Bimetallic cobalt (Co)-based coatings were prepared by a facile, fast, and low-cost electroless deposition on copper substrate (CoFe, CoMn, CoMo) characterized scanning electron microscopy with energy dispersive X-ray spectroscopy diffraction analysis. Prepared thoroughly examined for hydrogen evolution reaction (HER) oxygen (OER) in alkaline solution (1 M potassium hydroxide, KOH) their activity compared to that of Co Ni coatings. All five showed both reactions, where CoMo the highest HER...

In this paper, the generation of hydrogen from alkaline sodium borohydride solution by hydrolysis is studied. To obtain catalysts for efficient generation, Ni, Mn, Mo, and Co metals were deposited on Cu surface simple electroless metal deposition method using morpholine borane as a reducing agent. Depending peculiarities each metal, coating thickness was ca. 1 μm all catalysts. The coatings compact crack-free, with multilayer characteristics cauliflower-like structure. prepared Ni/Cu,...

The production of high-purity hydrogen from storage materials with further direct use generated in fuel cells is still a relevant research field. For this purpose, nickel-molybdenum-plated copper catalysts (NiMo/Cu), comprising between 1 and 20 wt.% molybdenum, as catalytic for generation, were prepared using low-cost, straightforward electroless metal deposition method by citrate plating baths containing Ni2+–Mo6+ ions source morpholine borane reducing agent. activity the NiMo/Cu toward...

Hydrogen production by water splitting is one of the low-cost green hydrogen technologies. The challenge to develop inexpensive and highly active catalysts. Herein, we present preparation electrocatalysts based on cobalt-phosphorus (Co-P) coatings with different P contents for oxygen evolution reactions (HER OER). Co-P were deposited copper (Cu) surface using simple method electroless metal deposition. morphology, structure, composition Cu studied scanning electron microscopy (SEM) energy...

Electroless cobalt films were deposited from a neutral pH glycinate solution without additives using morpholine borane (MB) as reducing agent. The rate of deposition rises with increase in concentration components (Co ions, MB and glycine), pH. efficiency discharge increases when the is performed Co(II) complex glycine. XPS data indicate that boron oxygen are incorporated into films. Two forms (elemental its oxide) detected electrolessly

A simple way to prepare effective catalysts with low Au loadings for the oxidation of borohydride is presented herein. Gold-cobalt and gold-cobalt-boron were deposited on copper surface (denoted as Au/Co/Cu Au/CoB/Cu) via galvanic displacement technique. The morphology composition have been characterized using FESEM, EDX, TEM ICP-OES. activity Au/CoB/Cu was examined toward by cyclic voltammetry chronoamperometry. It has determined that exhibit a significantly higher stability BH4− ions...

In this study, cobalt-nickel (Co-Ni), cobalt-iron (Co-Fe), cobalt-iron-manganese (Co-Fe-Mn), cobalt-iron-molybdenum (Co-Fe-Mo), and cobalt-zinc (Co-Zn) coatings were studied as catalysts towards the evolution of hydrogen (HER) oxygen (OER). The binary ternary Co deposited on a copper surface using electroless metal plating technique morpholine borane (MB) reducing agent. as-deposited Co-Ni, Co-Fe, Co-Fe-Mn, Co-Fe-Mo, Co-Zn produce compact crack-free layers with typical globular morphology....

Nickel boron (NiB) coatings were deposited onto copper using a nickelglycine (Ni-Gly) plating solution and morpholine borane (MB) as reducing agent. It has been determined that MB agent in the Ni-Gly produces NiB coatings, which exhibit typical cauliflower-like textures. The deposition rate of their composition depend on concentrations ligand (Gly), addition to pH temperature solution. highest (3.42 mg cm–2 h–1) coating was obtained when bath operated at 5 60°C temperature. Using this...


 In this study, the catalytic hydrogen generation was evaluated on cobalt–iron (CoFe), cobalt–iron–manganese (CoFeMn) and cobalt–ironmolybdenum (CoFeMo) coatings deposited Ni foam substrate using electroless metal plating method morpholine borane as reducing agent. The characterisation of surface morphology, structure composition resulted done scanning electron microscopy (SEM) inductively coupled plasma optical emission spectroscopy (ICP-OES). activity prepared CoFe/Ni, CoFeMn/Ni...

Co-B-P-W alloy films were deposited by the electroless plating method on Cu foil and Si wafer with a sputtered PVD TaN/Ta barrier seed substrate. The effects of concentration reactants temperature deposition rate investigated. By variation solution composition, Co-W-P-B coatings containing different amounts boron, phosphorus tungsten can be obtained under slightly acid conditions. Using operating conditions selected 0.5–10.0 at% W, 0.5–16.0 B 1.5–6.0 P obtained. induction period reaction...

Six cobalt gold (CoAu) electrodes were prepared by electroless deposition using different gold-containing solutions (acidic and weakly acidic) Au times. Characterization of CoAu was done scanning electron microscopy with energy-dispersive X-ray spectroscopy, N2-sorption, powder diffraction techniques. The possibility the in environmental applications, i.e., for electrochemical sensing a trace amount arsenic(iii) alkaline media assessed. Employing electrode (prepared immersing Co/Cu into 1 mM...

Electrolysis of water is one low-cost green hydrogen production technologies. The challenge designing and developing high-activity catalysts. Herein, we present a strategy to fabricate flexible electrocatalysts based on nickel-iron (NiFe) alloy coatings. NiFe coatings were plated the copper-coated polyimide surface (Cu/PI) using straightforward electroless metal plating method morpholine borane as reducing agent. It was found that Ni90Fe10, Ni80Fe20, Ni60Fe40, Ni30Fe70 deposited Cu/PI...

The electrolysis of water is one low-cost green hydrogen production technologies. main challenge regarding this technology designing and developing high-activity catalysts. Herein, we present a strategy to fabricate flexible electrocatalysts based on nickel–iron (NiFe) alloy coatings. NiFe coatings were plated the copper-coated polyimide surface (Cu/PI) using straightforward electroless metal-plating method, with morpholine borane as reducing agent. It was found that Ni90Fe10, Ni80Fe20,...

Hydrogen production via water splitting is one of the latest low-cost green hydrogen technologies. The challenge to develop inexpensive and highly active catalysts. Herein, we present preparation electrocatalysts based on cobalt–phosphorus (Co-P) coatings with different P contents for oxygen evolution reactions (HER OER). Co-P were deposited copper (Cu) surface using economical simple method electroless metal deposition. morphology, structure, composition Cu studied scanning electron...

This paper describes the activity of PdCo3O4/C obtained by wet impregnation towards oxygen reduction reaction (ORR). For this purpose, Co3O4/C substrate was synthesized using microwave irradiation heating method with further annealing at 400 °C for 3 h (Co3O4/C-T). Then, initial impregnated palladium chloride (Pd-Cl2-Co3O4/C), and then part Pd-Cl2-Co3O4/C catalyst annealed (PdOCo3O4/C). The electrocatalytic prepared catalysts investigated in alkaline media compared commercial Pt/C (Tanaka...

Au nanoparticles modified Co and CoB coatings deposited on the Cu surface are studied as anode materials for direct NaBH4–H2O2 fuel cells. The catalysts prepared via electroless deposition of or layers followed by galvanic displacement hierarchical Au. performance borohydride–hydrogen peroxide cells (DBHPFCs) using Au/Co/Cuor Au/CoB/Cu Pt cathode is at different temperatures. A 1 M NaBH4 + 4 NaOH solution used anolyte 5 H2O2 1.5 HCl catholyte, with a Nafion N117 membrane separating two...

In the present study, carbon-derived material from pulping residues, such as black liquor, was doped with a cheap nitrogen precursor, dicyandiamide, and after that modified cobalt nanoparticles using electroless metal plating. The morphology, structure composition of synthesised catalyst characterised TEM, XPS, Raman Spectroscopy ICP-OES, whereas activity prepared evaluated for electro-reduction oxygen in an alkaline medium by employing rotating disk electrode method. It has been determined...

A simple way to prepare effective catalysts with low Au loadings for the oxidation of borohydride is presented herein. Gold-cobalt and gold-cobalt-boron were deposited on copper surface (denoted as Au/Co/Cu Au/CoB/Cu) via galvanic displacement technique. The morphology composition fabricated have been characterized using Field-Emission Scanning Electron Microscopy, Energy Dispersive X-ray Analysis diffraction. electrochemical behavior Au/CoB/Cu different was examined towards BH 4 – ions in...

In this study, Mn-based multicomponent catalysts supported by two different carriers (lightweight expanded clay aggregate and the Ukrainian clinoptiolite) were prepared electroless metal deposition method tested for selective catalytic reduction of NO with ammonia (NH3-SCR de-NO). Prior to activity test, all characterized inductively coupled plasma optical emission spectroscopy, field scanning electron microscopy (FESEM), energy dispersive X-ray mapping, photoelectron H2-TPR NH3-TPD...