太阳能选择性吸收涂层PbO2的性能研究

工程热物理学报 , 2011, 32(3): 493-496.

太阳能选择性吸收涂层PbO2的性能研究

杜娟 ^1, , 魏小兰 ^2, , 丁静 ^3, , 杨晓西 ^4, , 杨建平 ^5,

1.华南理工大学教育部传热强化与过程节能重点实验室,广东,广州5106402;中山大学工学院,广东广州510275

2.华南理工大学教育部传热强化与过程节能重点实验室,广东,广州5106402;中山大学工学院,广东广州510275

3.华南理工大学教育部传热强化与过程节能重点实验室,广东,广州5106402;中山大学工学院,广东广州510275

4.华南理工大学教育部传热强化与过程节能重点实验室,广东,广州5106402;中山大学工学院,广东广州510275;东莞理工学院化学与环境工程学院,广东,东莞,523808

5.华南理工大学教育部传热强化与过程节能重点实验室,广东,广州5106402;中山大学工学院,广东广州510275

基金项目: 973项目国家重点基础研究发展计划资助(2010CB227306) 国家自然科学基金重点项目(50930007) 国家自然科学基金重点项目(U1034005) 国家973计划项目(2010CB227103) 国家863探索导向项目(2009AA052417) 广东省重大科技专项(2009A080306001)

关键词：二氧化铅 , 电沉积 , 选择性涂层

Study on the Prepation and Charcterization of PbO2 Solar Selective Absorpting Coating

本文主要研究制备方法对改变二氧化铅(PbO2)纳米涂层的太阳光谱吸收选择性的影响.通过恒电流沉积法制备PbO2纳米涂层,并通过改变制备条件以得出最佳光谱吸收选择性,并对该吸收涂层进行了紫外-可见光谱(Uv-vis),傅里叶红外光谱(FTIR),扫描电子显微镜(SEM),透射电子显微镜(TEM)等对涂层性能和结构进行分析.测试结果显示,在沉积电流在5 mA.cm-2,沉积时间500 s的情况下得到吸收率(α)达到0.9和热发射率(ε)达到0.09的太阳能选择性吸收涂层.涂层的吸收率会随着沉积电流的增加和沉积时间的增加而出现有规律性的变化,是由于电沉积过程中气体的溢出对涂层表面形貌产生了影响,从而导致涂层的光谱性能产生差异.

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