Hollow double-shell structured Void@SiO2@Co-C composite for broadband electromagnetic wave absorption
Hollow double-shell structured Void@SiO2@Co-C composite for broadband electromagnetic wave absorption
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中空双壳结构Void@SiO2@Co-C复合材料用于宽带电磁波吸收
DOI:
10.1016/j.cej.2020.128093
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发表时间:
2020-12
影响因子:
15.1
通讯作者:
Yu Ronghai
中科院分区:
文献类型:
--
作者:
Liu Guiliang;Liu Xiaofang;Song Zhiming;Sun Xin;Li Ya;Shui Jianglan;Yu Ronghai
Current electromagnetic wave (EMW) absorbing materials generally face the problem of narrow absorption bandwidth, which is the bottleneck in practical applications. Exploring new strategies and designing new architectures to overcome this problem is urgent but challenging. Here, a hollow double-shell structured magneto-electric composite, composed of an internal hollow cavity, a middle SiO2matching shell and an outer Co-C porous shell (Void@SiO2@Co-C), was prepared by assembling metal–organic-framework particles on hollow SiO2cavity and pyrolysis. The multiple magnetic resonances, magneto-electric interface polarization, defect dipole polarization and conductivity of the composite can be well tuned by controlling the pyrolysis temperature. In particular, the hollow SiO2cavity plays an essential role in improving impedance matching. Benefitting from the synergistic effect between hollow SiO2cavity, porous carbon shell and Co particles, the Void@SiO2@Co-C composite exhibits a broad effective absorption bandwidth above 7 GHz at a thin thickness of 2.2 mm, which is superior to other Co-C composites (less than 6 GHz). This work provides an effective solution for broadening the EMW absorption bandwidth.
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DOI:
10.1002/chem.201805565
发表时间:
2019
期刊:
Chemistry - A European Journal
影响因子:
--
作者:
Zhou Chenhui;Wu Chen;Liu Dong;Yan Mi
通讯作者:
Yan Mi
影响因子:
5.7
作者:
Hongyao Jia;Wan-cheng Zhou;Hanyi Nan;Chunhai Wang;Yuchang Qing;F. Luo;Dongmei Zhu
通讯作者:
Hongyao Jia;Wan-cheng Zhou;Hanyi Nan;Chunhai Wang;Yuchang Qing;F. Luo;Dongmei Zhu
DOI:
10.1016/j.compositesb.2018.02.015
发表时间:
2018-07
期刊:
Composites Part B: Engineering
影响因子:
--
作者:
Yiqin Shao;Weibang Lu;Hang Chen;J. Xiao;Y. Qiu;T. Chou
通讯作者:
Yiqin Shao;Weibang Lu;Hang Chen;J. Xiao;Y. Qiu;T. Chou
影响因子:
9.5
作者:
Pan, Guohua;Zhu, Jia;Yang, Xiaojing
通讯作者:
Yang, Xiaojing
影响因子:
9.5
作者:
Yin, Yichao;Liu, Xiaofang;Shui, Jianglan
通讯作者:
Shui, Jianglan