Three-Dimensional Macroporous rGO-Aerogel-Based Composite Phase-Change Materials with High Thermal Storage Capacity and Enhanced Thermal Conductivity
Zhang Tao,
Wei He,
Xiaoliang Xu,
Jianzhong Fan,
Zhifeng Zhang,
Ziyue Yang,
Yanqiang Liu,
Heng Ma,
Miao Qian,
Mu Yang
Affiliations
Zhang Tao
GRINM Metal Composites Technology Co., Ltd., Beijing 101407, China
Wei He
Wuhan NARI Limited Liability Company, State Grid Electric Power Research Institute, Wuhan 430074, China
Xiaoliang Xu
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Jianzhong Fan
GRINM Metal Composites Technology Co., Ltd., Beijing 101407, China
Zhifeng Zhang
GRINM Metal Composites Technology Co., Ltd., Beijing 101407, China
Ziyue Yang
GRINM Metal Composites Technology Co., Ltd., Beijing 101407, China
Yanqiang Liu
GRINM Metal Composites Technology Co., Ltd., Beijing 101407, China
Heng Ma
Zhejiang Huadian Equipment Testing Institute Co., Ltd., Hangzhou 310015, China
Miao Qian
Zhejiang Huadian Equipment Testing Institute Co., Ltd., Hangzhou 310015, China
Mu Yang
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Three-dimensional porous network encapsulation strategy is an effective means to obtain composite phase-change materials (PCMs) with high heat storage capacity and enhanced thermal conductivity. Herein, macroporous reduced graphene oxide (rGO) aerogels with adjustable pore size are prepared by the emulsion template method and hydrothermal reduction process. Further, the shape-stabilized rGO-aerogel-based composite PCMs are constructed after the combination of 3D porous rGO supports and paraffin wax (PW) through vacuum melting infiltration. By regulating the pore structure of the rGO aerogel network, the rGO-based composite PCMs achieve excellent energy storage properties with a phase-change enthalpy of 179.94 J/g for the loading amount of 95.61 wt% and an obvious enhancement in thermal conductivity of 0.412 W/m−1·K−1, which is 54.89% higher than pristine PW and enduring thermal cycling stability. The obtained macroporous rGO-aerogel-based composite PCMs with high thermal storage and heat transfer performance effectively broaden the application of PCMs in the field of thermal energy storage.