检索结果-南通市图书馆

Charge density wave transition in Na_2Ti_2Sb_2O probed by^(23)Na NMR

Science China(Physics,Mechanics & Astronomy) 2013年第12期56卷 2399-2403页

作者： FAN GuoZhi ZHANG Xu SHI YouGuo LUO JianLin Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences

Herein we investigated the electronic properties of layered transition-metal oxides NazTi2Sb2O by 23Na nuclear magnetic reso- nance （NMR） measurement. The resistivity, susceptibility and specific heat measurements show a phase transition at approxi- mately 114 K （TA）. No splitting or broadening in the central line of 23Na NMR spectra is observed below and above the transi- tion temperature indicating no internal field being detected. The spin-lattice relaxation rate divided by T （I/T1T） shows a sharp drop at about 110 K which suggests a gap opening behavior. Below the phase transition temperature zone, I/T1T shows Fermi liquid behavior but with much smaller value indicating the loss of large part of electronic density of states （DOS） because of the gap. No signature of the enhancement of spin fluctuations or magnetic order is found with the decreasing temperature. These results suggest a commensurate charge-density-wave （CDW） phase transition occurring.

关键词： layered transition-metal oxides charge-density-waves NMR

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advanced nanoengineering strategies endow highperformance layered transition-metal oxide cathodes for sodium-ion batteries

引用

SmartMat 2023年第5期4卷 30-56页

作者： Jun Xiao Yang Xiao Jiayi Li Cheng Gong Xinming Nie Hong Gao Bing Sun Hao Liu Guoxiu Wang Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghaiChina Centre for Clean Energy Technology School of Mathematial and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNew South WalesAustralia school of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhouJiangsuChina

Considering the abundance and low price of sodium,sodium-ion batteries(SIBs)have shown great potential as an alternative to existing lithium-based batteries in large-scale energy storage systems,including electric automobiles and smart *** materials,which largely decide the cost and the electrochemical performance of the full SIBs,have been extensively *** the reported cathodes,layered transition-metal oxides(LTMOs)are regarded as the most extremely promising candidates for the commercial application of the SIBs owing to their high specific capacity,superior redox potential,and suitable scalable ***,irreversible structural evolution,sluggish kinetics,and water sensitivity are still the critical bottlenecks for their practical *** may offer an opportunity to address the above issues by increasing reactivity,shortening diffusion pathways,and strengthening structural ***,a comprehensive summary of the modification strategies for LTMOs is presented,emphasizing optimizing the structure,restraining detrimental phase transition,and promoting diffusion *** review intends to facilitate an in-depth understanding of structure-composition-property correlation and offer guidance to the further development of the LTMO cathodes for next-generation energy storage systems.

关键词： cathode materials layered transition-metal oxides modification strategies sodium-ion batteries

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：