Preparation and characterization of branch-like heteroatoms-doped Ni@C nanofibers for high-performance microwave absorption with thin thickness

被引：69

作者：

Wang, Chenghao ^{[1
]}

Zong, LiShuai ^{[1
]}

Pan, Yunxing ^{[1
]}

Li, Nan ^{[1
]}

Liu, Qian ^{[1
]}

Wang, Jinyan ^{[1
]}

Jian, Xigao ^{[1
]}

机构：

[1] Dalian Univ Technol, Liaoning Prov Engn Res Ctr High Performance Resin, Dept Polymer Sci & Mat, State Key Lab Fine Chem, Dalian 116024, Peoples R China

来源：

COMPOSITES PART B-ENGINEERING | 2021年 / 223卷

基金：

中国国家自然科学基金;

关键词：

Nanofibers; Microwave absorption; Heteroatoms-doped; Multiple interfaces; ELECTROMAGNETIC-WAVE ABSORPTION; REDUCED GRAPHENE OXIDE; CARBON NANOFIBERS; FORMATION MECHANISM; FACILE SYNTHESIS; BROAD-BAND; NANOTUBES; NANOCOMPOSITES; LIGHTWEIGHT; COMPOSITES;

D O I：

10.1016/j.compositesb.2021.109114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic Ni@C nanofibers with branch-like multiwall carbon nanotubes (MWCNTs) were prepared through a two-step strategy of electrospinning and following in situ pyrolysis to explore the electromagnetic microwave absorption (MA) performance. The morphology and chemical composition were controlled by mass ratio of nickel (II) acetylacetone (Ni(acac)2) and poly (phthalazinone ether nitrile ketone) (PPENK) resin. 3D structure with branch-like morphology extends the transmission path of microwave and reduces the thickness effectively. The heteroatoms-doped Ni@C nanofibers reach the optimal reflection loss value of -53.2 dB at 14.3 GHz and effective absorption bandwidth of 5.6 GHz from 12.4 to 18.0 GHz with rather thin thickness of 1.5 mm. The MA mechanisms are discussed in detail and the multi-component nanofibers of magnetic Ni particles and nonmagnetic carbon have achieved synergistic effect of dielectric and magnetic loss. This work explores the relevancy of morphology and composition on microwave absorption performance, revealing a potential application for excellent microwave absorber with low filler ratio and thinner matching thickness.

引用

页数：9

共 57 条

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