Liquid metal compartmented by polyphenol-mediated nanointerfaces enables high-performance thermal management on electronic devices

查看全文 作　　者：Chaojun [1]Zhang;Yang [1]Tang;Tianyu [2]Guo;Yizhou [2]Sang;Ding [3]Li;Xiaoling [1,4]Wang;Orlando [2]J.Rojas;Junling [1,2,4,5]Guo 机构地区：[1]BMI Center for Biomass Materials and Nanointerfaces,College of Biomass Science and Engineering,Sichuan University,Chengdu,Sichuan,the People's Republic of China;[2]Bioproducts Institute,Departments of Chemical and Biological Engineering,The University of British Columbia,Vancouver,British Columbia,Canada;[3]Institute of Development Studies,Southwestern University of Finance and Economics,Chengdu,Sichuan,the People's Republic of China;[4]National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu,Sichuan,the People's Republic of China;[5]State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu,Sichuan,the People's Republic of China 出　　处：《InfoMat》索引2024年第6卷第1期,共13页 基　　金：National Talents Program;National Natural Science Foundation of China,Grant/Award Numbers:22108181,22178233;Talents Program of Sichuan Province;Double First-Class University Plan of Sichuan University;State Key Laboratory of Polymer Materials Engineering,Grant/Award Number:sklpme 2020-03-01;Sichuan Science and Technology Program,Grant/Award Number:2022YFN0070;The Sichuan Province Postdoctoral Special Funding。 摘　　要：The exponentially increasing heat generation in electronic devices,induced by high power density and miniaturization,has become a dominant issue that affects carbon footprint,cost,performance,reliability,and lifespan.Liquid metals(LMs)with high thermal conductivity are promising candidates for effective thermal management yet are facing pump-out and surface-spreading issues.Confinement in the form of metallic particles can address these problems,but apparent alloying processes elevate the LM melting point,leading to severely deteriorated stability.Here,we propose a facile and sustainable approach to address these challenges by using a biogenic supramolecular network as an effective diffusion barrier at copper particle-LM(EGaIn/Cu@TA)interfaces to achieve superior thermal conduction.The supramolecular network promotes LM stability by reducing unfavorable alloying and fluidity transition.The EGaIn/Cu@TA exhibits a record-high metallic-mediated thermal conductivity(66.1 W m^(-1) K^(-1))and fluidic stability.Moreover,mechanistic studies suggest the enhanced heat flow path after the incorporation of copper particles,generating heat dissipation suitable for computer central processing units,exceeding that of commercial silicone.Our results highlight the prospects of renewable macromolecules isolated from biomass for the rational design of nanointerfaces based on metallic particles and LM,paving a new and sustainable avenue for high-performance thermal management. 关 键 词：Electronic devices High thermal conductivity Liquid metals Natural polyphenols Thermal management