Ultrafast battery heat dissipation enabled by highly ordered and interconnected hexagonal boron nitride thermal conductive composites

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Zhuoya Wang Kaihang Zhang Bing Zhang Zheming Tong Shulan Mao Hao Bai Yingying Lu
Abstract	Heat dissipation involved safety issues are crucial for industrial applications of the high-energy density battery and fast charging technology. While traditional air or liquid cooling methods suffering from space limitation and possible leakage of electricity during charge process, emerging phase change materials as solid cooling media are of growing interest. Among them, paraffin wax (PW) with large latent heat capacity and low cost is desirable for heat dissipation and thermal management which mainly hindered by their relatively low thermal conductivity and susceptibility to leakage. Here, highly ordered and interconnected hexagonal boron nitride (h-BN) networks were established via ice template method and introduced into PW to enhance the thermal conductivity. The composite with 20 wt% loading amount of h-BN can guarantee a highly ordered network and exhibited high thermal conductivity (1.86 W m−1 K−1) which was 4 times larger compared with that of random dispersed h-BN involved PW and nearly 8 times larger compared with that of bare PW. The optimal thermal conductive composites demonstrated ultrafast heat dissipation as well as leakage resistance for lithium-ion batteries (LIBs), heat generated by LIBs can be effectively transferred under the working state and the surface temperature kept 6.9 °C lower at most under 2–5 °C continuous charge-discharge process compared with that of bare one which illustrated great potential for industrial thermal management.
Related Links	http://www.sciencedirect.com/science/article/pii/S2468025722000346
DOI	10.1016/j.gee.2022.02.007
Journal	Green Energy & Environment
Issue Number	6
Volume Number	7
e-ISSN	24680257
Language	English
Publisher	KeAi Communications Co., Ltd.
Publisher Date	2022-01-01
Publisher Place	China
Access Restriction	Open
Subject Keyword	Renewable Energy Sources Ecology Hexagonal Boron Nitride Paraffin Wax Lithium-ion Batteries Thermal Conductive Network Battery Heat Dissipation Renewable energy sources
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment