Novel Microwave Absorption Materials of Porous Flower-Like Nickel Oxide@Polyaniline in the X-Band

Ye Liu; Honglong Xing; Lei Wang; Zhenfeng Liu; Huan Wang; Hanxiao Jia

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자료유형: 학술저널

저자정보: Ye Liu (Anhui University of Science and Technology) Honglong Xing (Anhui University of Science and Technology) Lei Wang (Anhui University of Science and Technology) Zhenfeng Liu (Anhui University of Science and Technology) Huan Wang (Anhui University of Science and Technology) Hanxiao Jia (Anhui University of Science and Technology)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.13 No.6

발행연도: 2018.1

수록면: 22 - 31 (10page)

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Porous flower nickel oxide@polyaniline (NiO@PANI) composites as excellent microwave absorption (MA) materials in the X-band were synthesized via a two-step strategy in this work. The porous NiO flower is uniformly dispersed and homogeneous in particle size after Ostwald ripening process. Coating conductive PANI on the surface of porous NiO microspheres could improve interfacial polarization and dielectric loss property that will lead to a great improvement of MA properties. Electromagnetic (EM) parameters of NiO@PANI composites with different NiO contents were investigated by a vector network analyzer and the reflection loss (RL) values with varied thickness were also calculated. The results showed that the effective absorption bandwidths (RL < -10 dB) of all NiO@PANI composites can cover the whole X-band. Especially, the NiO@PANI0.1 composite is able to attenuate microwave energy in the X-band with the thickness of 2.5mm. The NiO@PANI0.2 has a maximum RL of -32.8 dB at 10.1GHz and the effective absorption bandwidths cover 4.64GHz (11.12–15.76GHz) at 2.0mm. The excellent MA absorption performance may be ascribed to the polarization effect, dielectric loss and structure of porous flower-like NiO@PANI. Our work confirms that the synthesized NiO@PANI composite is an attractive candidate as a highly efficient MA material in the X-band.

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참고문헌 신청

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Y. Wang / 2017 / Ceram. Int. 3:11367

Y. Wang / 2018 / Mater. Res. Bull. 98:59

Y. Wang / 2017 / Synthetic Met 228:18

P. J. Bora / 2018 / Compos. Part B-Eng. 134:151

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