Influence of a metallic nickel interlayer on the performance of solar absorber coatings based on black nickel electrodeposited onto copper

Estrella‐Gutiérrez, M. A.; Lizama-Tzec, F. I.; Arés-Muzio, O.; Oskam, Gerko

doi:10.1016/j.electacta.2016.07.125

Cited by 32 publications

(16 citation statements)

References 46 publications

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“…Galvanic black coatings are used to absorb light in optical devices and collectors, which convert light energy into heat, as well as protective and decorative coatings for various products [1][2][3]. In most cases, black chrome and nickel coatings are used for these purposes [4][5][6][7][8][9][10]. Known disadvantages of chromium plating processes are the difficulty of implementation and high energy intensity, due to the need to heat solutions and losses due to the side reaction of hydrogen evolution.…”

Section: Introductionmentioning

confidence: 99%

Deposition of ultra-black nickel phosphorus coatings

Shcherbina

Abrashov

Grigoryan

et al. 2020

METAL 2020 Conference Proeedings

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Absorbing surfaces of solar receivers are coated with black chrome, which provides the surface of steel or aluminum tubes with good absorption properties. However, the chrome coating does not protect well against corrosion because of its high porosity and high internal stresses, which cause a cracking of coatings. In this paper, we investigated two methods for formation of black coatings on chemically formed Ni-P layers: etching in nitric acid and anodic treatment in a phosphoric acid solution. It was found that in the course of processing the black coatings, their roughness and porosity increase. It was shown that nickel oxides NiO and Ni2O3 and nickel phosphates are presented in the coating composition. It was established that the heat treatment increases the wear resistance and protective ability of black coatings.

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Section: Introductionmentioning

confidence: 99%

Deposition of ultra-black nickel phosphorus coatings

Shcherbina

Abrashov

Grigoryan

et al. 2020

METAL 2020 Conference Proeedings

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“…Therefore, there is an unmet need for low‐cost sprayable processes that can be applied onto large surfaces and complex geometries, which can be performed on‐site and result in highly selective absorbers. There are a number of selective coatings which are fabricated by solution processes, whereas only a few comprise of sprayable methods …”

Section: Introductionmentioning

confidence: 99%

Highly Selective Solar Thermal Sprayable Coating Based on Carbon Nanotubes

et al. 2017

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A key component in solar thermal energy conversion system is the light collector that is coated with an absorbing material. Optimal performance is accomplished by high absorptance and low emittance. The best collectors are fabricated by vacuum deposition processes, which are limited to small size and flat objects. Here, the formation and performance of a new three‐layer solar selective coating, which is formed by a simple wet‐deposition process is reported. The solar absorbing layer is based on carbon nanotubes, which are considered the most absorbing material. This layer is coated by a second layer of ITO, which functions as an IR reflecting layer, followed by an AlOOH anti‐reflective layer. The resulting CNT/ITO/AlOOH coating exhibited the best‐reported spectral selectivity by wet deposition process, with high absorptance of 0.941 ± 0.004 and low emittance of 0.13 ± 0.02 at room temperature. Furthermore, the multilayer sprayable coating is stable at elevated temperature for a prolong time and therefore, shows promise for application in large scale and on‐site solar thermal facilities.

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“…[2][3][4] In addition to high absorption capacity, an important strategy for obtaining dark-coloured materials is to incorporate particles or microstructure arrays, which restrict light in deep pores, such as carbon nanotubes.…”

Section: 3mentioning

confidence: 99%

Section: 3mentioning

confidence: 99%

“…3 Recently, numerous surface treatment technologies have been proposed to prepare coatings with high a s values on metal substrates, including electroplating, blackening treatment, and plasma electrolytic oxidation. [3][4][5] Electroplating and blackening treatments are conventional methods that are commonly used to produce attractive black-coloured coatings. 5 However, the coatings produced by these methods exhibit several drawbacks, such as non-uniform thickness, low adhesion, insufficient mechanical properties, and inferior corrosion resistance, which limit their applications even in mild environments.…”

Section: 3mentioning

confidence: 99%

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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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Influence of a metallic nickel interlayer on the performance of solar absorber coatings based on black nickel electrodeposited onto copper

Cited by 32 publications

References 46 publications

Deposition of ultra-black nickel phosphorus coatings

Deposition of ultra-black nickel phosphorus coatings

Highly Selective Solar Thermal Sprayable Coating Based on Carbon Nanotubes

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

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