引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1620次   下载 1454 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Preparation and Characterization of Storage and Emission Functional Material of Cs2O-doped 12CaO·7Al2O3
Shen Ning,Jing Shen,Xing-long Li,Quan-xin Li*
Author NameAffiliationE-mail
Shen Ning Department of Chemical Physics, Lab of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China  
Jing Shen Department of Chemical Physics, Lab of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China  
Xing-long Li Department of Chemical Physics, Lab of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China  
Quan-xin Li* Department of Chemical Physics, Lab of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China liqx@ustc.edu.cn 
Abstract:
We provides a novel approach to generate low-temperature atomic oxygen anions (O-) emis-sion using the cesium oxide-doped 12CaO·7Al2O3 (Cs2O-doped C12A7). The maximal emis-sion intensity of O- from the Cs2O-doped C12A7 at 700 oC and 800 V/cm reached about 0.54 μA/cm2, which was about two times as strong as that from the un-doped C12A7(0.23 μA/cm2) under the same condition. The initiative temperature of the O- emission from the Cs2O-doped C12A7 was about 500 oC, which was also much lower than the initiative temperature from the un-doped C12A7 (570 oC) in the given field of 800 V/cm. High pure O- emission close to 100% could be obtained from the Cs2O-doped C12A7 under the lower temperature (<550oC). The emission features of the Cs2-doped C12A7, including the emis-sion distribution, temperature effect, and emission branching ratio have been investigated in detail and compared with the un-doped C12A7. The structure and storage characteristics of the resulting material were also investigated via X-ray diffraction and electron paramag-netic resonance. It was found that doping Cs2 to C12A7 will lower the initiative emission temperature and enhance the emission intensity.
Key words:  Atomic oxygen anion, Cs2O-doped C12A7, Emission characteristics, Storage characteristics
FundProject:
掺杂Cs2O的12CaO·7Al2O3型发射材料的制备与特性
宁珅,沈静,李兴龙,李全新*
摘要:
研究了掺杂Cs2O的12CaO·7Al2O3(C12A7)型负离子存储发射材料的发射特性、离子发射分支比以及温度对发射强度的影响,同时对该材料的X射线衍射和电子顺磁共振的表征结果进行了分析. C12A7中Cs2O的掺入不仅降低了发射温度,同时还增强了发射强度. 掺杂Cs2O后,在800 V/cm的引出场下,发射温度由570 oC降低至500 oC,在700 oC时,发射强度由0.23 μA/cm<
关键词:  氧负离子,Cs2O掺杂,C12A7,存储特性,发射特性
DOI:10.1088/1674-0068/24/03/335-339
分类号: