Liquid metal compartmented by polyphenol‐mediated nanointerfaces enables high‐performance thermal management on electronic devices
Chaojun Zhang,
Yang Tang,
Tianyu Guo,
Yizhou Sang,
Ding Li,
Xiaoling Wang,
Orlando J. Rojas,
Junling Guo
Affiliations
Chaojun Zhang
BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering Sichuan University Chengdu Sichuan the People's Republic of China
Yang Tang
BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering Sichuan University Chengdu Sichuan the People's Republic of China
Tianyu Guo
Bioproducts Institute, Departments of Chemical and Biological Engineering The University of British Columbia Vancouver British Columbia Canada
Yizhou Sang
Bioproducts Institute, Departments of Chemical and Biological Engineering The University of British Columbia Vancouver British Columbia Canada
Ding Li
Institute of Development Studies Southwestern University of Finance and Economics Chengdu Sichuan the People's Republic of China
Xiaoling Wang
BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering Sichuan University Chengdu Sichuan the People's Republic of China
Orlando J. Rojas
Bioproducts Institute, Departments of Chemical and Biological Engineering The University of British Columbia Vancouver British Columbia Canada
Junling Guo
BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering Sichuan University Chengdu Sichuan the People's Republic of China
Abstract 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.
