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Nanocellulose-polysilazane single-source-precursor derived defect-rich carbon nanofibers/SiCN nanocomposites with excellent electromagnetic absorption performance

Liu, Xingmin ; Li, Minghang ; Liu, Heqiang ; Duan, Wenyan ; Fasel, Claudia ; Chen, Yongchao ; Qu, Fangmu ; Xie, Wenjie ; Fan, Xiaomeng ; Riedel, Ralf ; Weidenkaff, Anke (2022)
Nanocellulose-polysilazane single-source-precursor derived defect-rich carbon nanofibers/SiCN nanocomposites with excellent electromagnetic absorption performance.
In: Carbon, 188
doi: 10.1016/j.carbon.2021.11.058
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Ceramic SiCN nanocomposites modified with nanocellulose derived defect-rich carbon nanofibers (CNFsSiCN) were developed by thermolysis of nanocelulose-polysilazane single-source precursors (SSPs). Multi-loss mechanisms (i.g. polarization loss and conductive loss) were established in the SiCN ceramic nanocomposites by employing the defect-rich structure of CNFs. Cole-Cole circle plots indicate that the CNFs-SiCN ceramics possess strong polarization capability due to the defect-rich structure of the CNFs. Dielectric loss values fitted by the Debye theory showed that the proportion of polarization loss reaches an unprecedented high value, accounting for 52.1% of the total dielectric loss. When the content of nanocellulose is 10 wt% of SSPs, the minimal reflection coefficient (RCmin) and effective absorption bandwidth (EABs) of CNFs-SiCN ceramic can reach -36.3 dB and 3.0 GHz, respectively. This work may contribute new ideas for establishing multi-loss mechanisms in ceramic-based materials, finding a new application for nanocellulose, and shaping the design of novel absorbents.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Liu, Xingmin ; Li, Minghang ; Liu, Heqiang ; Duan, Wenyan ; Fasel, Claudia ; Chen, Yongchao ; Qu, Fangmu ; Xie, Wenjie ; Fan, Xiaomeng ; Riedel, Ralf ; Weidenkaff, Anke
Art des Eintrags: Bibliographie
Titel: Nanocellulose-polysilazane single-source-precursor derived defect-rich carbon nanofibers/SiCN nanocomposites with excellent electromagnetic absorption performance
Sprache: Englisch
Publikationsjahr: März 2022
Verlag: Pergamon-Elsevier Science
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Carbon
Jahrgang/Volume einer Zeitschrift: 188
DOI: 10.1016/j.carbon.2021.11.058
Kurzbeschreibung (Abstract):

Ceramic SiCN nanocomposites modified with nanocellulose derived defect-rich carbon nanofibers (CNFsSiCN) were developed by thermolysis of nanocelulose-polysilazane single-source precursors (SSPs). Multi-loss mechanisms (i.g. polarization loss and conductive loss) were established in the SiCN ceramic nanocomposites by employing the defect-rich structure of CNFs. Cole-Cole circle plots indicate that the CNFs-SiCN ceramics possess strong polarization capability due to the defect-rich structure of the CNFs. Dielectric loss values fitted by the Debye theory showed that the proportion of polarization loss reaches an unprecedented high value, accounting for 52.1% of the total dielectric loss. When the content of nanocellulose is 10 wt% of SSPs, the minimal reflection coefficient (RCmin) and effective absorption bandwidth (EABs) of CNFs-SiCN ceramic can reach -36.3 dB and 3.0 GHz, respectively. This work may contribute new ideas for establishing multi-loss mechanisms in ceramic-based materials, finding a new application for nanocellulose, and shaping the design of novel absorbents.

Freie Schlagworte: PDCs, Nanocellulose, Carbon nanofibers, Defect-rich, Electromagnetic absorption, Microwave-absorption, Graphene oxide, Microspheres, Aerogels, Morphology, Composite, Ceramics
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement
Hinterlegungsdatum: 03 Jan 2022 07:36
Letzte Änderung: 03 Jan 2022 07:36
PPN:
Projekte: National Natural Science Foundation of China (NSFC), Grant Numbers 52002325, 51332004
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