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Li S, Liu B, Jia X, Xu M, Zong R, Li X, Liu G, Huai X. Numerical Simulation on the Optimization of the Anisotropic Thermal Conductivity of Hexagonal Boron Nitride/Nanofiber Composite Films. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Shikun Li
- Beijing Key Laboratory of Multiphase Flow and Heat Transfer for Low Grade Energy Utilization, North China Electric Power University, Beijing 102206, China
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
| | - Bin Liu
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
| | - Xiao Jia
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
| | - Min Xu
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
| | - Ruoyu Zong
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
| | - Xunfeng Li
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
| | - Guohua Liu
- Beijing Key Laboratory of Multiphase Flow and Heat Transfer for Low Grade Energy Utilization, North China Electric Power University, Beijing 102206, China
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiulan Huai
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- Nanjing Institute of Future Energy System, Nanjing 211135, China
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Construction of heterointerfaces and honeycomb-like structure for ultrabroad microwave absorption. J Colloid Interface Sci 2022; 627:102-112. [PMID: 35842961 DOI: 10.1016/j.jcis.2022.07.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 11/20/2022]
Abstract
Heterointerface design is an effective strategy to improve the effective absorption bandwidth in electromagnetic wave EMW absorbing materials. In this paper, honeycomb-like Fe-doped tremella carbide composites (FCT) with a large number of heterogeneous interfaces were obtained by in-situ construction of multiphase composite particles (Fe3C, Fe3O4, and a-Fe) during the carbonization process. The effects of Fe doping on the phase, structure, morphology, and absorption properties of FCT were investigated. The results show that the porous structure and the heterogeneous interface can significantly improve the electromagnetic wave absorption performance of FCT. Iron doping introduces a heterogeneous multiphase structure into FCT, which increases the interfacial loss and magnetic loss of the material, thereby improving the overall impedance matching of the material. FCT-4 composite exhibited excellent microwave attenuation capability with a reflection loss of -34.6 dB. Simultaneously, the widest effective absorption bandwidth is up to 8.84 GHz (9.16-18 GHz) with a matching thickness of 2.8 mm, which covers almost the entire X (8-12 GHz) and Ku (12-18 GHz) bands. Thus, this paper provides an effective strategy for the preparation of excellent electromagnetic wave absorbing materials by in situ construction of heterointerfaces.
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