][23][24] were used to disperse Mo-based nanoparticles.…”

One‐step Synthesis of Self‐standing Ni3S2/Ni2P Heteronanorods on Nickel Foam for Efficient Electrocatalytic Hydrogen Evolution over a Wide pH Range

“…fabricated multiphase NiS−NiS 2 −Ni 3 S 2 /NF electrodes showed efficient electrocatalytic activity . Other successful examples were also achieved by MoSe 2 /NiSe 2 composite nanowires, MoS 2 /NiCo 2 S 4 hybrids, CoP/NSGO and so on. Remarkably, the density functional theory (DFT) calculations and previous studies pointed out that the synergism of S and P will bring about a more thermoneutral electron/ion adsorption for HER .…”