材料科学
热导率
石墨烯
热能储存
相变材料
复合数
复合材料
气凝胶
热的
化学工程
纳米技术
生态学
生物
物理
工程类
气象学
作者
Yu Shang,Dong Zhang,M.R. An,Li Zhao
出处
期刊:Materials
[MDPI AG]
日期:2022-08-04
卷期号:15 (15): 5380-5380
被引量:3
摘要
Thermal conductivity and latent heat are crucial performance parameters for phase change materials (PCMs) in thermal energy storage. To enhance the thermal performance of PCMs, with the help of graphene oxide (GO) acting as a dispersing agent, well-defined hybrid graphene aerogels (HGAs) with a three-dimensional (3D) porous structure were successfully synthesized by hydrothermal reaction of GO and graphene nanoplatelets (GNPs). GNPs, dispersing uniformly along the interconnecting graphene network, acted as thermal conductive fillers and supporting materials. Palmitic acid (PA) was impregnated into the HGA by vacuum forces. It was found that the thermal conductivity of the PA/HGA was enhanced without compromising heat storage capacity. Compared with PA, the PA/HGA with 4.2 wt% GNPs exhibited enhanced thermal conductivity of 2.1 W/mK and high latent heat of 206.2 J/g simultaneously. The PA/HGA with good thermal performance has potential applications in thermal energy storage.
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