A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents
It is still an enormous challenge to regulate microstructure of pure carbonaceous electromagnetic (EM) wave absorbents in order to gain superior wideband microwave absorption (MA) with environmentally adaptive ability. Herein, the novel pure cellulose-derived graphite carbon materials (CGC) with abu...
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| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847824001072 |
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| author | Guangguang Guan Jiebai Li Xiaoqiang Li Jun Xiang Yangtao Zhou |
| author_facet | Guangguang Guan Jiebai Li Xiaoqiang Li Jun Xiang Yangtao Zhou |
| author_sort | Guangguang Guan |
| collection | DOAJ |
| description | It is still an enormous challenge to regulate microstructure of pure carbonaceous electromagnetic (EM) wave absorbents in order to gain superior wideband microwave absorption (MA) with environmentally adaptive ability. Herein, the novel pure cellulose-derived graphite carbon materials (CGC) with abundant defects were fabricated via the self-assembly strategy combined with simple carbonization for the first time. The EM and MA performance of as-prepared CGC with different carbonization temperatures were studied in detail. The minimum reflection loss of CGC was up to −46.2 dB (over 99.99% MA) at only 1.42 mm, and the maximum effective absorption bandwidth (EABmax, RL < −10 dB) was as wide as 6.32 GHz. The greatly improved MA of pure carbon materials outperformed those of many previously reported carbon-based composite absorbents with tedious preparation process. The excellent MA property was attributed to the optimal synergy of good impedance matching and satisfactory EM attenuation capability. Besides, the CGC still retains a strong and broadband MA ability in the simulated real harsh environmental conditions (acid rain/alkaline solution, salt spray and strong UV exposure). Hence, the CGC is believed to be a very promising candidate as high-efficiency EM wave absorbents with wide frequency and excellent environmental adaptability for practical application. |
| format | Article |
| id | doaj-art-5a9b1d1ecfbf46fcb61c6ff676f23ebd |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-5a9b1d1ecfbf46fcb61c6ff676f23ebd2025-01-14T04:12:29ZengElsevierJournal of Materiomics2352-84782025-03-01112100881A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbentsGuangguang Guan0Jiebai Li1Xiaoqiang Li2Jun Xiang3Yangtao Zhou4Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, ChinaInstitute of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, ChinaSchool of Science, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Corresponding author.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China; Corresponding author.It is still an enormous challenge to regulate microstructure of pure carbonaceous electromagnetic (EM) wave absorbents in order to gain superior wideband microwave absorption (MA) with environmentally adaptive ability. Herein, the novel pure cellulose-derived graphite carbon materials (CGC) with abundant defects were fabricated via the self-assembly strategy combined with simple carbonization for the first time. The EM and MA performance of as-prepared CGC with different carbonization temperatures were studied in detail. The minimum reflection loss of CGC was up to −46.2 dB (over 99.99% MA) at only 1.42 mm, and the maximum effective absorption bandwidth (EABmax, RL < −10 dB) was as wide as 6.32 GHz. The greatly improved MA of pure carbon materials outperformed those of many previously reported carbon-based composite absorbents with tedious preparation process. The excellent MA property was attributed to the optimal synergy of good impedance matching and satisfactory EM attenuation capability. Besides, the CGC still retains a strong and broadband MA ability in the simulated real harsh environmental conditions (acid rain/alkaline solution, salt spray and strong UV exposure). Hence, the CGC is believed to be a very promising candidate as high-efficiency EM wave absorbents with wide frequency and excellent environmental adaptability for practical application.http://www.sciencedirect.com/science/article/pii/S2352847824001072Graphitic carbonCelluloseMicrowave absorptionEnvironment adaptabilityPolarizationImpedance matching |
| spellingShingle | Guangguang Guan Jiebai Li Xiaoqiang Li Jun Xiang Yangtao Zhou A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents Journal of Materiomics Graphitic carbon Cellulose Microwave absorption Environment adaptability Polarization Impedance matching |
| title | A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents |
| title_full | A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents |
| title_fullStr | A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents |
| title_full_unstemmed | A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents |
| title_short | A novel cellulose-derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents |
| title_sort | novel cellulose derived graphite carbon with abundant defects for excellent environmental adaptability and superior wideband microwave absorbents |
| topic | Graphitic carbon Cellulose Microwave absorption Environment adaptability Polarization Impedance matching |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824001072 |
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