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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