Session: 08-01: Micro/Nanoscale Heat Conduction

Paper Number: 132020

132020 - Carbon Nanotubes Meet Phase Change Materials: Experiments and Mechanism 

Abstract: 

With the merits of inherent physicochemical properties of hollow structure, high mechanical strength, thermal stability, ultrahigh light absorption capacity, and ultrahigh thermal conductivity, carbon nanotubes (CNTs) are extensively used to enhance the thermal storage capabilities of solid–liquid phase change materials (PCMs). Interestingly, CNTs can act as thermally conductive additives and supporting skeletons when marring with PCMs. The state-of-the-art reviews on PCMs pay attention to carbon-based porous composite PCMs or nanoparticle dispersed PCMs, CNTs-derived PCMs only share a small part, lacking of a comprehensive review for multifunctional CNTs compounded PCMs. Herein, focusing on the enhancement effects of CNTs on PCMs, we retrospectively describe composite PCMs with a novel category way, by using CNTs as nanoadditives, porous supporters, and secondary network. We emphasize the micro-mechanism of heterogeneous interactions induced by CNTs: crystallization behavior, interfacial thermal resistance, thermal conductivity, phonon transport. Simultaneously, we provide in-depth insight into relationship between micro structural and thermal properties of CNT-derived PCMs. As a result, some different pathways of modern utilization based on the improved PCMs are presented. This work aims to inspire clever use of CNTs into PCMs for targeted applications.

Presenting Author: Daili Feng University Science and Technology Beijing

Presenting Author Biography: Daili Feng is associate professor of University of Science and Technology Beijing. She received the Ph. D in Mechanical Engineering Department from University of Science and Technology Beijing, in 2015. Then, she joined the School of Energy and Environmental Engineering working on many research topics. From 2019 to 2020, she went to the School of Architecture and Environment of the University of Nottingham as a visiting scholar. Now she is interested in heat and mass transfer phenomena at microscale interface, thermophysical properties of energy materials and energy system optimization.

Authors:

Zihao Zhao University Science and Technology Beijing
Daili Feng University Science and Technology Beijing
Xinxin Zhang University Science and Technology Beijing
Yanhui Feng University Science and Technology Beijing