Hierarchical NiCo2O4/Co3O4/NiO porous composite: a lightweight electromagnetic wave absorber with tunable absorbing performance

被引：185
作者：
Liu, Xiaofang [1 ]
Hao, Chengcheng [1 ]
Jiang, He [2 ]
Zeng, Min [1 ]
Yu, Ronghai [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[2] Tsinghua Univ, Sch Mat Sci & Engn, Ctr Testing & Analyzing, Beijing 100191, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2017年 / 5卷 / 15期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
ENHANCED MICROWAVE-ABSORPTION; FACILE SYNTHESIS; POLYVINYLIDENE FLUORIDE; HYDROTHERMAL SYNTHESIS; HOLLOW SPHERE; NANOCOMPOSITES; MICROSPHERES; TEMPERATURE; GRAPHENE; ZNO;
D O I：
10.1039/c6tc05167g
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hierarchical NiCo2O4/Co3O4/NiO composite was fabricated through a facile hydrothermal method, followed by a post-annealing treatment. The obtained ternary composite, with a flower-like morphology, consists of radially assembled porous nanosheets. Benefiting from the unique structure and the synergistic effect among multiple components, the NiCo2O4/Co3O4/NiO composite exhibited strong electromagnetic wave (EMW) absorption in both low-frequency and high-frequency regions by simply changing its filler loading in the matrix. The absorber with a filler loading of 30 wt% possessed a reflection loss of -28.6 dB at a small layer thickness of 1.64 mm in the K-u band, while the absorber with less filler loading at 20 wt% achieved a reflection loss of -57.0 dB in the C band. The light weight, small thickness, strong and tunable absorbing property of the NiCo2O4/Co3O4/NiO composite make it attractive for developing a high-performance electromagnetic wave absorber.
引用
收藏
页码：3770 / 3778
页数：9
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