首页|Bifunctional Liquid Metals Allow Electrical Insulating Phase Change Materials to Dual-Mode Thermal Manage the Li-Ion Batteries

Bifunctional Liquid Metals Allow Electrical Insulating Phase Change Materials to Dual-Mode Thermal Manage the Li-Ion Batteries

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
Phase change materials(PCMs)are expected to achieve dual-mode thermal management for heating and cooling Li-ion batteries(LIBs)according to real-time thermal condi-tions,guaranteeing the reliable operation of LIBs in both cold and hot environments.Herein,we report a liquid metal(LM)modified polyethylene glycol/LM/boron nitride PCM,capable of dual-mode thermal managing the LIBs through photothermal effect and passive thermal conduction.Its geometrical conforma-tion and thermal pathways fabricated through ice-template strat-egy are conformable to the LIB's structure and heat-conduction characteristic.Typically,soft and deformable LMs are modified on the boron nitride surface,serving as thermal bridges to reduce the contact thermal resistance among adjacent fillers to real-ize high thermal conductivity of 8.8 and 7.6 W m-1 K-1 in the vertical and in-plane directions,respectively.In addition,LM with excellent photothermal performance provides the PCM with efficient battery heating capability if employing a controllable lighting system.As a proof-of-concept,this PCM is manifested to heat battery to an appropriate temperature range in a cold environment and lower the working temperature of the LIBs by more than 10℃at high charging/discharging rate,opening opportunities for LIBs with durable working performance and evitable risk of thermal runaway.

Phase change materialsLiquid metalThermal conductivityPhotothermal conversionBattery thermal management

Cong Guo、Lu He、Yihang Yao、Weizhi Lin、Yongzheng Zhang、Qin Zhang、Kai Wu、Qiang Fu

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College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,People's Republic of China

Department of Polymer Science and Engineering,School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,People's Republic of China

国家自然科学基金江苏省自然科学基金State Key Laboratory of Polymer Materi-als EngineeringOpen access funding provided by Shanghai Jiao Tong University

52103091BK20200501sklpme2022-3-15

2022

纳微快报(英文)
上海交通大学

纳微快报(英文)

CSTPCDCSCDSCIEI
ISSN：2311-6706
年,卷(期)：2022.14(12)
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