期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 16, 期 6, 页码 2515-2526出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp55132f
关键词
-
资金
- National Sciences and Engineering Research Council of Canada (NSERC)
Garnet-like solid-state electrolyte materials for lithium ion batteries are promising replacements for the currently-used liquid electrolytes. This work compares the temperature dependent Li+ ion hopping rate in Li6BaLa2M2O12 (M = Ta, Nb) using solid-state Li-6{Li-7}-REDOR NMR. The slope of the Li-6{Li-7}-REDOR curve is highly temperature dependent in these two phases, and a comparison of the changes of the REDOR slopes as a function of temperature has been used to evaluate the Li+ ion dynamics. Our results indicate that the Nb phase has a higher overall ionic conductivity in the range of 247 K to 350 K, as well as a higher activation energy for lithium ion hopping than the Ta counterpart. For appropriate relative timescales of the dipolar couplings and ion transport processes, this is shown to be a facile method to compare ion dynamics among similar structures.
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。
推荐
暂无数据