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Electroplated $${\hbox {Co}_{3}}{\hbox {O}_{{4}}}$$ selective coatings for high-temperature solar thermal applications
Bulletin of Materials Science ( IF 1.8 ) Pub Date : 2020-06-23 , DOI: 10.1007/s12034-020-02112-8
R R Udawant , M G Takwale , S V Ghaisas , K C Mohite

This communication presents the optical characterization of $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ films electroplated on Cu- and Ni-coated Cu substrates. $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ films were successfully deposited by using the electrochemical deposition method with cobalt acetate tetrahydrate as a cobalt precursor followed by annealing at $$350^{\circ }\hbox {C}$$. The as-prepared films were characterized using X-ray diffraction, UV–visible spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and stagnation temperature test. The characterization shows the presence of only the cubic spinal $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ phase in all films. The morphological analysis revealed the generation of unique fish-shaped $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ particles with uniform size distribution for the films obtained on the Ni-coated Cu substrate. The Cu substrate with and without nickel plating used for deposition has shown a profound effect on the optical characteristics of films. The solar absorbance as high as 0.96 and thermal emittance as low as 0.02 were obtained for the films deposited on the Ni-coated Cu substrate. The highest value of the figure of merit $$(F_{{1}})$$ of $$\sim $$0.34 and extrapolated stagnation temperature of $$\sim $$362$$^{\circ }\hbox {C}$$ were realized for films having better optical characteristics. The results obtained indicate very good potential of the deposited films for solar thermal applications.

中文翻译:

用于高温太阳能热应用的电镀 $${\hbox {Co}_{3}}{\hbox {O}_{{4}}}$$ 选择性涂层

该通讯展示了电镀在镀铜和镀镍铜基板上的 $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ 薄膜的光学特性。$$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ 薄膜是通过使用电化学沉积方法以四水合乙酸钴作为钴前驱体,然后以 $$350 进行退火而成功沉积的^{\circ }\hbox {C}$$。使用 X 射线衍射、紫外-可见光谱、傅里叶变换红外光谱、扫描电子显微镜和停滞温度测试对制备的薄膜进行表征。表征显示所有电影中仅存在立方脊柱 $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ 相。形态学分析表明,在 Ni- 上获得的薄膜产生了具有均匀尺寸分布的独特鱼形 $$\hbox {Co}_{{3}}\hbox {O}_{{4}}$$ 颗粒。镀铜基板。用于沉积的镀镍和未镀镍的铜基板对薄膜的光学特性产生了深远的影响。沉积在镀镍铜基板上的薄膜的太阳能吸收率高达 0.96,热辐射率低至 0.02。$$\sim $$0.34 的品质因数 $$(F_{{1}})$$ 和外推停滞温度 $$\sim $$$362$$^{\circ }\hbox {C} 的最高值为具有更好光学特性的薄膜实现了$$。获得的结果表明沉积薄膜在太阳能热应用方面具有非常好的潜力。用于沉积的镀镍和未镀镍的铜基板对薄膜的光学特性产生了深远的影响。沉积在镀镍铜基板上的薄膜的太阳能吸收率高达 0.96,热辐射率低至 0.02。$$\sim $$0.34 的品质因数 $$(F_{{1}})$$ 和外推停滞温度 $$\sim $$$362$$^{\circ }\hbox {C} 的最高值为具有更好光学特性的薄膜实现了$$。获得的结果表明沉积薄膜在太阳能热应用方面具有非常好的潜力。用于沉积的镀镍和未镀镍的铜基板对薄膜的光学特性产生了深远的影响。沉积在镀镍铜基板上的薄膜的太阳能吸收率高达 0.96,热辐射率低至 0.02。$$\sim $$0.34 的品质因数 $$(F_{{1}})$$ 和外推停滞温度 $$\sim $$$362$$^{\circ }\hbox {C} 的最高值为具有更好光学特性的薄膜实现了$$。获得的结果表明沉积薄膜在太阳能热应用方面具有非常好的潜力。$$\sim $$0.34 的品质因数 $$(F_{{1}})$$ 和外推停滞温度 $$\sim $$$362$$^{\circ }\hbox {C} 的最高值为具有更好光学特性的薄膜实现了$$。获得的结果表明沉积薄膜在太阳能热应用方面具有非常好的潜力。$$\sim $$0.34 的品质因数 $$(F_{{1}})$$ 和外推停滞温度 $$\sim $$$362$$^{\circ }\hbox {C} 的最高值为具有更好光学特性的薄膜实现了$$。获得的结果表明沉积薄膜在太阳能热应用方面具有非常好的潜力。
更新日期:2020-06-23
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