Search results for " Ni–Co Alloy"

showing 3 items of 3 documents

Ni alloy nanowires as high efficiency electrode materials for alkaline electrolysers

2021

Abstract The fabrication and characterization of nickel-alloy electrodes for alkaline electrolysers is reported. Three different alloys (Ni–Co, Ni–Zn and Ni–W) at different composition were studied in order to determine the optimum condition. Nanostructured electrodes were obtained by template electrodeposition into a nanoporous membrane, starting from aqueous solution containing the two elements of the alloy at different concentrations. Composition of alloys can be tuned by electrolyte composition and also depends on the difference of the redox potential of elements and on the presence of complexing agents in deposition bath. Electrochemical and electrocatalytic tests, aimed at establishin…

Materials scienceFabricationAlloyNanowireEnergy Engineering and Power Technology02 engineering and technologyengineering.material010402 general chemistryElectrochemistry01 natural sciencesRedoxchemistry.chemical_compoundSettore ING-IND/17 - Impianti Industriali MeccaniciAlkaline electrolyzer Nanostructured electrodes Ni–Co Alloy Template electrosynthesisPotassium hydroxideAqueous solutionRenewable Energy Sustainability and the Environmenttechnology industry and agricultureequipment and supplies021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesSettore ING-IND/23 - Chimica Fisica ApplicataFuel TechnologyChemical engineeringchemistryElectrodeengineering0210 nano-technologyInternational Journal of Hydrogen Energy
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Nanostructured Ni–Co alloy electrodes for both hydrogen and oxygen evolution reaction in alkaline electrolyzer

2021

Abstract Ni–Co alloy nanostructured electrodes with high surface area were investigated both as a cathode and anode for an alkaline electrolyzer. Electrodes were obtained by template electrosynthesis at room temperature. The electrolyte composition was tuned in order to obtain different NiCo alloys. The chemical and morphological features of nanostructured electrodes were evaluated by EDS, XRD and SEM analyses. Results show that electrodes with different composition of Ni and Co, made of nanowires well anchored to the substrate, were obtained. For both hydrogen and oxygen evolution reactions, electrochemical and electrocatalytic tests, performed in 30% w/w KOH aqueous solution, were carried…

Materials scienceHydrogenEnergy Engineering and Power Technologychemistry.chemical_element02 engineering and technology010402 general chemistryElectrosynthesisElectrochemistry01 natural sciencesSettore ING-INF/01 - Elettronicalaw.inventionlawSettore ING-IND/17 - Impianti Industriali MeccaniciTafel equationElectrolysisRenewable Energy Sustainability and the EnvironmentAlkaline water electrolysisOxygen evolution021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesAnodeFuel TechnologySettore ING-IND/23 - Chimica Fisica ApplicataChemical engineeringchemistry0210 nano-technologyAlkaline electrolyzer HER Nanostructured electrodes Ni–Co Alloy OER Template electrosynthesis
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Microbial Fuel Cell with Ni–Co Cathode Powered with Yeast Wastewater

2018

Wastewater originating from the yeast industry is characterized by high concentration of pollutants that need to be reduced before the sludge can be applied, for instance, for fertilization of croplands. As a result of the special requirements associated with the characteristics of this production, huge amounts of wastewater are generated. A microbial fuel cell (MFC) forms a device that can apply wastewater as a fuel. MFC is capable of performing two functions at the same time: wastewater treatment and electricity production. The function of MFC is the production of electricity during bacterial digestion (wastewater treatment). This paper analyzes the possibility of applying yeast wastewate…

cathodeControl and OptimizationMicrobial fuel cellyeast wastewaterEnergy Engineering and Power TechnologySewage02 engineering and technology010501 environmental scienceslcsh:Technology01 natural sciencesmicrobial fuel cell; yeast wastewater; environmental engineering; renewable energy source; cathode; Ni–Co alloyIndustrial wastewater treatmentmicrobial fuel cellElectrical and Electronic EngineeringEngineering (miscellaneous)0105 earth and related environmental sciencesenvironmental engineeringlcsh:TRenewable Energy Sustainability and the Environmentbusiness.industryChemical oxygen demand021001 nanoscience & nanotechnologyPulp and paper industryWaste treatmentWastewaterEnvironmental scienceSewage treatmentNi–Co alloyrenewable energy source0210 nano-technologyEnergy sourcebusinessEnergy (miscellaneous)Energies
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