Electrodeposition and characterization of nanostructured black nickel selective absorber coatings for solar–thermal energy conversion

Lizama-Tzec, F. I.; Macías, J. D.; Estrella‐Gutiérrez, M. A.; Cahue-López, A. C.; Arés, O.; Coss, Romeo de; Alvarado‐Gil, J. J.; Oskam, Gerko

doi:10.1007/s10854-014-2195-5

Cited by 33 publications

(18 citation statements)

References 42 publications

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“…17 Unfortunately, these strategies require several processing steps and have a high cost due to the utilization of Ni and its alloys as the parent materials to produce the dark-coloured inorganic layer. Previous investigation reported that incorporation of Ni ions on TiO 2 matrix could enhanced the catalytic and photocatalytic properties of TiO 2 lms.…”

Section: 3mentioning

confidence: 99%

Decoration of an inorganic layer with nickel (hydr)oxide via green plasma electrolysis

Fatimah

Khoerunnisa

2018

RSC Adv.

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In this study, we describe the green plasma electrolysis of a magnesium alloy in alkaline electrolyte to produce a hybrid inorganic layer with nickel (hydr)oxide incorporated in a matrix of magnesium oxide, and investigate the electrochemical and optical properties of this material. The addition of Ni(NO 3 ) 2 $6H 2 O to the electrolyte reduced the size of the micro-defects found in the inorganic layer after plasma electrolysis by inducing soft plasma discharges. As a result, through cyclic voltammetry and polarization tests, the corrosion stability of the sample containing nickel (hydr)oxide was significantly enhanced. Measurement of the optical properties reveals that the material possesses excellent energy efficiency as indicated by a high solar absorptivity of $0.92 and a low infrared emissivity of $0.13 which are presumably due to the inherent dark-brown colour of nickel (hydr)oxide. We expect that these results will have implications in the development of functional materials with excellent optical and corrosion properties by considering green processing utilizing alkaline electrolyte.

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Section: 3mentioning

confidence: 99%

Decoration of an inorganic layer with nickel (hydr)oxide via green plasma electrolysis

Fatimah

Khoerunnisa

2018

RSC Adv.

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“…For the comparison to spectrally resolved data obtained with our new facility, we chosen the normal emittance acquired at 2.7, 5, 5.5 μm wavelength (filter FWHM: 100 nm) and the integrated emittance in the band 8-14 μm. Finally, as additional evaluation, following the approach consolidated in the literature [5,22,24,[27][28][29][30] we estimated the sample hemispherical emittance from room-temperature hemispherical reflectance spectra as detailed in the next paragraph. The reflectance was acquired using a UV-Vis-NIR spectrophotometer (Lambda900 by Perkin Elmer) for the 0.3-2.5 µm spectral range and a Fourier-transform-IR spectrophotometer (Excalibur by BioRad) spectrophotometer for the range 1.6-17 µm, both equipped with accessories for hemispherical reflectance measurement.…”

Section: Experimental 21 Setupmentioning

confidence: 99%

“…The data are compared with nearlymonochromatic measurements carried out at 2.7 µm, 5.0 µm and 5.5 µm and in the band 8-14 µm, in a solar furnace research facility (PROMES-CNRS, France). Moreover, the obtained experimental spectral curve at 1080 K temperature in the range 2.5-20.0 µm is compared to the literature approach of estimating the emittance from room-temperature reflectance spectra by means of the Kirchhoff's law [5,[22][23][24][25][26][27][28][29][30], thus assessing the reliability of the approximation.…”

Section: Introductionmentioning

confidence: 99%

Facility for assessing spectral normal emittance of solid materials at high temperature

2015

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Spectral emittance is a key topic in the study of new compositions, depositions, and mechanical machining of materials for solar absorption and for renewable energies in general. The present work reports on the realization and testing of a new experimental facility for the measurement of directional spectral emittance in the range of 2.5-20 μm. Our setup provides emittance spectral information in a completely controlled environment at medium-high temperatures up to 1200 K. We describe the layout and first tests on the device, comparing the results obtained for hafnium carbide and tantalum diboride ultrarefractory ceramic samples to previous quasi-monochromatic measurements carried out in the PROMES-CNRS (PROcedes, Materiaux et Energie Solaire- Centre National de la Recherche Scientifique, France) solar furnace, obtaining a good agreement. Finally, to assess the reliability of the widely used approach of estimating the spectral emittance from room-temperature reflectance spectrum, we compared the calculation in the 2.5-17 μm spectral range to the experimental high-temperature spectral emittance, obtaining that the spectral trend of calculated and measured curves is similar but the calculated emittance underestimates the measured value.

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“…Solar energy is the most promising sustainable energy source among the existing sources of renewable energy and it can be converted to thermal energy by using solar collectors. The efficiency of conversion of solar energy into heat energy is mainly determined by the optical properties of the surface of the absorber, which should show strong absorption of solar radiation [ 4 , 5 , 6 , 7 ]. Photothermal materials convert light to heat and are widely used as absorbers.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Near Infrared Photothermal Conversion Properties of Reduced Tungsten Oxide/Polyurethane Nanocomposites

Chala

Chou

et al. 2017

Nanomaterials

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In this work, novel WO3-x/polyurethane (PU) nanocomposites were prepared by ball milling followed by stirring using a planetary mixer/de-aerator. The effects of phase transformation (WO3 → WO2.8 → WO2.72) and different weight fractions of tungsten oxide on the optical performance, photothermal conversion, and thermal properties of the prepared nanocomposites were examined. It was found that the nanocomposites exhibited strong photoabsorption in the entire near-infrared (NIR) region of 780–2500 nm and excellent photothermal conversion properties. This is because the particle size of WO3-x was greatly reduced by ball milling and they were well-dispersed in the polyurethane matrix. The higher concentration of oxygen vacancies in WO3-x contribute to the efficient absorption of NIR light and its conversion into thermal energy. In particular, WO2.72/PU nanocomposites showed strong NIR light absorption of ca. 92%, high photothermal conversion, and better thermal conductivity and absorptivity than other WO3/PU nanocomposites. Furthermore, when the nanocomposite with 7 wt % concentration of WO2.72 nanoparticles was irradiated with infrared light, the temperature of the nanocomposite increased rapidly and stabilized at 120 °C after 5 min. This temperature is 52 °C higher than that achieved by pure PU. These nanocomposites are suitable functional materials for solar collectors, smart coatings, and energy-saving applications.

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Electrodeposition and characterization of nanostructured black nickel selective absorber coatings for solar–thermal energy conversion

Cited by 33 publications

References 42 publications

Decoration of an inorganic layer with nickel (hydr)oxide via green plasma electrolysis

Decoration of an inorganic layer with nickel (hydr)oxide via green plasma electrolysis

Facility for assessing spectral normal emittance of solid materials at high temperature

Highly Efficient Near Infrared Photothermal Conversion Properties of Reduced Tungsten Oxide/Polyurethane Nanocomposites

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