Fabrication of flake-like NiCo_(2)O_(4)/reduced graphene oxide/melamine-derived carbon foam as an excellent microwave absorber  

作　　者：Konghu Tian Hang Yang Chao Zhang Ruiwen Shu Qun Shao Xiaowei Liu Kaipeng Gao 

机构地区：[1]The First Affiliated Hospital of Anhui University of Science and Technology(Huainan First People’s Hospital),Huainan 232001,China [2]Analysis and Test Center,Anhui University of Science and Technology,Huainan 232001,China [3]School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China [4]School of Chemical and Blasting Engineering,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期556-565,共10页矿物冶金与材料学报(英文版)

基　　金：support of the Key Science Research Project in Colleges and Universities of Anhui Province,China(No.2022AH050813);the Medical Special Cultivation Project of Anhui University of Science and Technology,China(No.YZ2023H2A002).

摘　　要：Carbon-based foams with a three-dimensional structure can serve as a lightweight template for the rational design and control-lable preparation of metal oxide/carbon-based composite microwave absorption materials.In this study,a flake-like nickel cobaltate/re-duced graphene oxide/melamine-derived carbon foam(FNC/RGO/MDCF)was successfully fabricated through a combination of solvo-thermal treatment and high-temperature pyrolysis.Results indicated that RGO was evenly distributed in the MDCF skeleton,providing ef-fective support for the load growth of FNC on its surface.Sample S3,the FNC/RGO/MDCF composite prepared by solvothermal method for 16 h,exhibited a minimum reflection loss(RL_(min))of-66.44 dB at a thickness of 2.29 mm.When the thickness was reduced to 1.50 mm,the optimal effective absorption bandwidth was 3.84 GHz.Analysis of the absorption mechanism of FNC/RGO/MDCF revealed that its excellent absorption performance was primarily attributed to the combined effects of conduction loss,multiple reflection,scattering,in-terface polarization,and dipole polarization.

关 键 词：carbon foam reduced graphene oxide flake-like nickel cobaltate microwave absorbing materials 

分 类 号：TQ127.11[化学工程—无机化工]