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Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance

文献类型：期刊论文

作者Feng, Yingrui4; Hu, Kang4; Zhang, Min4; Ding, Wei1,2,3; Kong, Xiangkai4; Sheng, Zhigao3; Liu, Qiangchun4
刊名JOURNAL OF MATERIALS SCIENCE
出版日期2022-01-03
ISSN号0022-2461
DOI10.1007/s10853-021-06650-2
通讯作者Kong, Xiangkai(kxk@chnu.edu.cn) ; Sheng, Zhigao(zhigaosheng@hmfl.ac.cn) ; Liu, Qiangchun(qchliu@chnu.edu.cn)
英文摘要Rationally designing microwave absorption materials with highly efficient and tunable bandwidth is in great demand but remains a huge challenge. In this study, perovskite oxide LaCoO3 thin sheets have been obtained by the hydrothermal synthesis and subsequent annealing process. Then, cation deficiency is introduced to the A-site of LaCoO3 via a selectively etching strategy by FeCl3 solution. The phase characteristics, morphologies, structures, and microwave absorption performance of LaCoO3 thin sheets with A-site cation deficiency have been systematically investigated. The results indicate that a suitable introduction of the A-site cation deficiency is beneficial to induce more dipole polarization, leading to the enhancement of the microwave absorption performance. When the amount of FeCl3 is 0.3 g, the LaCoO3 thin sheets exhibited superior reflection loss characteristics in the range of test frequency. Exhilaratingly, a minimum reflection loss (RL) value of - 56.9 dB at 15.1 GHz can be achieved with a thin thickness of 2.0 mm. Meanwhile, a broad effective absorption bandwidth reaches 5.9 GHz, covering the range of 12.1-18.0 GHz. It is believed that introducing the A-site cation deficiency of LaCoO3 can be used as an effective means for tuning microwave absorption.
WOS关键词PEROVSKITE OXIDES ; COMPOSITES ; SHELL ; MICROSPHERES
资助项目National Natural Science Foundation of China[51602116] ; National Natural Science Foundation of China[11904116] ; Natural Science Foundation of Anhui Province[1708085QB40] ; Natural Science Foundation of Anhui Province[1908085QA36] ; Postdoctoral Research Foundation of China[2016M600492]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000737865000022
出版者SPRINGER
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; Postdoctoral Research Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/127225]  
专题中国科学院合肥物质科学研究院
通讯作者Kong, Xiangkai; Sheng, Zhigao; Liu, Qiangchun
作者单位1.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China
2.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China
3.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China
4.Huaibei Normal Univ, Sch Phys & Elect Informat, Anhui Prov Key Lab Pollutant Sensit Mat & Environ, Huaibei 235000, Peoples R China
推荐引用方式
GB/T 7714		 Feng, Yingrui,Hu, Kang,Zhang, Min,et al. Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance[J]. JOURNAL OF MATERIALS SCIENCE,2022.
APA Feng, Yingrui.,Hu, Kang.,Zhang, Min.,Ding, Wei.,Kong, Xiangkai.,...&Liu, Qiangchun.(2022).Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance.JOURNAL OF MATERIALS SCIENCE.
MLA Feng, Yingrui,et al."Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance".JOURNAL OF MATERIALS SCIENCE (2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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