材料科学
微波食品加热
兴奋剂
多孔性
海绵
化学工程
纳米技术
吸收(声学)
复合材料
光电子学
电信
计算机科学
植物
生物
工程类
作者
Qingmei Hu,Rongliang Yang,Zichao Mo,Dongwei Lu,Leilei Yang,Z. H. He,Hai Zhu,Zikang Tang,Xuchun Gui
出处
期刊:Carbon
[Elsevier]
日期:2019-11-01
卷期号:153: 737-744
被引量:155
标识
DOI:10.1016/j.carbon.2019.07.077
摘要
Abstract Lightweight, highly efficient, thermal stable microwave absorption materials are highly desirable but challenging for electromagnetic protection. Impedance matching and electromagnetic loss are two crucial factors for the microwave absorption materials design. Here, we successfully designed and synthesized a lightweight (31.5 mg/cm3) and porous NiCo2O4@carbon nanotubes (CNTs) hybrid sponge (NiCo2O4@CNTs) based on N-doped and Fe-filled CNTs. The as-prepared NiCo2O4@CNTs shows high thermal stability (>500 °C) and excellent microwave absorption properties with a minimum reflection loss value of - 45.1 dB at 9.0 GHz for absorber thickness of 2.5 mm. Moreover, the maximum absorption peak frequency and effective microwave absorption region (
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