Electrodeposition of thin-film rare-earth-metal oxocuprates

Janes, Robert R.; Monk, Paul; Partridge, Robert D.; Hall, Simon B.

doi:10.1039/jm9960600183

Cited by 10 publications

(9 citation statements)

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“…The author's previous research results had shown that with the existence content of La ions, the atomic percentages of Mo and La atoms gradually increase and the content of Ni atoms gradually decreases [4,5]. This can be defined as Ni-Mo-La ternary composite coating with the coexistence of Ni, Mo, and La three elements, which may be consistent with the three elements induced co-deposition [10][11][12][13][14][15]. The diffraction pattern of the composite shows a strong diffraction peak at near 2θ ≈ 43 • , which belongs to the Ni-Mo composite from the coating (PDF Card-00-048-1745 Ni-Mo, A Powder Diffraction File (PDF) Card displays all of the scientific and bibliographic data available for a particular PDF entry and the composites structure).…”

Section: Composition and Structure Of Coatingsupporting

confidence: 53%

“…The surface of the coating sample is scanned by a raster scan, the surface scan area, and the results of composition are shown on the right side of Figure 1. [8,9,[11][12][13][14][15], the XRD curve and phase composition of the composite show that the composite may contain intermetallic LaNi 5 and La 2 NiMo phase, which strongly adsorb H atoms. The introduction of H atoms makes the grain fine and the formation of a uniform dense coating with a smooth surface and small particles, as shown in Figure 2.…”

Section: Composition and Structure Of Coatingmentioning

confidence: 99%

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Electrodeposition Behavior of Polycrystalline Ni–Mo–La Composite in Alkaline Solution

Chen

et al. 2018

Coatings

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Abstract:The polycrystalline Ni-Mo-La composite coating was obtained by electrodeposition through the addition of La 3+ ions into Ni, Mo ions main salt weak alkaline solution. The obtained composite contain 0.92 at.% La. According to the law of ionic activity, the redox reaction of three kinds of metal atoms was studied by polarography and cyclic voltammetry. It was found that the addition of lanthanum ions changed the composite structural, phase, and element, and the OH − ions were deduced during the electrodeposition in alkaline solution. The introduction of lanthanum and molybdenum ions negatively shifted the reduction potential of nickel ions and broadened the peaks significantly in the deposition process, retarding the reduction and deposition rate of Ni ions, which was characterized by a multi-step reduction process of Mo and La metal atoms.

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Section: Composition and Structure Of Coatingsupporting

confidence: 53%

Section: Composition and Structure Of Coatingmentioning

confidence: 99%

Electrodeposition Behavior of Polycrystalline Ni–Mo–La Composite in Alkaline Solution

Chen

et al. 2018

Coatings

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“…45 A question to be addressed is therefore to determine and/or select the proper base precursor. Several chemical routes have been discussed in the course of electrodeposition of oxide compounds depending on the nature of the dissolved reducible species: water ͑as solvent 32,46 or in solvent mixtures [20][21]28,47 ͒, nitrate ion, [26][27]35,48 molecular oxygen, 34,49 or hydrogen peroxide. [22][23][50][51][52] According to the classical scheme, the reduction reaction commonly gives rise to hydroxide ions, causing local precipitation with metal ions in the form of colloidal particles at the cathode surface.…”

mentioning

confidence: 99%

Electrochemical Codeposition of Copper-Strontium Hydroxide Films from Dimethylsulfoxide Solutions

Lepiller

Poissonnet

Bonnaillie

et al. 2004

J. Electrochem. Soc.

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The cathodic electrodeposition technique has been applied to the binary Cu͑II) ϩ Sr͑II) system in nitrate-dimethylsulfoxide solution, with use of voltammetry as a prerequisite to thin-film synthesis. The electrochemical study was performed under diffusion and convection regimes as a function of the concentration ratio r ϭ ͓Sr͑II͔͒/͓Cu͑II)] and resulted in the choice of a solution with r ϭ 5 for deposition experiments. Films were grown potentiostatically and galvanostatically at room temperature on silver tapes. Electrolytic deposition was followed by annealing for 4 min in air at 880°C. Both series were then analyzed by chronoamperometry, X-ray diffraction, electron microprobe analysis, and scanning electron microscopy. Inside the parameter ranges determined by electrochemistry, as-grown and annealed films were homogeneous, pinhole-free, and adherent. The best quality was seen in the galvanostatic mode due to accurate control of the overall deposition rate. Copper was electrodeposited as a metal by diffusion-limited reduction of Cu͑II͒ ions, while strontium was precipitated as a hydroxide by electrogeneration of base in the water reduction range. Codeposition was found to give rise to separated phases, involving a microcrystalline strontium hydroxide layer surrounding a nanocrystalline copper underlayer, which was surrounded by copper surface clusters. Annealed films were composed of various mixtures of strontium cuprate phases, whose composition was directly related to the strontiumcopper atomic ratio in the precursor films.

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“…Previous applications of cathodic precipitation include the preparation of precursors to pre-shaped ceramic bodies [2], superconducting oxides [3][4][5][6], and electrochromic films [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Characterisation and humidity-sensing properties of aluminium (oxy)-hydroxide films prepared by cathodically induced precipitation

Mortimer

Mayes

2007

Sensors and Actuators B: Chemical

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Electrodeposition of thin-film rare-earth-metal oxocuprates

Cited by 10 publications

References 7 publications

Electrodeposition Behavior of Polycrystalline Ni–Mo–La Composite in Alkaline Solution

Electrodeposition Behavior of Polycrystalline Ni–Mo–La Composite in Alkaline Solution

Electrochemical Codeposition of Copper-Strontium Hydroxide Films from Dimethylsulfoxide Solutions

Characterisation and humidity-sensing properties of aluminium (oxy)-hydroxide films prepared by cathodically induced precipitation

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