Alkaline water electrolyzers promise very high purity hydrogen gas production but suffer from large overpotential for anodic oxygen evolution reaction (OER). Here we describe the effect of lithium (Li+)-substitution into nickel oxide on the electrocatalytic activity towards OER in alkaline elect...

We examine the redox activity of nickel/nickel oxide foils. Thin nickel foils (2.5 µm, 10 µm, and 100 µm) were subjected to redox conditions in a fixed-bed reactor within 800–1000 °C, and samples were examined using SEM at different stages of conversion. We identify some key features or the...

The flexible solid-state battery supercapacitor hybrid (SBS) is one of the promising energy storage devices for wearable electronic devices. Surface properties of active materials play important roles on electrolyte/active material interaction and energy storage ability. This work applies nickel...

To resolve the energy crisis and environment pollution, it is urgent to explore highly efficient and inexpensive catalysts for hydrogen evolution reaction (HER). In this work, we fabricate nickel oxide/nickel carbide/graphene (labeled as NNG) composite via one-step thermal treatment of NiCl2/gra...

In this work, synthesis of nickel oxide (NiO) using nickel acetate as a starting material by sol–gel method and then deposited as collide on glass slides to form thin layers of NiO by spin-coating technique with high photo-catalytic activity using as self cleaning coating. These films of NiO we...

In this work, nickel-graphene and nickel-graphene oxide composite electrodes were employed as anodes in the electrocatalytic oxidation of urea in an alkaline solution. These composite electrodes have a higher surface area than the unmodified nickel electrode. As the current density increases dur...

Oxygen in air is an eco-friendly and economical oxidant, and catalytic air oxidation technology have a great potential to sustain effective wastewater treatment. Here we report a novel cathodic air oxidation process under the catalysis of a [email protected] oxide composite loaded on a porous gr...

Assembly of the efficient flexible energy storage devices is indispensable for widening the application of the wearable electronics which require electricity for operating. The flexible substrate such as Ni foam and carbon cloth is one of the key components for establishing flexible energy stora...

In this study, the nickel selenide (Ni0.85Se) nanoparticles with uniform size are synthesized in different solvents (glycerol, benzyl alcohol, and 2-phenylethanol) by one-step solvothermal method without any surfactant and template. The specific capacity of the Ni0.85Se nanoparticles prepared in...

NiSe (Nickel selenide) alloy films were prepared by non-vacuum based and cost feasible screen-coating route. Most favorable conditions for synthesis of good quality screen-coated films were obtained. The films thus prepared were studied for their structural, optical and electrical characterizati...

Nickel selenide and nickel nanoparticles integrated into a three-dimensional N-doped porous carbon matrix (NiSe/Ni/NC) have been developed as bi-functional electrocatalysts for highly efficient and stable water splitting. The structure of as-prepared NiSe/Ni/NC are characterized by scanning elec...

NiSe2 and Ni1-xSe (x = 0–0.15) were successfully synthesized by a simple way, including composite-salt-mediated method (CSM), composite-salt-hydroxide-mediated method (CHSM) and solvothermal method, etc. It was found that the phase structure and morphology of the products were mainly influenced...

Nickel selenides (Ni3Se2), which boast a narrow band gap and high conductivity, have gained widespread attention for their potential use in water electrolysis sytems and dye-sensitized solar cells. We report herein the in situ fabrication of nickel selenide nanosheet arrays on nickel (Ni) foam (...

Surface modification of nanostructured catalysts is fundamental in accelerating sluggish oxygen evolution reaction (OER). Herein we demonstrate that nanostructured Nickel Selenide (NiSe2) exhibits excellent capability for OER owing to the high compatibility between (200) plane and alkaline solut...

Understanding the inherent activity of an electrocatalyst is an effective way of studying its optimization conditions for harvesting better performance. In this, we studied the inherent electrocatalytic activity of nickel selenide catalysts of three different stoichiometry such as Ni0.85Se, Ni3S...

In a solid oxide carbon fuel cell (SO-CFC), it has been widely believed that solid-state carbonaceous materials would directly take part in electrochemical reaction to generate electrons. Of late, however, it is predicted that further-oxidizable gas-state molecules, such as CO, hydrocarbons, pla...

Treatment of Ni-EDTA in industrial nickel plating effluents was investigated by integrated application of Fenton and ozone-based oxidation processes. Determination of integrated sequence found that Fenton oxidation presented higher apparent kinetic rate constant of Ni-EDTA oxidation and capacity...

The electrochemical response of mixed Ni(OH)2 and Fe(OH)2 electrodes prepared either by chemical coprecipitation or layer by layer precipitation in alkaline solutions at 25°C was studied. Ni(OH)2 coprecipitated with Fe(OH)2 forms a mixed hydrated oxide with specially high catalytic activity tow...

The oxidation of ferrous-nickelous hydroxide in chloride-containing aqueous media gives for values of P = Fe/Ni greater than one-third, an hydroxychloride isomorphous to Green Rust 1, 3Fe(OH)2 · Fe(OH)2Cl · nH2O, where Ni2+ ions substitute for Fe2+ ions. At P = 13, stoichiometry is reached and...

Nickel oxide/Au porous nanobelts were synthesized by hydrolysis of nickel (II) sulfate in the presence of Au nanoparticles under hydrothermal condition and subsequent calcination of Ni(OH)2/Au precursor in air. XPS measurement indicated the existence of both NiO and Ni2O3 in nickel oxide/Au poro...