Ce-Doped Ni–S nanosheets on Ni foam supported NiMoO₄ micropillars: fast electrodeposition, improved electrocatalytic activity and ultralong durability for the oxygen evolution reaction in various electrolytes

Abstract

A CeNiS@NiMoO4/nickel foam integral electrode with superior electrocatalytic activity for the OER was successfully constructed at room temperature.

NiFe double hydroxide coated on sulfur-modified NiMoO4 nanorods as core–shell structured catalysts for the oxygen evolution reaction

“…S 2− confirms the existence of metal–S bonds. 8,17 Positive shifts of 0.2 eV and 0.3 eV occurred for SO 4 2− and S 2− in NiFe LDH@S-NiMoO 4 , which indicated the strong interaction between NiFe LDH and S-NiMoO 4 . The content of the two chemical states of S in the samples after deposition changed, indicating that part of the S 2− was oxidized to SO 4 2− during the electrodeposition process.…”

“…S 2− conrms the existence of metal-S bonds. 8,17 Positive shis of 0. two peaks at 726.5 eV and 714.0 eV are from Fe 3+ and the two peaks at 724.3 eV and 711.0 eV are from Fe 2+ which can be detected in the Fe 2p 1/2 and Fe 2p 3/2 orbitals. 42 Two peaks from recombination satellites (Sat.)…”

“…[5][6][7] Electrochemical water splitting is an important energy storage method, which can convert the excess electric energy into H 2 chemical energy. 8 However, the oxygen evolution reaction (OER), the oxidative half-reaction of water splitting, has plagued its industrial application due to its corresponding four-electron transfer process and slow kinetics. [9][10][11] Although noble metal oxides (RuO 2 and IrO 2 ) are considered to be the state-of-the-art OER catalysts, their industrial applications are signicantly hindered by their insufficient resources and high cost.…”

Anchoring Ce-modified Ni(OH)2nanoparticles on Ni-MOF nanosheets to enhances the oxygen evolution performance

“…The measured potential value is converted to a reversible hydrogen electrode (RHE) using the Nernst equation (E RHE = E Ag/AgCl + 0.197 V + 0.059 × pH). The overpotential (η) is calculated using the equation: η = E RHE − 1.23 V. [29][30][31] Electrochemical Impedance Spectroscopy (EIS) is conducted in the frequency range from 100 kHz to 100 MHz at 1.51 V vs. RHE.…”

Recent developments and future perspectives on energy storage and conversion applications of nickel molybdates

“…This is so because this strategy offers the most convenient processes and yet conducive outcomes. Table 6 is to impart a brief account of a host of developments in catalytic properties of NiMoO 4 done involving heterostructures and hybrids 121,123,256‐382 . in many cases, doping, defect and/or morphology engineering have been amalgamated with the heterostructure for superior enhancement in catalytic properties either to generate more surface area or more population of active sites or for other special necessities as summarized in Table 6.…”