Corrosion-Resistant Graphene-Based Magnetic Composite Foams for Efficient Electromagnetic Absorption

Corrosion-Resistant Graphene-Based Magnetic Composite Foams for Efficient Electromagnetic Absorption

ACS Applied Materials & Interfaces

10.1021/acsami.1c23439

http://dx.doi.org/10.1021/acsami.1c23439

Shuangshuang Li, Xinwei Tang, Yawei Zhang, Qianqian Lan, Zhiwei Hu, Le Li, Nan Zhang, Piming Ma, Weifu Dong, Wengweei Tjiu, Zicheng Wang, Tianxi Liu

General Materials Science

08 February 2022

Li, S., Tang, X., Zhang, Y., Lan, Q., Hu, Z., Li, L., Zhang, N., Ma, P., Dong, W., Tjiu, W., Wang, Z., & Liu, T. (2022). Corrosion-Resistant Graphene-Based Magnetic Composite Foams for Efficient Electromagnetic Absorption. ACS Applied Materials & Interfaces, 14(6), 8297–8310. https://doi.org/10.1021/acsami.1c23439

Designing and fabricating high-performance microwave absorption materials with efficient electromagnetic absorption and corrosion resistance becomes a serious and urgent concern. Herein, novel corrosion-resistant graphene-based carboncoated iron (Fe@C) magnetic composite foam is fabricated via self-assembly of iron phthalocyanine/Fe3O4 (FePc hybrid) on the graphene skeletons under solvothermal conditions and then annealing at high temperature. As a result, the rational construction of a hierarchical impedance gradient between graphene skeletons and Fe@C particles can facilitate the optimization in impedance matching and attenuation characteristic of the foam, realizing the efficient dissipation for incident electromagnetic waves. Additionally, the performance of electromagnetic absorption can be controllably regulated by optimizing annealing temperature and/or time. More importantly, the formation of a carbon-coated iron structure substantially improves the corrosion resistance of magnetic particles, endowing the composite foam with excellent stability and durability in microwave absorption performance.

Publisher Copyright

This work is supported by the National Natural Science Foundation of China (52003106 and 21674019), China Postdoctoral Science Foundation (2021M691265), Fundamental Research Funds for the Central Universities (2232019A3-03 and JUSRP12032), Ministry of Education of the People’s Republic of China (6141A0202202), and Shanghai Scientific and Technological Innovation Project (18JC1410600).

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.1c23439

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