A metallic CoS₂ nanopyramid array grown on 3D carbon fiber paper as an excellent electrocatalyst for hydrogen evolution

Abstract

A metallic CoS2 nanopyramid array on 3D carbon fiber paper with ultrahigh HER activity was prepared via solvothermal synthesis.

Ternary NiCoP nanosheet arrays: An excellent bifunctional catalyst for alkaline overall water splitting

“…S5(f) in the ESM) are larger than that of ~4.02 mF/cm 2 for NiCoP nanosheets (Fig. S5(b) in the ESM) [31][32][33]. The NiCo-based oxide (Ni-Co-O), obtained by annealing the Ni-Co precursor in absence of a P source, displays low HER activity, with a large onset overpotential of ~130 mV vs. RHE (Fig.…”

Robust and stable ruthenium alloy electrocatalysts for hydrogen evolution by seawater splitting

“…Moreover, the use of fossil fuels has caused serious damages to the environment [1][2][3][4], therefore the creation of new energy with zero emissions is significantly crucial for low-carbon economy. Among various renewable resources, hydrogen energy has attracted growing interests owing to its merits on zero emission and high efficiency [5][6][7][8][9]. Hydrogen evolution and storage [10,11] are two main aspects for hydrogen energy utilization.…”

A highly active hydrogen evolution electrocatalyst based on a cobalt–nickel sulfide composite electrode

“…34 Catalyst nanostructuring onto conductive substrates is an effective synthetic strategy for increasing the surface area, which leads to an improvement of the HER electrocatalytic activity. 8,10,11 Moreover, the in situ growth of electrocatalytic materials onto binder-free and three-dimensional (3D) substrates plays a crucial role in obtaining composite electrodes with high mechanical stability and strong interface adhesion. 8,11,15 In this work we report a facile synthetic strategy for the fabrication of a multi-phasic cobalt-nickel sulfide HER electrocatalyst supported onto a commercially available Ni foam (Nif).…”

“…8,10,11 Moreover, the in situ growth of electrocatalytic materials onto binder-free and three-dimensional (3D) substrates plays a crucial role in obtaining composite electrodes with high mechanical stability and strong interface adhesion. 8,11,15 In this work we report a facile synthetic strategy for the fabrication of a multi-phasic cobalt-nickel sulfide HER electrocatalyst supported onto a commercially available Ni foam (Nif). Cobalt and nickel sulfide nanoparticles were generated in situ upon thermal pyrolysis of thiourea, due to the formation of reactive sulfurized molecular species that directly react with the metallic atoms.…”