Enhanced thermal conductivity of copper-doped polyethylene glycol/urchin-like porous titanium dioxide phase change materials for thermal energy storage

被引：25

作者：

Hou, Junying ^{[1
]}

Wang, Yaya ^{[1
]}

Liu, Jingchun ^{[1
]}

Zhao, Jianguo ^{[1
]}

Long, Sifang ^{[1
]}

Hao, Jianjun ^{[1
]}

机构：

[1] Agr Univ Hebei, Coll Mech & Elect Engn, Baoding 071001, Hebei, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 2020年 / 44卷 / 03期

关键词：

phase change material; thermal conductivity; thermal energy storage; urchin-like porous TiO2; GRAPHITE COMPOSITE; MESOPOROUS SILICA; PEG; LATENT; NANOPARTICLES; NANOMATERIALS; PERFORMANCE; FABRICATION; PARAFFIN; DELIVERY;

D O I：

10.1002/er.5045

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：

A composite phase change material (PCM) of copper-doped polyethylene glycol (PEG) 2000 impregnated urchin-like porous titanium dioxide (TiO2) microspheres (PEG/TiO2) was successfully synthesised. The urchin-like porous TiO2 structures contain hollow cavities that can provide a high PEG loading capacity of up to 80 wt%. Copper nanoparticles were uniformly dispersed on the outer and inner surfaces of the 0.8PEG/TiO2 as additives to enhance the thermal conductivity of the composite PCM. The latent heat of the Cu/PEG/TiO2 porous composite PCM reached 133.8 J/g, and the thermal conductivity was 0.58 W/(mK), which was 152.2% higher than that of TiO2 and 38.1% higher than 0.8PEG/TiO2. Moreover, the Cu/PEG/TiO2 porous composite PCM has excellent thermal stability and reliability.

引用

页码：1909 / 1919

页数：11

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