Application of N-doped NiCo2O4/NiO/Co3O4 composites rich in oxygen vacancies in electromagnetic wave absorption

被引：0

作者：

Li, Junkang ^{[1
]}

Yang, Yiqing ^{[3
]}

Ma, Yongqing ^{[1
]}

Zhu, Chuhong ^{[1
]}

Wang, Meiling ^{[1
]}

Dai, Zhenxiang ^{[2
]}

Zheng, Ganhong ^{[1
]}

Ding, Wei ^{[3
]}

Sheng, Zhigao ^{[4
]}

机构：

[1] Anhui Univ, Sch Mat Sci & Engn, Hefei 230601, Peoples R China

[2] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China

[3] Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China

[4] Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China

来源：

NANOTECHNOLOGY | 2024年 / 35卷 / 44期

基金：

中国国家自然科学基金;

关键词：

NiCo2O4/NiO/Co3O4; composites; N-doped; oxygen vacancy; microwave absorption; PERFORMANCE; MORPHOLOGY; FRAMEWORKS;

D O I：

10.1088/1361-6528/ad6c57

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, N-doped and oxygen vacancy-rich NiCo2O4/NiO/Co3O4 composites are synthesized by the direct calcination method. Noticeably, by changing the additive concentrations of urea dissolved in DMF (N-N dimethylformamide), the electromagnetic wave (EMW) absorption abilities of NiCo2O4/NiO/Co3O4 composite effectively. A maximum reflection loss (RLmax) value at 12.94 GHz for a 2.8 mm thick sheet is -29.76 dB, while its effective absorption bandwidth (RL < -10 dB) reaches 4.21 GHz. In-depth research of possible mechanisms of EMW absorption enhancement. Owing to its simple preparation method and superb EMW absorption properties, the NiCo2O4/NiO/Co3O4 composites have a chance to be suitable candidates for high-property EMW absorbers.

引用

页数：11

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