Sodium Ion Mobility in NaxCoO2 (0.6 < x < 0.75) Cobaltites Studied by 23Na MAS NMR

被引：41

作者：

Carlier, Dany ^{[1
]}

Blangero, Maxime ^{[1
]}

Menetrier, Michel ^{[1
]}

Pollet, Michael ^{[1
]}

Doumerc, Jean-Pierre ^{[1
]}

Delmas, Claude ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS, ICMCB, F-33608 Pessac, France

来源：

INORGANIC CHEMISTRY | 2009年 / 48卷 / 15期

关键词：

INTEGER QUADRUPOLAR NUCLEI; CENTRAL TRANSITION; CRYSTAL-STRUCTURE; MOTION; CO-59;

D O I：

10.1021/ic900026c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Various P2 and P'3-NaxCoO2 phases, with x ranging approximately from 0.6 to 0.75, have been studied by variable-temperature Na-23 magic angle spinning (MAS) NMR. Signal modification versus temperature plots clearly show that Na+ ions are not totally mobile at room temperature on the NMR time scale. As the temperature increases, the line shape change of the Na-23 MAS NMR signal differs for the P2 and P'3 stackings and is interpreted by the differences of Na+ ion sites and of sodium diffusion pathways in the two structures.

引用

页码：7018 / 7025

页数：8

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Sodium Ion Mobility in NaxCoO2 (0.6 &lt; x &lt; 0.75) Cobaltites Studied by 23Na MAS NMR

Sodium Ion Mobility in NaxCoO2 (0.6 < x < 0.75) Cobaltites Studied by 23Na MAS NMR