复合数
热能储存
材料科学
储能
接触角
涂层
相变材料
复合材料
潜热
超疏水涂料
热稳定性
热能
水分
相变
表面能
化学工程
工程物理
工程类
功率(物理)
物理
热力学
生态学
生物
量子力学
作者
Haiyue Yang,Siyuan Wang,Xin Wang,Weixiang Chao,Nan Wang,Xiaolun Ding,Feng Liu,Qianqian Yu,Tinghan Yang,Zhaolin Yang,Jian Li,Chengyu Wang,Guoliang Li
出处
期刊:Applied Energy
[Elsevier]
日期:2020-03-01
卷期号:261: 114481-114481
被引量:96
标识
DOI:10.1016/j.apenergy.2019.114481
摘要
Form-stable composite phase change materials, as thermal energy storage technology, show great promise for reducing energy consumption and relieving current energy shortage problems. However, porous supporting materials and most phase change materials are hydrophilic and hygroscopic, which cause crack-formation at the interfaces between supporting materials and phase change materials and decrease in thermal energy storage capacity of composite phase change material in wet or humid environment. There are almost no reports concerning this topic. Herein, form-stable and superhydrophobic composite phase change materials are fabricated by spraying superhydrophobic coating on the surface of composite phase change materials, in which delignified wood acts as a supporting material to protect against liquid leakage of 1-tetradecanol. The superhydrophobic composite phase change materials possess large water contact angle of 155° and superhydrophobic stability at 20–100 °C and pH 3–12, which prevents supporting materials and phase change materials from contacting with moisture in wet environment. In addition, the superhydrophobic composite phase change materials exhibit large latent heat of fusion (125.40 J/g), 29.58 J/g higher than that of composite phase change materials without superhydrophobic coating in wet environment. Moreover, the superhydrophobic composite phase change materials possess excellent thermal reliability and stability, efficient solar-to-thermal energy conversion and self-cleaning property, which are potential in the application of advanced energy-related devices and systems for thermal energy storage in wet or humid environment.
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