A Through-Thickness Arrayed Carbon Fibers Elastomer with Horizontal Segregated Magnetic Network for Highly Efficient Thermal Management and Electromagnetic Wave Absorption

Zhang，Zhen1,2; Wang，Jianda1,3; Shang，Jian4; Xu，Yadong1; Wan，Yan Jun1; Lin，Zhiqiang1; Sun，Rong1; Hu，Yougen1

2022

10.1002/smll.202205716

Small   影响因子和分区

1613-6810

1613-6829

Multifunctional thermal management materials with highly efficient electromagnetic wave (EMW) absorption performance are urgently required to tackle the heat dissipation and electromagnetic interference issues of high integrated electronics. However, the high thermal conductivity (λ) and outstanding EMW absorption performance are often incompatible with each other in a single material. Herein, a through-thickness arrayed NiCoO/graphene oxide/carbon fibers (NiCO@CFs) elastomer with integrated functionalities of high thermal conductivity, highly efficient EMW absorption, and excellent compressibility is reported. The NiCO@CFs elastomer realizes a high out-of-plane thermal conductivity of 15.55 W m K, due to the through-thickness vertically aligned CFs framework. Moreover, the unique horizontal segregated magnetic network effectively reduces the electrical contact between the CFs, which significantly enhances impedance matching of NiCO@CFs elastomer. As a result, the vertically arrayed NiCO@CFs elastomer synchronously exhibits ultrabroad effective absorption bandwidth of 8.25 GHz (9.75–18 GHz) at a thickness of 2.4 mm, good impedance matching, and a minimum reflection loss (RL) of −55.15 dB. Given these outstanding findings, the multifunctional arrayed NiCO@CFs elastomer opens an avenue for applications in EMW absorption and thermal management. This strategy of constructing thermal/electrical/mechanical pathways provides a promising way for the high-performance multifunctional materials in electronic devices.

aligned carbon fiber arrays density functional calculation electromagnetic wave absorption finite element analysis thermal interface materials thermal management

SCI ; EI

英语

其他

[62074154] ; [62101352] ; [2020A1515110962] ; [2020A1515110154] ; [RCBS20210706092343016] ; [JCYJ20210324102208023] ; [JSGG20210802153000002]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000890351300001

WILEY-V C H VERLAG GMBH

20224813195349

Circular waveguides ; Elastomers ; Electromagnetic pulse ; Electromagnetic wave absorption ; Finite element method ; Impedance matching (electric) ; Plastics ; Temperature control ; Thermal conductivity

Thermodynamics:641.1 ; Electricity and Magnetism:701 ; Electromagnetic Waves:711 ; Waveguides:714.3 ; Specific Variables Control:731.3 ; Chemical Products Generally:804 ; Polymer Products:817.1 ; Elastomers:818.2 ; Numerical Methods:921.6

2-s2.0-85142839574

Scopus

1.Shenzhen Institute of Advanced Electronic Materials,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China
2.College of Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Nano Science and Technology Institute,University of Science and Technology of China,Suzhou,215123,China
4.Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China

Zhang，Zhen,Wang，Jianda,Shang，Jian,et al. A Through-Thickness Arrayed Carbon Fibers Elastomer with Horizontal Segregated Magnetic Network for Highly Efficient Thermal Management and Electromagnetic Wave Absorption[J]. Small,2022,19(4).

Zhang，Zhen.,Wang，Jianda.,Shang，Jian.,Xu，Yadong.,Wan，Yan Jun.,...&Hu，Yougen.(2022).A Through-Thickness Arrayed Carbon Fibers Elastomer with Horizontal Segregated Magnetic Network for Highly Efficient Thermal Management and Electromagnetic Wave Absorption.Small,19(4).

Zhang，Zhen,et al."A Through-Thickness Arrayed Carbon Fibers Elastomer with Horizontal Segregated Magnetic Network for Highly Efficient Thermal Management and Electromagnetic Wave Absorption".Small 19.4(2022).