纳微快报(英文)2021,Vol.13Issue(11):308-321,14.
Spider Web-Inspired Graphene Skeleton-Based High Thermal Conductivity Phase Change Nanocomposites for Battery Thermal Management
Spider Web?Inspired Graphene Skeleton?Based High Thermal Conductivity Phase Change Nanocomposites for Battery Thermal Management
摘要
Abstract
Phase change materials (PCMs) can be used for efficient thermal energy harvesting, which has great potential for cost-effective thermal management and energy storage. However, the low intrinsic ther?mal conductivity of polymeric PCMs is a bottleneck for fast and efficient heat harvesting. Simultaneously, it is also a challenge to achieve a high thermal conductivity for phase change nanocomposites at low filler load?ing. Although constructing a three-dimensional (3D) thermally conductive network within PCMs can address these problems, the anisotropy of the 3D framework usually leads to poor thermal conductivity in the direc?tion perpendicular to the alignment of fillers. Inspired by the interlaced structure of spider webs in nature, this study reports a new strategy for fabricating highly thermally conductive phase change composites (sw-GS/PW) with a 3D spider web (sw)-like structured graphene skeleton (GS)by hydrothermal reaction, radial freeze-casting and vacuum impregnation in paraffin wax (PW). The results show that the sw-GS hardly affected the phase transformation behavior of PW at low loading. Especially, sw-GS/PW exhibits both high cross-plane and in-plane thermal conductivity enhancements of ~ 1260% and ~ 840%, respectively, at an ultra-low filler loading of 2.25 vol.%. The thermal infrared results also demonstrate that sw-GS/PW possessed promising applications in battery thermal management.关键词
Thermal conductivity/Radial freeze-casting/Phase change materials/3D graphene aerogel/Thermal managementKey words
Thermal conductivity/Radial freeze-casting/Phase change materials/3D graphene aerogel/Thermal management引用本文复制引用
Ying Lin,Qi Kang,Han Wei,Hua Bao,Pingkai Jiang,Yiu-Wing Mai,Xingyi Huang..Spider Web-Inspired Graphene Skeleton-Based High Thermal Conductivity Phase Change Nanocomposites for Battery Thermal Management[J].纳微快报(英文),2021,13(11):308-321,14.基金项目
This work was supported by the National Natural Science Foundation of China(Numbers:U19A20105,51877132). (Numbers:U19A20105,51877132)