Efficient microwave absorbing materials based on LiCo0.94Mg0.06O2 filled MgO ceramics in the X-hand

被引：6

作者：

Yang, Minghao ^{[1
]}

Zhou, Wancheng ^{[1
]}

Feng, Gangli ^{[1
]}

Luo, Fa ^{[1
]}

Zhu, Dongmei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 12期

关键词：

ABSORPTION PROPERTIES; LITHIUM DEINTERCALATION; ELECTRONIC-PROPERTIES; LICOO2; ENHANCEMENT; CONDUCTIVITY; OXIDES; CARBON; XPS; NIO;

D O I：

10.1007/s10854-019-01508-5

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The dielectric and microwave absorption properties of LiCo0.94Mg0.06O2, which is application into lithium batteries areas, have not yet been conducted. In this work, LiCo0.94Mg0.06O2 was synthesized using a solid-state reaction. LiCo0.94Mg0.06O2/MgO composite ceramics with excellent microwave absorption property were prepared by pressureless sintering method. The characteristics of the composite ceramics, such as phase composition, microstructure, electromagnetic properties and reflection loss (R-L) were investigated. The influence of sintering temperature on composite ceramics was discussed and the possible mechanism was analyzed. Both the real and imaginary parts of the complex permittivity increased with increasing LiCo0.94Mg0.06O2- content. Suitable values and frequency dependence of the complex permittivity of LiCo0.94Mg0.06O2 powders filled MgO ceramics can be obtained. The 40 wt% LiCo0.94Mg0.06O2 filled MgO ceramics in a thickness of 1.8mm has the lowest reflection loss (R-L<-5dB bandwidth in all X-band). This result suggests that composite ceramics could be good candidates to become efficient microwave absorption materials in X-band.

引用

页码：11529 / 11535

页数：7

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