Nature-inspired 3D hierarchical structured "vine" for efficient microwave attenuation and electromagnetic energy conversion device

被引：154

作者：

Wang, Qiangqiang ^{[1
]}

Niu, Ben ^{[2
]}

Han, Yuhang ^{[2
]}

Zheng, Qi ^{[1
]}

Li, Lin ^{[2
]}

Cao, Maosheng ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Harbin Normal Univ, Sch Phys & Electron Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2023年 / 452卷

基金：

中国国家自然科学基金;

关键词：

Nature; -inspired; Hierarchical microstructure; Microwave absorption; Electromagnetic interference shielding; Supercapacitance; Energy conversion; REDUCED GRAPHENE OXIDE; CARBON NANOTUBES; WSE2; NANOSHEETS; ABSORPTION; INTERFERENCE; PERFORMANCE; NANOCOMPOSITES; NANOPARTICLES; ENHANCEMENT;

D O I：

10.1016/j.cej.2022.139042

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The rapid development of electronic technology has brought great convenience to human society, however, serious electromagnetic (EM) radiation pollution and energy problems are also coming to the fore. Effective addressing and conversing EM pollution is a crucial topic. Here, inspired by green vines in nature, a hierarchical structured nano-micro "vine" was constructed. Thanks to the synergistic enhancement among carbon nanotube "stems", tungsten diselenide "leaves" and cobalt tetroxide "chloroplasts", excellent microwave absorption with a reflection loss (RL) of up to-56.9 dB and effective absorption bandwidth (EAB) of 6.56 GHz was obtained. More meaningful, efficient green electromagnetic interference (EMI) shielding was achieved and a credibility index of green EMI shielding (cg) was proposed for the first time. In addition, considerable supercapacitance performance was obtained. Creatively, we constructed a microwave recovery device integrated multi-function. Harmful EM radiation is efficiently harvested and converted into useful electrical energy and stored. This work provides a pioneering strategy for designing EM functional materials and handling EM pollution.

引用

页数：12

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