Preparation and characterization of GO/PEG photo-thermal conversion form-stable composite phase change materials

被引：146
作者：
Li, Min [1 ]
Wang, Chengcheng [1 ]
机构：
[1] Southeast Univ, Jiangsu Key Lab Construct Mat, Nanjing 211189, Jiangsu, Peoples R China
来源：
RENEWABLE ENERGY | 2019年 / 141卷
基金：
中国国家自然科学基金;
关键词：
Graphene oxide; Photo-thermal conversion; Phase change material; THERMAL-ENERGY STORAGE; DRIVEN; LIGHT;
D O I：
10.1016/j.renene.2019.03.141
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this paper, graphene oxide (GO) with full band light absorption and photo-thermal conversion property was selected as the photo-thermal conversion material. The GO/PEG composite phase change material (PCM) was prepared by ultrasound-assisted physical blending. The micro-structure, crystallinity and chemical composition of the composite PCM5 were characterized by XRD, SEM, and FT-IR analysis techniques, respectively. The thermal storage properties and photo-thermal conversion performance of GO/PEG composite PCM5 were tested by DSC and self-assembled photo-thermal conversion test system. The results showed that the inter-layer spacing of GO was enlarged. PEG was distributed between the layers and surfaces of GO through the capillary force of GO and inter-molecular hydrogen bonding. The latent heat of the GO/PEG composite PCM5 were more than 80 J/g and the phase transition temperature was 50.5 degrees C. The composite PCM could absorb visible light (300-800 nm) and store energy through light drive. Photo-thermal conversion efficiency of the GO/PEG reached 0.75, which indicated that the prepared GO/PEG composite PCMs had great application prospect in the field of photo-thermal conversion. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1005 / 1012
页数：8
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