Permittivity-Regulating Strategy Enabling Superior Electromagnetic Wave Absorption of Lithium Aluminum Silicate/rGO Nanocomposites

doi:10.1021/acsami.9b00348

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	Permittivity-Regulating Strategy Enabling Superior Electromagnetic Wave Absorption of Lithium Aluminum Silicate/rGO Nanocomposites
	Lu, Siru 1; Xia, Long 1; Xu, Jiaming 1; Ding, Chuheng 1; Li, Tiantian 1; Yang, Hua 2; Zhong, Bo 1; Zhang, Tao 1; Huang, Longnan 1; Xiong, Li 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2019-05-22
卷号	11 期号:20 页码:18626-18636
关键词	lithium aluminum silicate graphene microwave absorption nanoparticles complex permittivity impedance matching
ISSN号	1944-8244
DOI	10.1021/acsami.9b00348
英文摘要	Lithium aluminum silicate (LAS) nanoparticles have been successfully loaded on graphene nanosheets by adding a silane coupling agent KH-550 by sol-gel process, hydrothermal reaction, and heat treatment process. By regulating the complex permittivity of reduced graphene oxide (rGO) by LAS nanoparticles and KH-550, LAS/rGO-KH-550 possesses excellent microwave absorption performance. The maximum reflection loss of LAS/rGO-KH-550 reaches -62.25 dB at 16.48 GHz with thickness of only 2.7 mm, and the widest bandwidth is up to 6.64 GHz below -10 dB. The LAS/rGO-KH-550 has effective absorption (99.9%) below -20 dB at all X and Ku bands (8-18 GHz). Also, the added quantity of composites in the paraffin matrix is only 20 wt %. The results demonstrate that the interfacial polarization, the Debye dipolar relaxation, the well-matched characteristic impedance, and the quarter-wavelength matching all play important roles in improving the microwave absorption properties of LAS/rGO-KH-550 nanocomposites. Consequently, the LAS/rGO-KH-550 nanocomposites can be readily applied as an ultra wide-band, light weight, and ultra-high-performance microwave-absorbing material.
资助项目	National Natural Science Foundation of China[51621091] ; National Natural Science Foundation of China[51372052] ; National Natural Science Foundation of China[51772060] ; National Natural Science Foundation of China[51302050]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000469288300060
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31857]
专题	理学院
通讯作者	Xia, Long
作者单位	1.Harbin Inst Technol Weihai, Sch Mat Sci & Engn, Weihai 264209, Peoples R China 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China 3.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China 4.Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255000, Peoples R China
推荐引用方式 GB/T 7714	Lu, Siru,Xia, Long,Xu, Jiaming,et al. Permittivity-Regulating Strategy Enabling Superior Electromagnetic Wave Absorption of Lithium Aluminum Silicate/rGO Nanocomposites[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(20):18626-18636.
APA	Lu, Siru.,Xia, Long.,Xu, Jiaming.,Ding, Chuheng.,Li, Tiantian.,...&Wen, Guangwu.(2019).Permittivity-Regulating Strategy Enabling Superior Electromagnetic Wave Absorption of Lithium Aluminum Silicate/rGO Nanocomposites.ACS APPLIED MATERIALS & INTERFACES,11(20),18626-18636.
MLA	Lu, Siru,et al."Permittivity-Regulating Strategy Enabling Superior Electromagnetic Wave Absorption of Lithium Aluminum Silicate/rGO Nanocomposites".ACS APPLIED MATERIALS & INTERFACES 11.20(2019):18626-18636.