Engineering and Technology

A popcorn-inspired strategy for compounding graphene@NiFe₂O₄ flexible films for strong electromagnetic interference shielding and absorption

M. Liu, Z. Wang, et al.

Discover how the innovative 'popcorn-making-mimic' strategy deployed by researchers Mingjie Liu, Zhiyuan Wang, Zhaoqiang Song, Fangcheng Wang, Guangyao Zhao, Haojie Zhu, Zhuofei Jia, Zhenbin Guo, Feiyu Kang, and Cheng Yang leads to the creation of a groundbreaking graphene@NiFe₂O₄ composite film. This remarkable approach enhances electrical conductivity, magnetization, and provides exceptional EMI shielding effectiveness, setting a new standard for advanced composite materials.

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Abstract

Compounding functional nanoparticles with highly conductive and porous carbon scaffolds is crucial for various functional devices. This paper introduces a "popcorn-making-mimic" strategy using a laser-assisted method to create a graphene@NiFe₂O₄ composite film. This approach prevents structural disintegration and mass loss during laser treatment, resulting in a highly integrated composite with superior electrical conductivity and high saturated magnetization. The resulting film demonstrates exceptional EMI shielding effectiveness (up to 20906 dB cm²/g), high absorption rate (75%), flexibility, and reliability. This method offers a new paradigm for fabricating advanced composite materials.

Publisher

Nature Communications

Published On

Jun 28, 2024

Authors

Mingjie Liu, Zhiyuan Wang, Zhaoqiang Song, Fangcheng Wang, Guangyao Zhao, Haojie Zhu, Zhuofei Jia, Zhenbin Guo, Feiyu Kang, Cheng Yang

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