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Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption

Cobalt sulfide composites have exhibited great potential in terms of microwave absorption, owing to their low price, relatively high capacitance, and excellent electrocatalytic activity. Thus, a novel core-shell like structure comprising cobalt sulfide@polypyrrole (CoS@PPy) composite was synthesized...

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Autores principales: Liu, Hui, Cui, Guangzhen, Li, Ling, Zhang, Zhi, Lv, Xuliang, Wang, Xinxin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022952/
https://www.ncbi.nlm.nih.gov/pubmed/31963561
http://dx.doi.org/10.3390/nano10010166
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author Liu, Hui
Cui, Guangzhen
Li, Ling
Zhang, Zhi
Lv, Xuliang
Wang, Xinxin
author_facet Liu, Hui
Cui, Guangzhen
Li, Ling
Zhang, Zhi
Lv, Xuliang
Wang, Xinxin
author_sort Liu, Hui
collection PubMed
description Cobalt sulfide composites have exhibited great potential in terms of microwave absorption, owing to their low price, relatively high capacitance, and excellent electrocatalytic activity. Thus, a novel core-shell like structure comprising cobalt sulfide@polypyrrole (CoS@PPy) composite was synthesized by a facile solvothermal synthesis method and in situ polymerization. When coated by the heterostructure polypyrrole aerogel, CoS@PPy composite exhibited excellent microwave absorption properties with an optimal reflection loss (R(L)) of −41.8 dB at 6.96 GHz. Furthermore, the absorption bandwidth (R(L) < −10 dB) of 5.4 GHz could be reached at a coating thickness of 2.05 mm, probably attributing to the synergistic effect of good impedance matching, interfacial polarization, dipole polarization, and conductivity loss. Moreover, this work proposed a loss mechanism mode which probably occurred in the CoS@PPy composites. It was demonstrated that the CoS@PPy composite is a promising material in the field of electromagnetic wave absorption.
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spelling pubmed-70229522020-03-12 Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption Liu, Hui Cui, Guangzhen Li, Ling Zhang, Zhi Lv, Xuliang Wang, Xinxin Nanomaterials (Basel) Article Cobalt sulfide composites have exhibited great potential in terms of microwave absorption, owing to their low price, relatively high capacitance, and excellent electrocatalytic activity. Thus, a novel core-shell like structure comprising cobalt sulfide@polypyrrole (CoS@PPy) composite was synthesized by a facile solvothermal synthesis method and in situ polymerization. When coated by the heterostructure polypyrrole aerogel, CoS@PPy composite exhibited excellent microwave absorption properties with an optimal reflection loss (R(L)) of −41.8 dB at 6.96 GHz. Furthermore, the absorption bandwidth (R(L) < −10 dB) of 5.4 GHz could be reached at a coating thickness of 2.05 mm, probably attributing to the synergistic effect of good impedance matching, interfacial polarization, dipole polarization, and conductivity loss. Moreover, this work proposed a loss mechanism mode which probably occurred in the CoS@PPy composites. It was demonstrated that the CoS@PPy composite is a promising material in the field of electromagnetic wave absorption. MDPI 2020-01-17 /pmc/articles/PMC7022952/ /pubmed/31963561 http://dx.doi.org/10.3390/nano10010166 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Hui
Cui, Guangzhen
Li, Ling
Zhang, Zhi
Lv, Xuliang
Wang, Xinxin
Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption
title Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption
title_full Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption
title_fullStr Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption
title_full_unstemmed Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption
title_short Polypyrrole Chains Decorated on CoS Spheres: A Core-Shell Like Heterostructure for High-Performance Microwave Absorption
title_sort polypyrrole chains decorated on cos spheres: a core-shell like heterostructure for high-performance microwave absorption
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022952/
https://www.ncbi.nlm.nih.gov/pubmed/31963561
http://dx.doi.org/10.3390/nano10010166
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