Microstructure and thermal stability of Cu/Zr0.3Al0.7N/Zr0.2Al0.8N/Al34O60N6 cermet-based solar selective absorbing coatings

Meng, Jian; Guo, Ruirui; Hu, Li; Zhao, Luming; Liu, Xiaopeng; Zhou, Li

doi:10.1016/j.apsusc.2018.01.268

Cited by 42 publications

(11 citation statements)

References 43 publications

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“…In addition, the adhesion of solar absorbers is very important for flexible solar absorber applications. A solar absorber is usually used in complex and harsh environments, accompanied by delamination and stripping of coatings, and these problems are more severe for thick multilayered coatings . Therefore, overcoming the challenge of designing ultrathin SSACs by a simple method with excellent solar absorptivity and robust stability is of great importance for the practical application of flexible and wearable energy‐related devices.…”

Section: Introductionmentioning

confidence: 99%

An Ultrathin, Nanogradient, and Substrate‐Independent WO_x‐Based Film as a High Performance Flexible Solar Absorber

et al. 2019

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Advances in flexible and wearable energy-related devices increase the need for highly efficient, low-cost, ultrathin solar selective absorber coatings (SSACs). Herein, the fabrication of nanogradient WO x -based SSACs with excellent properties, including a superior solar absorptance of 0.93, an outstanding thermal robustness of up to 300 C, and substrate independence, is reported. More importantly, the thickness of WO x -based SSACs is only approximately 100 nm, which is substantially thinner than all other reported SSACs. These features arise from the two intrinsically absorptive WO x layers on a thin nanoplasmonic W layer. The deposition process is based on self-doped reactive sputtering via limited tungsten oxidation due to a small amount of oxygen. The WO x -based SSACs on a flexible polyimide sheet demonstrate stable performance, strong adhesion, and bendable nature. The proposed self-doped fabrication process provides a new way to design cost-effective ultrathin SSACs to meet the demand for large-scale flexible energy harvesting and supply applications.

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Section: Introductionmentioning

confidence: 99%

An Ultrathin, Nanogradient, and Substrate‐Independent WO_x‐Based Film as a High Performance Flexible Solar Absorber

et al. 2019

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“…In a previous study, Gong et al showed that AlCrN/AlCrNO/AlCrO-based thin film exhibited an absorptance and emittance of 0.93 and 0.20, respectively, with thermal stability up to 500 °C . Meng et al deposited Zr 0.3 Al 0.7 N/Zr 0.2 Al 0.8 N/Al 34 O 60 N 6 film on Cu substrate which achieved a good selectivity with an absorptance of 0.953 and thermal emittance of 0.079 with thermal stability up to 400 °C in vacuum . Heras et al obtained appreciable selectivity depositing AlTiO/AlTiON (20 at.…”

Section: Introductionmentioning

confidence: 99%

Temperature- and Angle-Dependent Emissivity and Thermal Shock Resistance of the W/WAlN/WAlON/Al₂O₃-Based Spectrally Selective Absorber

Dan¹,

Soum‐Glaude

Carling-Plaza

et al. 2019

ACS Appl. Energy Mater.

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Spectral emissivity is considered as one of the most critical thermophysical properties influencing photothermal conversion efficiency of solar selective absorbers. In addition, long-term stability at high temperature and thermal shock resistance are the performance-limiting properties of spectrally selective absorbers. In this context, this study reports the variation of emissivity with a change in emergence angles and operational temperatures for the newly developed W/WAlN/WAlON/ Al 2 O 3 absorber. An analysis of the experimental results demonstrates that hemispherical emissivity values at elevated temperature are comparable while calculated using both room temperature and high temperature reflectance data. Hence, the applicability of the room temperature measurement method is validated to evaluate high temperature emissivity. The analysis of angular measurements indicates an insignificant difference between hemispherical and near-normal emissivity values for W/WAlN/WAlON/Al 2 O 3 . The study suggests that hemispherical emissivity can be well approximated from near-normal emissivity values by avoiding complex angular measurement procedure. Importantly, one can achieve a combination of high solar absorptance (α = 0.90), low thermal emittance (ε = 0.15), and appreciable heliothermal efficiency (η = 87% at a concentration factor of 100) at 500 °C for the W/WAlN/WAlON/Al 2 O 3 absorber. Thermal stability of this absorber was established by observing an insignificant change in the reflectance spectra while annealed at 80, 200, 300, and 400 °C. In addition, thermal cycling test for 30 times between room temperature and 450 °C in a high flux (40−60 kW/m 2 ) solar simulator confirmed the efficacy of W/WAlN/WAlON/Al 2 O 3 as a promising multilayer solar absorber for high temperature applications.

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“…[ 10,11 ] Meng et al, developed a Cu/Zr 0.3 Al 0.7 N/Zr 0.2 Al 0.8 N/Al 34 O 60 N 6 solar absorber with a superb spectral selectivity of 95.3%/7.9%, which is thermally stable at 400 °C for 192 h in vacuum. [ 12 ] Wu et al, prepared a novel Al/NbMoN/NbMoON/SiO 2 solar absorber with the help of SCOUT software, obtaining a good absorptance ( α = 94.8%), a suppressed emittance ( ε = 5.0%), and exceptional thermal robustness at 400 °C for 500 h. Although superior optical performance and thermal stability have been achieved in the previous works, the deposition process, structure design, spectral selectivity, and thermal tolerance in solar absorbers still have considerable upgrade space.…”

Section: Introductionmentioning

confidence: 99%

Engineering a Versatile Spectrally Selective Absorber for Moderate‐ and Low‐Temperature Application with Gradient High‐Entropy Nitride Nanofilms

Zhao

Qiu

et al. 2021

Solar RRL

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Spectrally selective absorber with superior thermal stability and optical properties is crucial for photothermal conversion applications, including evaporation, anti‐icing, medical sterilization, photothermal catalysis, and solar‐thermal power. Efforts are being made to develop entropy‐stabilized high‐entropy ceramics as high‐performance functional materials, which promise a wide range of potential applications in the fields of energy storage and conversion owing to their diverse compositions and outstanding physical and chemical properties. Herein, an entropy‐stabilized strategy is used to boost the performance of spectrally selective absorbers by carefully choosing a high‐entropy alloy (TiVCrAlZr) target with a reasonable element design, which exhibits a good solar absorptance (α = 96.1%) and low thermal emittance (ϵ = 7.8%). Long‐term thermal stability investigation demonstrates that the entropy‐stabilized absorber could endure at 400 °C for 168 h. Under the irradiation of simulated sunlight, the surface temperature of the absorber can reach up to 105 °C, which is essential for middle‐ and low‐temperature applications. Overall, this work provides significant insights into the spectral selectivity of high‐entropy alloy nitrides and offers a new strategy for designing and developing moderate and low solar selective absorbing coatings via a high‐entropy strategy.

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Microstructure and thermal stability of Cu/Zr0.3Al0.7N/Zr0.2Al0.8N/Al34O60N6 cermet-based solar selective absorbing coatings

Cited by 42 publications

References 43 publications

An Ultrathin, Nanogradient, and Substrate‐Independent WO_x‐Based Film as a High Performance Flexible Solar Absorber

An Ultrathin, Nanogradient, and Substrate‐Independent WO_x‐Based Film as a High Performance Flexible Solar Absorber

Temperature- and Angle-Dependent Emissivity and Thermal Shock Resistance of the W/WAlN/WAlON/Al₂O₃-Based Spectrally Selective Absorber

Engineering a Versatile Spectrally Selective Absorber for Moderate‐ and Low‐Temperature Application with Gradient High‐Entropy Nitride Nanofilms

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Microstructure and thermal stability of Cu/Zr0.3Al0.7N/Zr0.2Al0.8N/Al34O60N6 cermet-based solar selective absorbing coatings

Cited by 42 publications

References 43 publications

An Ultrathin, Nanogradient, and Substrate‐Independent WOx‐Based Film as a High Performance Flexible Solar Absorber

An Ultrathin, Nanogradient, and Substrate‐Independent WOx‐Based Film as a High Performance Flexible Solar Absorber

Temperature- and Angle-Dependent Emissivity and Thermal Shock Resistance of the W/WAlN/WAlON/Al2O3-Based Spectrally Selective Absorber

Engineering a Versatile Spectrally Selective Absorber for Moderate‐ and Low‐Temperature Application with Gradient High‐Entropy Nitride Nanofilms

Contact Info

Product

Resources

About

An Ultrathin, Nanogradient, and Substrate‐Independent WO_x‐Based Film as a High Performance Flexible Solar Absorber

An Ultrathin, Nanogradient, and Substrate‐Independent WO_x‐Based Film as a High Performance Flexible Solar Absorber

Temperature- and Angle-Dependent Emissivity and Thermal Shock Resistance of the W/WAlN/WAlON/Al₂O₃-Based Spectrally Selective Absorber