期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 174, 期 -, 页码 538-544出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2017.09.045
关键词
Light-driven; Composite phase change materials; Thermal conductivity
资金
- National Natural Science Foundation of China [21576039, 21536002, 21421005, 21276042, U1608223]
- Program for Innovative Research Team in University [IRT-13R06]
- Program for New Century Excellent Talents in University [NCET130080]
- Fundamental Research Funds for the Central Universities [DUT13LK35, DUT14YQ209, DUT2013TB07, DUT14QY13]
Light-driven carbon fiber (CF)/polyethylene glycol (PEG)/silica (SiO2) composite phase change materials (PCMs) with high thermal conductivity, and at low cost were successfully prepared through a sol-gel process. Structural and thermal property were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) analysis, X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and differential thermogravimetry (DTG). The CF/PEG/SiO2 composite PCMs showed amazing fusion and crystallization enthalpies of 142.6 and 154.4 J/g at CF content of 3%, and the thermal conductivity coefficient reached 0.45 W/(m.K). The prepared PCMs also showed excellent light-thermal energy conversion capability, and a potential for wide application in improving the utilization efficiency of solar energy.
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