| 引用本文: | 李松岩,田晓霞,屈绍波,王甲富,王军,李辰琛,马丽斯.Co-Ni@N-C/多孔碳复合材料的制备及电磁特性[J].材料科学与工艺,2022,30(5):51-59.DOI:10.11951/j.issn.1005-0299.20210257. |
| LI Songyan,TIAN Xiaoxia,QU Shaobo,WANG Jiafu,WANG Jun,LI Chenchen,MA Lisi.Preparation and electromagnetic properties of Co-Ni@N-C/porous carbon composites[J].Materials Science and Technology,2022,30(5):51-59.DOI:10.11951/j.issn.1005-0299.20210257. |
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| 摘要: |
| 以制备的多孔碳为基材,采用热还原法通过原位生长制备轻质化Co-Ni@N-C/多孔碳复合材料,研究了多孔碳的添加量对样品电磁波吸收性能的影响。采用X射线衍射仪(XRD)、扫描电镜(SEM)、X射线光电子能谱(XPS)、拉曼光谱(Raman)对样品的相结构、组分和微观形貌进行表征。通过矢量网络分析仪对样品在2~18 GHz频段内的电磁参数进行测试,并根据传输线理论分析了样品的电磁波吸收性能。结果表明:以多孔碳为基材制备的Co-Ni@N-C/多孔碳样品,当多孔碳含量占原材料总质量的2.7%时,样品具有良好的电磁波吸收性能,最大反射损耗值为-57.74 dB(15.12 GHz,2.35 mm),最大有效吸收带宽为5.14 GHz(12.86~18 GHz,2.25 mm),基本覆盖整个Ku波段。 |
| 关键词: Co-Ni@N-C/多孔碳 金属有机框架 电磁波吸收 阻抗匹配 界面极化 |
| DOI：10.11951/j.issn.1005-0299.20210257 |
| 分类号:TB333 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(21471159)；陕西省自然科学基金资助项目(2019JZ-40). |
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| Preparation and electromagnetic properties of Co-Ni@N-C/porous carbon composites |
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LI Songyan, TIAN Xiaoxia, QU Shaobo, WANG Jiafu, WANG Jun, LI Chenchen, MA Lisi
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(Department of Basic Sciences, Air Force Engineering University, Xi′an 710051, China)
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| Abstract: |
| Taking porous carbon as base material, lightweight Co-Ni@N-C/porous carbon composites were prepared by thermal reduction and in-situ growth, and effects of porous carbon on the electromagnetic wave absorption properties of samples were studied. The phase structure, components, and micromorphology of the samples were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy (Raman). The electromagnetic parameters in 2~18 GHz band were measured by coaxial method using vector network analyzer, and the electromagnetic wave absorption properties of samples were analyzed according to the transmission line theory. Results show that for the prepared Co-Ni@N-C/porous carbon sample,when the amount of porous carbon accounted for 2.7% of the total mass of raw material, the sample had excellent electromagnetic wave absorption properties. The maximum reflection loss value was -57.74 dB (15.12 GHz, 2.35 mm), and the maximum effective absorption bandwidth was 5.14 GHz (12.86~18 GHz, 2.25 mm), which basically covered the entire Ku band. |
| Key words: Co-Ni@N-C/porous carbon metal organic framework electromagnetic wave absorption impedance matching interfacial polarization |
