4.5 Article

7Li NMR and two-dimensional exchange study of lithium dynamics in monoclinic Li3V2(PO4)3

期刊

JOURNAL OF PHYSICAL CHEMISTRY B
卷 110, 期 14, 页码 7171-7177

出版社

AMER CHEMICAL SOC
DOI: 10.1021/jp057015+

关键词

-

向作者/读者索取更多资源

High-resolution solid-state Li-7 NMR was used to characterize the structure and dynamics of lithium ion transport in monoclinic Li3V2(PO4)(3). Under fast magic-angle spinning (MAS) conditions (25 kHz), three resonances are clearly resolved and assi ned to the three unique crystallographic sites. This assignment is based on the Fermi-contact delocalization interaction between the unpaired d-electrons at the vanadium centers and the lithium ions. One-dimensional variable-temperature NMR and two-dimensional exchange spectroscopy (EXSY) are used to probe Li mobility between the three sites. Very fast exchange, on the microsecond time scale, was observed for the Li hopping processes. Activation energies are determined and correlated to structural properties including interatomic Li distances and Li-O bottleneck sizes.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据