期刊
MOLECULES
卷 24, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/molecules24081623
关键词
photo-thermal conversion; phase change materials; thermochromic compound; temperature control
资金
- National Natural Science Foundation of China [21576039, 21878043, 21536002, 21421005, U1608223]
- Program for Innovative Research Team in University [IRT_13R06]
- Fundamental Research Funds for the Central Universities [DUT18ZD218]
Light-driven phase change materials (PCMs) have received significant attention due to their capacity to convert visible light into thermal energy, storing it as latent heat. However, continuous photo-thermal conversion can cause the PCMs to reach high thermal equilibrium temperatures after phase transition. In our study, a novel light-driven phase change material system with temperature-control properties was constructed using a thermochromic compound. Thermochromic phase change materials (TC-PCMs) were prepared by introducing 2-anilino-6-dibutylamino-3-methylfluoran (ODB-2) and bisphenol A (BPA) into 1-hexadecanol (1-HD) in various proportions. Photo-thermal conversion performance was investigated with solar radiation (low power of 0.09 W/cm(2)) and a xenon lamp (at a high power of 0.14 W/cm(2)). The TC-PCMs showed a low equilibrium temperature due to variations in absorbance. Specifically, the temperature of TC-PCM180 (ODB-2, bisphenol A and 1-HD ratio 1:2:180) could stabilize at 54 degrees C approximately. TC-PCMs exhibited reversibility and repeatability after 20 irradiation and cooling cycles.
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