Ultrathin,flexible,and high-strength Ni/Cu/metallic glass/Cu/Ni composite with alternate magneto-electric structures for electromagnetic shielding

Zenan Ma ¹Jiawei Li ²Jijun Zhang ³Aina He ²Yaqiang Dong ²Guoguo Tan ²Mingqiang Ning ²Qikui Man ²Xincai Liu⁴

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作者信息

1. Faculty of Materials Science and Chemical Engineering,Ningbo University,Ningbo,315211,China;CAS Key Laboratory of Magnetic Materials and Devices,and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo,315201,China
2. CAS Key Laboratory of Magnetic Materials and Devices,and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo,315201,China
3. Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu,610054,China
4. Faculty of Materials Science and Chemical Engineering,Ningbo University,Ningbo,315211,China
折叠

Abstract

Electromagnetic interference (EMI) shielding materials with ultrathin,flexible,superior mechanical and thermal management properties are highly desirable for smart and wearable electronics.Here,ultrathin and flexible Ni/Cu/metallic glass/Cu/Ni (Ni/Cu/MG) multilayer composite with alternate magnetic and electrical structures was designed via facial electroless plating of Cu and Ni on an Fe-based metallic glass.The resultant 0.02 mm-thick Ni/Cu/MG composite displays a superior EMI shielding effectiveness (EMISE)of 35 dB and a great EMISE/t of 1750 dB/mm,which is greater than those of composites with monotonous multilayer or homogeneous structures.The improved EMI SE originates from the massive ohmic losses,the enhanced internal reflection/absorption,and the abundant interfacial polarization loss.Particularly,Ni/Cu/MG exhibits a high tensile strength of up to 1.2 GPa and outstanding mechanical stability,enabling the EMI SE remains unchanged after 10,000 times of bending.Moreover,Ni/Cu/MG has excellent Joule heating characteristics and thermal stability,which is very suitable for heating components of wearable hyperthermia devices.

Key words

Electromagnetic shielding/Thermal management/Mechanical properties/Fe-based metallic glasses/Alternate magnetic and electrical structures

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基金项目

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量54

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