Structure-intercalation relationships in LiNiyCo1-yO2

被引：20

作者：

Gross, T ^{[1
]}

Buhrmester, T ^{[1
]}

Bramnik, KG ^{[1
]}

Bramnik, NN ^{[1
]}

Nikolowski, K ^{[1
]}

Baehtz, C ^{[1
]}

Ehrenberg, H ^{[1
]}

Fuess, H ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 13-14期

关键词：

LiCoO2; LiNiO2; Li-ion battery; in-situ characterisation;

D O I：

10.1016/j.ssi.2005.02.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of the annealing temperature on the degree of cation-disordering in the layered structures was examined for three different compositions of LiNiyCo1-yO2, (y = 0.2, 0.66 and 0.75, respectively). A minimum in cation-disorder is found for annealing temperatures between 700 and 800 degrees C for y = 0.75, between 750 and 810 degrees C for y = 0.66 and a less pronounced minimum between 795 and 870 degrees C for y = 0.2. One optimum annealed sample with y = 0.75 was used for an in situ characterisation using synchrotron radiation. The obtained structural data correlate well with the electrochemical data. The known phase transition occurring during the first cycle was closely observed by ADXRD (angular dispersive X-ray diffraction). The two states of the material during the first cycle could be distinguished and the obtained data were processed by Rietveld refinement. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：1193 / 1199

页数：7

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