气候变化领域集成服务门户(CCPortal): Ultra-light MXene aerogel/wood-derived porous carbon composites with wall-like “mortar/brick” structures for electromagnetic interference shielding

CCPortal

DOI	10.1016/j.scib.2020.02.009
	Ultra-light MXene aerogel/wood-derived porous carbon composites with wall-like “mortar/brick” structures for electromagnetic interference shielding
	Liang C.; Qiu H.; Song P.; Shi X.; Kong J.; Gu J.
发表日期	2020
ISSN	20959273
起始页码	616
结束页码	622
卷号	65 期号:8
英文摘要	Renewable porous biochar and 2D MXene have attracted significant attention in high-end electromagnetic interference (EMI) shielding fields, due to unique orderly structures and excellent electrical conductivity (σ) value. In this work, the wood-derived porous carbon (WPC) skeleton from natural wood was performed as a template. And excellent conductive and ultra-light 3D MXene aerogel was then constructed to prepare the MXene aerogel/WPC composites, based on highly ordered honeycomb cells inner WPC as a microreactor. Higher carbonization temperature is more conducive to the graphitization degree of natural wood. MXene aerogel/WPC composites achieve the optimal EMI SE value of up to 71.3 dB at density as low as 0.197 g/cm3. Such wall-like “mortar-brick” structures (WPC skeleton as “mortar” and MXene aerogel as “brick”) not only effectively solve the unstable structure problem of MXene aerogel networks, but also greatly prolong the transmission paths of the electromagnetic waves and dissipate the incident electromagnetic waves in the form of heat and electric energy, thereby exhibiting the superior EMI shielding performance. In addition, MXene aerogel/WPC composites also exhibit good anisotropic compressive strength, excellent thermal insulation and flame retardant properties. Such ultra-light, green and efficient multi-functional bio-carbon-based composites have great application potential in the high-end EMI shielding fields of aerospace and national defence industry, etc. © 2020 Science China Press
关键词	2D MXene Electromagnetic interference (EMI) shielding Wall-like “mortar-brick” structures Wood-derived porous carbon
英文关键词	Aerogels; Brick; Carbon carbon composites; Carbonization; Circular waveguides; Compressive strength; Electromagnetic pulse; Electromagnetic wave interference; Honeycomb structures; Mortar; Musculoskeletal system; Porous carbon; Porous materials; Shielding; Signal interference; Thermal insulation; Wood; 2D MXene; Carbon based composites; Carbonization temperatures; Electrical conductivity; Electromagnetic interference shielding; Flame retardant properties; Graphitization degree; Unstable structures; Electromagnetic shielding
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207114
作者单位	Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
推荐引用方式 GB/T 7714	Liang C.,Qiu H.,Song P.,等. Ultra-light MXene aerogel/wood-derived porous carbon composites with wall-like “mortar/brick” structures for electromagnetic interference shielding[J],2020,65(8).
APA	Liang C.,Qiu H.,Song P.,Shi X.,Kong J.,&Gu J..(2020).Ultra-light MXene aerogel/wood-derived porous carbon composites with wall-like “mortar/brick” structures for electromagnetic interference shielding.Science Bulletin,65(8).
MLA	Liang C.,et al."Ultra-light MXene aerogel/wood-derived porous carbon composites with wall-like “mortar/brick” structures for electromagnetic interference shielding".Science Bulletin 65.8(2020).