Light-heat conversion and thermal conductivity enhancement of PEG/SiO2 composite PCM by in situ Ti4O7 doping

被引：114
作者：
Tang, Bingtao [1 ]
Wei, Huipeng [1 ]
Zhao, Defeng [1 ]
Zhang, Shufen [1 ]
机构：
[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2017年 / 161卷
关键词：
Light-heat conversion; Thermal conductivity; Phase change materials; PHASE-CHANGE MATERIALS; SOLAR-ENERGY STORAGE; PERFORMANCE;
D O I：
10.1016/j.solmat.2016.12.003
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
To improve the energy utilization efficiency of solar energy, Ti4O7/PEG/SiO2 form-stable phase change material (PCM) with characters of light-heat conversion and thermal conductivity enhancement was developed by in-situ doping titanium black (Ti4O7) through acid and alkali catalytic sol-gel method. The structure and properties of PCM were investigated by SEM, FT-IR, XRD, DSC, TG, coefficient of thermal conductivity and thermal conversion testing, etc. The results showed that the Ti4O7/PEG/SiO2 could effectively absorb UV visible light of solar radiation, simultaneously, the light energy was translated into thermal energy which was storied by PCM. Furthermore, the composite PCM exhibited good thermal stability below 360 degrees C, excellent shape-stabilized effect and high thermal conductivity. The Ti4O7/PEG/SiO2 as novel thermal storage material can usefully enhance the utilization efficiency of solar energy.
引用
收藏
页码：183 / 189
页数：7
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