Optical, spectroelectrochemical and structural properties of sol-gel derived Ni-oxide electrochromic film

Šurca, Angelja Kjara; Orel, B.; Pihlar, Boris; Bukovec, Peter

doi:10.1016/0022-0728(96)04509-3

Cited by 156 publications

(68 citation statements)

References 55 publications

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“…Synthesis of nickel oxide nanostructures of various shapes and sizes including nanoparticles, nanorods, nanowires, nanosheets, etc., have been attempted by employing different fabrication methods such as spray pyrolysis [13], sol-gel technique [14], electrodeposition [15], and hydrothermal method [16]. However, synthesis of vertically aligned 2D nanostructures of NiO has been seldom reported [11,12,17].…”

Section: Introductionmentioning

confidence: 99%

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

Kumari

Li²,

Vannoy

et al. 2009

Cryst. Res. Technol.

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Vertically aligned and well interconnected NiO nanowalls with thin nanodiscs of cubic NiO as the in situ formed building blocks were fabricated via a template-free approach. The alkaline solution of ammonium hydroxide was used as a reductant and Ni foil as both source material and substrate for the nanowall synthesis. Surface morphology analysis confirmed the formation of 15 nm thick and 0.2−1.5 µm wide nanowalls. The nanowalls had the crystal structure of cubic NiO with their growth plane along the [111] direction. An optical band gap of about 3.8 eV for the NiO nanowalls was obtained from the optical absorption measurement. NiO nanowalls exhibited a broad UV emission band centered at around 390 nm. This simple, but efficient synthesis technique can facilitate the growth of well aligned 2D nanostructures with large surface area for possible applications in nanoscale devices.

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Section: Introductionmentioning

confidence: 99%

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

Kumari

Li²,

Vannoy

et al. 2009

Cryst. Res. Technol.

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“…The potential of forming nickel perhydroxide is much lower than that of water decomposition. Nickel electrodes have been applied to an electrochromic device [8], alkaline battery [9], and as a electrocatalyst [10,11]. Most of the applications are on the basis of the redox pair, Ni(OH) 2 aNiOOH [12,13].…”

Section: Introductionmentioning

confidence: 99%

An Amperometric Alcohol Sensor by Using Electroless Nickel as Working Electrode

Liao

Chou

2000

Electroanalysis

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An amperometric alcohol sensor by using electroless nickel as working electrode was developed. The sensing results were affected by the electrolyte composition, deposition time, and temperature of the electroless nickel. The results revealed that the best operating conditions of the electroless nickel were 70 C deposition temperature, 20 min deposition time, and 2.632 ratio of reducing agent to nickel ion in the solution. The results also indicated that the response time of the prepared alcohol sensor is in the range from 10 to 13 s and the best sensitivity is 8.7 mAappm6cm 2 .

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“…When nanostructured NiO is employed in the configuration of thin film (thickness, l < 10 µm) it displays photoelectrochemical activity in the presence of opportune redox mediators (e.g., the redox couple I − /I 3 − ) [24]. Moreover, nanostructured films of NiO present solid-state electroactivity [25][26][27] due to the verification of a series of reversible electrochemical processes that switch the properties of electrical transport [28] and optical absorption [29] of the oxide itself. The optical [10][11][12][13][14]30,31], magnetic [32,33], electrochemical [34], and photoelectrochemical [35,36] properties of NiO (either in the bulk state or in the nanostructured version) are considerably altered when the surface of the oxide is dye-sensitized [37].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sensitization on the Electrochemical Properties of Nanostructured NiO

et al. 2018

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Screen-printed NiO electrodes were sensitized with 11 different dyes and the respective electrochemical properties were analyzed in a three-electrode cell with the techniques of cyclic voltammetry and electrochemical impedance spectroscopy. The dye sensitizers of NiO were organic molecules of different types (e.g., squaraines, coumarins, and derivatives of triphenyl-amines and erythrosine B), which were previously employed as sensitizers of the same oxide in dye-sensitized solar cells of p-type (p-DSCs). Depending on the nature of the sensitizer, diverse types of interactions occurred between the immobilized sensitizer and the screen-printed NiO electrode at rest and under polarization. The impedance data recorded at open circuit potential were interpreted in terms of two different equivalent circuits, depending on the eventual presence of the dye sensitizer on the mesoporous electrode. The fitting parameter of the charge transfer resistance through the electrode/electrolyte interface varied in accordance to the differences of the passivation action exerted by the various dyes against the electrochemical oxidation of NiO. Moreover, it has been observed that the resistive term R CT associated with the process of dark electron transfer between the dye and NiO substrate is strictly correlated to the overall efficiency of the photoconversion (η) of the corresponding p-DSC, which employs the same dye-sensitized electrode as photocathode.

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Optical, spectroelectrochemical and structural properties of sol-gel derived Ni-oxide electrochromic film

Cited by 156 publications

References 55 publications

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

An Amperometric Alcohol Sensor by Using Electroless Nickel as Working Electrode

Effect of Sensitization on the Electrochemical Properties of Nanostructured NiO

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