In Situ Laser Raman Spectroscopic Study of Anodic Corrosion Films on Nickel and Cobalt

Abstract

In situ laser Raman spectra of anodic corrosion films formed on Ni and Co in 0.05M NaOH have been obtained for the first time and the composition of the surface films deduced. The Raman spectrum of the film found on Ni at about 0.6V vs. Hg/HgO corresponds closely to that of hydrated Ni20~. The anodically formed film on Co at about 0.45V appeared to consist of a mixture of CoO and Co304.

Ni(OH) 2 /NiO/Ni composite nanotube arrays for high-performance supercapacitors

“…The Raman band located at 468 cm -1 is the characteristic peak of Ni(OH) 2 [29]. The bands at 550 and 1067 cm -1 can be attributed to the characteristic peaks of NiO [29,30]. Although the peaks for Ni(OH) 2 and NiO in the XRD pattern of the composite film are absent (Fig.…”

“…6. The Raman band located at 468 cm -1 is the characteristic peak of Ni(OH) 2 [29]. The bands at 550 and 1067 cm -1 can be attributed to the characteristic peaks of NiO [29,30].…”

Raman Spectra of the Anodic Oxide Film on Titanium in Acidic Sulfate and Neutral Phosphate Solutions

“…In situ Raman spectroscopy is one of the promising methods for checking the composition of electrode surface layers (2,3). For some special electrode systems, such as silver with pyridine absorbers, surfaceenhanced Raman scattering (SERS) can be used.…”

Lithium electrochromism of atmospheric pressure plasma jet-synthesized NiO x C y thin films

“…Figure 3 indicates that Ni-OH stretching mode (~455 cm −1 ) and Ni-O vibration mode (~490 cm −1 ) for Ni(OH) 2 are not observed in APPJ-synthesized NiO x C y films [20]. The bands at 530 cm −1 for NiOOH [21] and~1,691 cm −1 for Ni-H stretching mode [22] are not detected in APPJ-synthesized NiO x C y films. In this study, the nickel oxides such as NiOOH and Ni (OH) 2 The main advantages for ECDs are the efficiency in rejecting solar heat gains and admitting daylight.…”