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Journal of Materials Science: Materials in Electronics

Erschienen in:

04.09.2021

Conductive polymer-decorated lanthanum chromate with remarkable electromagnetic wave absorption properties

verfasst von: Gaoqiang Yu, Mingquan Ye, Aijun Han, Jun Liao, Jianming Guo, Qingzhong Liu

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 20/2021

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Abstract

To solve the problem of electromagnetic (EM) wave pollution and improve the stealth capabilities of national defense weapons and equipment, it is particularly important to develop brilliant EM wave absorbing materials. In this work, LaCrO₃/PANI and LaCrO₃/PPY composites were synthesized by in situ chemical oxidative polymerization. The introduction of conductive polymer (PANI or PPY) significantly improves the EM wave absorption properties of the composite compared with those of pure LaCrO₃. Especially, sample LaCrO₃/PANI-4 obtained an effective absorption bandwidth of 5.8 GHz, covering almost the entire Ku band, at a thickness of only 2.5 mm. While sample LaCrO₃/PPY-2 shows a minimum RL value of − 45 dB with a matching thickness of 3 mm. Noteworthy, the effective absorption bandwidth of samples LaCrO₃/PPY-2 and LaCrO₃/PPY-3 can achieve 83.5% and 85.9% coverage of the 1–18 GHz band range, by adjusting the matching thicknesses. As a result, LaCrO₃/PANI and LaCrO₃/PPY composites are promising to be effective EM wave absorbers with wide application prospects on account of their unique superiorities.

Vorheriger Artikel Enhancement of performance of triboelectric generators by introduction of micro- and nano-structures on triboelectric films

Nächster Artikel Study on the fabricated non-stoichiometric titanium dioxide by in-situ reduction with carbon powder via spark plasma sintering

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Titel: Conductive polymer-decorated lanthanum chromate with remarkable electromagnetic wave absorption properties
verfasst von: Gaoqiang Yu
Mingquan Ye
Aijun Han
Jun Liao
Jianming Guo
Qingzhong Liu
Publikationsdatum: 04.09.2021
Verlag: Springer US
Erschienen in: Journal of Materials Science: Materials in Electronics / Ausgabe 20/2021
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-021-06821-6

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