tailieunhanh - Electrochemical deposition of NiCu alloys in citrate solutions

This paper presents the research results on electrochemical deposition of NiCu alloy films in containing citrate solutions. Influence of the concentration of the metallic ions to the electrodeposition was studied using linear polarization method. Alloy films have been fabricated by potentiostatic and galvanostatic methods. Element composition and morphology surface of the films was analyzed using EDS and SEM methods. | Vietnam Journal of Chemistry, International Edition, 55(5): 585-588, 2017 DOI: Electrochemical deposition of NiCu alloys in citrate solutions Uong Van Vy*, Le Xuan Que Institute for Tropical technology, Vietnam Academy of Science and Technology Received 26 December 2016; Accepted for publication 20 October 2017 Abstract This paper presents the research results on electrochemical deposition of NiCu alloy films in containing citrate solutions. Influence of the concentration of the metallic ions to the electrodeposition was studied using linear polarization method. Alloy films have been fabricated by potentiostatic and galvanostatic methods. Element composition and morphology surface of the films was analyzed using EDS and SEM methods. The polarization curves are divided into two distinct regions, the more positive potential than V/SCE is the discharge of Cu2+ with the critical current density, the more negative potential than V/SCE is the co-discharge of Cu2+ and Ni2+ to alloying of NiCu. The presence of Ni2+ promotes Cu2+ discharge with critical current density at electrode potential V/SCE. When the cathode potential decrease causes Ni composition increased and the Cu composition decreased. Cathode current density in the range of -4 to -8 mA/cm2 strong influence on the alloy composition, Ni composition increases with cathode current density. Keywords. NiCu alloy films, electrodeposition, electrodes, hydrogen evolution reaction, alkaline solution. 1. INTRODUCTION NiCu alloy plating not only has good corrosion resistance and mechanical properties, but also has catalytic activity for hydrogen evolution reaction (HER) in alkaline solutions [1-10]. In order to fabricate electrodes that have high catalytic activity for HER, hydrogen adsorption and desorption kinetics were need to be considered together, which are characterized by the hydrogen binding energy (BEH) at the surface of the catalyst. The alloying elements such as .

• Hoá học
• Vietnam Journal of Chemistry
• Electrochemical deposition of NiCu alloys in citrate solutions
• NiCu alloys in citrate solutions
• NiCu alloy films
• EDS and SEM methods
• Membrane processes and their potential applications
• Fresh water provision in Vietnam
• Mature and emerging membrane processes destined
• Pressure driven filtration
• Anticaries activity of mangiferin
• Mangifera indica leaves in Vietnam
• Vietnamese Mangifera indica leaves
• Acid production and biofilm formation
• Mangiferin possesses moderate anticaries activity against
• Screening for the main triterpenic acids
• Centella asiatica samples
• North and South of Vietnam
• The main triterpenic acids
• Both triterpenic acids
• Nanosilica chitosan hybrid on leaf blast
• Blight diseases of rice in Vietnam
• Particularly for rice
• The leaf blast disease index
• Fissistigma oldhamii
• Growing in Vietnam
• Influence of operating conditions and membrane fouling
• Water flux during seawater desalination
• Air gap membrane distillation
• Seawater AGMD desalination
• Remote communities in Vietnam
• Vietnam journal of earth sciences
• Fluid characteristics from shallow magmatic environments
• Contribution to danburite bearing Luc Yen pegmatites
• Shallow magmatic environments
• Fluid inclusions show the same chemistry
• Journal of Chemistry
• Further chemical constituents
• Scoparia dulcis L
• Scrophulariaceae originating
• The MeOH extract
• Study on change of color
• High density polyethylene organo modified calcium carbonate composites exposed naturally
• Dong Hoi Quang Binh
• Modified calcium carbonate
• Synthesis and electrochemical performance of MoO2 graphene nanomaterials
• Synthesis and electrochemical performance
• Anode for lithium ion battery
• Molybdenum dioxide graphene composites
• Indicated graphene composition
• Phytochemical and cytotoxic investigations
• The lichen Stereocaulon evolutum Graewe
• Algal cyanobacterial symbioses
• Searching cytotoxic compound
• Preparation of some new benzo[d]thiazole derivatives
• New benzo[d]thiazole derivatives
• Both phenolic hydroxyl group
• Mass spectral analyses
• Quantum chemical computation insight
• The donor acceptor bond interaction
• Silver complexes with tetrylene
• N heterocyclic tetrylene
• Bond dissociation energy
• Quantum chemical calculations
• 5 fluorouracil encapsulated CS mPEG nanogels
• Controlling drug release
• Characterize poly methyl ether
• Fourier transform infrared
• Proton nuclear magnetic resonance
• Preparation and characterization of nanosilica from rice husk ash
• Chemical treatment combined with calcination
• Rice husk ash
• X ray diffraction
• X ray spectroscopy
• Large scale fabrication
• Colloidal nano sized CuCl solution
• High concentration for using as fungicide for plant
• Fungicide for plant
• The effect of combustion temperature
• Low tar gas production
• Oxygen enriched air
• The producer gas
• The lower heating value
• Degradation of tartrazine dye from aqueous solution
• Heterogeneous fenton like reaction
• Fe2O3 SiO2 composite
• Scanning electron microscopy
• Thermokinetic study of the isomerization of isocyanic acid
• The isomerization of isocyanic acid
• Kinetics and thermochemistry
• Rice Ramsperger KasselMarcus
• Synthesis of new hemiasterlin derivatives
• α
• β unsaturated carbonyl thiophene groups in fragment A
• New hemiasterlin derivatives
• The high reactivity
• Mg Al MoO4 layered double hydroxides
• Catalysts for the oxidation of styrene
• The oxidation of styrene
• The synthesized solids showed the layered hydroxide structure
• Two cycloartanes type triterpenoid from Homonoia riparia Lour
• Two cycloartanes type triterpenoid
• Homonoia riparia Lour
• Various chromatography methods
• Study on adsorption of phosphate from aqueous solution
• Phosphate from aqueous solution by nanomaterial CeO2
• X ray diffraction
• Chemical constituents and their biological activity of Pinus dalatensis
• Terpenoids from the leaves
• Acute myeloid leukemia
• The basic of spectroscopic methods
• Effect of chromium substituted
• Structural and magnetic characterization lithium ferrite nanoparticles
• Small degree of site interchange
• The tetrahedral sites