Coral-like Polypyrrole/LiFe5O8/MoS2 Nanocomposites for High-Efficiency Microwave Absorbers
Source abstract
Abstract
Herein, based on the good electrical properties of polypyrrole (PPy), it is compounded with raspberry-like LiFe5O8 via in situ polymerization and then compounded with molybdenum disulfide via a hydrothermal reaction to obtain the self-assembled coral-like PPy/LiFe5O8/MoS2 nanocomposites. The hierarchical microstructure greatly improves the electromagnetic wave absorption property of the nanocomposites. The nanosheets’ microstructure of molybdenum disulfide enhances the interface polarization and causes multiple relaxation processes of the nanocomposites, thereby improving the electromagnetic wave absorption performance of the composite material. The minimum reflection loss of the samples with a mass ratio of 6:1 between MoS2 and PPy/LiFe5O8 nanocomposites achieved −73.25 dB at 3.07 mm and then an effective absorption bandwidth of 7.20 GHz at 3.14 mm. The combination of conductive polymer and LiFe5O8 with molybdenum disulfide could effectively increase the dielectric loss of the nanocomposites, further improving the electromagnetic wave absorption performance, meeting the existing ideal requirements for electromagnetic wave absorption materials. Therefore, PPy/LiFe5O8/MoS2 nanocomposites could be the promising candidates for high-efficiency microwave absorbers.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Electronic Materials Research Laboratory & Multifunctional Materials and Structures, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Shaanxi Materials Analysis and Research Center, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
International Research Centre for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
School of Material Science and Energy Engineering, Foshan University, Foshan 528000, China
School of Electronic and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
Funding
Ministry of Science and Technology of the People's Republic of China · Central University Basic Research Fund of China · National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Shaanxi Province
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