On the composition of the passive film on nickel: a surface-enhanced Raman spectroelectrochemical study

Melendres, C. A.; Pankuch, Mark

doi:10.1016/0022-0728(92)80384-g

Cited by 70 publications

(50 citation statements)

References 21 publications

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“…4 in [193]). From the electrodes held at or above approximately 0.2 V RHE , the authors labelled a peak at 450-456 cm −1 .…”

Section: (Iv) Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

“…Ni(OH) 2 also forms electrochemically on Ni electrodes in alkaline media, which has importance for the development of Ni-based electrocatalysts [23,105,179,[184][185][186][187]. Consequently, the surface electrochemistry has been extensively studied using atomic force microscopy [188], ellipsometry [181,[189][190][191], IR spectroscopy [192], Raman spectroscopy [166,193,194], UV-Vis spectroscopy [192,195], voltammetry [179,185,[196][197][198][199][200][201], X-ray scattering [176], XPS [179,202] and gravimetry with an electrochemical quartz crystal microbalance [203,204]. During a forward voltammetric sweep, a surface bilayer of α-Ni(OH) 2 underlaid by NiO x forms initially [179].…”

Section: (D) Chemical Ageingmentioning

confidence: 99%

“…fig. 5 in [193]) before and after the removal of the fluorescence and water background components. The peak shapes and frequencies of the O−H stretching modes in the resultant spectra closely match the literature values for Ni(OH) 2 and the α and β phase components were readily identified.…”

Section: (Iv) Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

“…Consistent with Kostecki and McLarnon's results, the intensities of the α-phase interlayer water fig. 5(a)-(c) in [193]) were first digitized (upper curves, black) and then the background fluorescence and water components were removed (lower curves, red) using the method illustrated in figure 17. Copyright this work.…”

Section: (Iv) Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

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Nickel hydroxides and related materials: a review of their structures, synthesis and properties

et al. 2015

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This review article summarizes the last few decades of research on nickel hydroxide, an important material in physics and chemistry, that has many applications in engineering including, significantly, batteries. First, the structures of the two known polymorphs, denoted as α-Ni(OH) 2 and β-Ni(OH) 2 , are described. The various types of disorder, which are frequently present in nickel hydroxide materials, are discussed including hydration, stacking fault disorder, mechanical stresses and the incorporation of ionic impurities. Several related materials are discussed, including intercalated α-derivatives and basic nickel salts. Next, a number of methods to prepare, or synthesize, nickel hydroxides are summarized, including chemical precipitation, electrochemical precipitation, sol-gel synthesis, chemical ageing, hydrothermal and solvothermal synthesis, electrochemical oxidation, microwaveassisted synthesis, and sonochemical methods. Finally, the known physical properties of the nickel hydroxides are reviewed, including their magnetic, vibrational, optical, electrical and mechanical properties. The last section in this paper is intended to serve as a summary of both the potentially useful properties of these materials and the methods for the identification and characterization of 'unknown' nickel hydroxide-based samples.

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“…4 in [193]). From the electrodes held at or above approximately 0.2 V RHE , the authors labelled a peak at 450-456 cm −1 .…”

Section: (Iv) Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

Section: (D) Chemical Ageingmentioning

confidence: 99%

Section: (Iv) Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

Section: (Iv) Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

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Nickel hydroxides and related materials: a review of their structures, synthesis and properties

et al. 2015

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“…Further, the possible effects of structural disorder on the reflectivity spectra are unknown. Thus, there is insufficient evidence to 44 The authors collected SERS spectra on Ni electrodes in 0.1 M NaOH during 1 h potentiostatic treatments at various potentials. We note that it is possible that some α-Ni(OH) 2 may have chemically transformed to β-Ni(OH) 2 during the 1 h treatment periods.…”

Section: Nickel Oxide and Nickel Hydroxidesmentioning

confidence: 99%

The Electrochemistry of Metallic Nickel: Oxides, Hydroxides, Hydrides and Alkaline Hydrogen Evolution

Hall

Bock

MacDougall

2013

J. Electrochem. Soc.

233

244

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Ni-based catalysts in aqueous alkaline media are low-cost electrode materials for electrolytic hydrogen generation, a renewable method of producing fuel and industrial feedstock.However, Ni cathodes show a significant decrease in their hydrogen evolution reaction (HER) activity after several hours of electrolysis. Further, industrial electrolysers are often subjected to transient anodic currents, the effects of which on Ni-based catalysts are not well-known. We consider the source of electrode deactivation and the effects of temporary anodic currents on smooth metallic Ni electrodes in alkaline solutions by cyclic voltammetry (CV), galvanostatic and potentiostatic polarization, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Polished surfaces are covered by a bilayer composed of α-Ni(OH) 2 underlaid by nonstoichiometric NiO x . Below the reversible hydrogen electrode (RHE) potential, the air-formed layer mostly reduces to Ni metal and H atoms incorporate deep into the electrode material. Under industrial conditions, i.e., concentrated NaOH/KOH solutions and large cathodic current densities, α-NiH x and β-NiH x can form at the electrode surface. Above the RHE potential, NiO x , α-Ni(OH) 2 , β-Ni(OH) 2 and β-NiOOH form r eversibly and mostly reduce back to Ni on subsequent cathodic polarization. However, repeated oxidation and reduction will introduce strain on a catalyst material, which may lead to its mechanical failure.Hall, D.S.; Bock, C.; MacDougall, B.R. uOttawa/NRC 3

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Surface-enhanced Raman spectroelectrochemical studies of corrosion films on implant Co-Cr-Mo alloy in biosimulating solutions

Wang

et al. 1999

J. Raman Spectrosc.

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On the composition of the passive film on nickel: a surface-enhanced Raman spectroelectrochemical study

Cited by 70 publications

References 21 publications

Nickel hydroxides and related materials: a review of their structures, synthesis and properties

Nickel hydroxides and related materials: a review of their structures, synthesis and properties

The Electrochemistry of Metallic Nickel: Oxides, Hydroxides, Hydrides and Alkaline Hydrogen Evolution

Surface-enhanced Raman spectroelectrochemical studies of corrosion films on implant Co-Cr-Mo alloy in biosimulating solutions

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