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Structure–intercalation relationships in LiNiCoO

Gross, Toni André and Buhrmester, Thorsten and Bramnik, Kirill G. and Bramnik, Natalia N. and Nikolowski, Kristian and Baehtz, Carsten and Ehrenberg, Helmut and Fuess, Hartmut (2005):
Structure–intercalation relationships in LiNiCoO.
In: Solid State Ionics, pp. 1193-1199, 176, (13-14), ISSN 01672738, [Online-Edition: http://dx.doi.org/10.1016/j.ssi.2005.02.008],
[Article]

Abstract

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 °C for y = 0.75, between 750 and 810 °C for y = 0.66 and a less pronounced minimum between 795 and 870 °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.

Item Type: Article
Erschienen: 2005
Creators: Gross, Toni André and Buhrmester, Thorsten and Bramnik, Kirill G. and Bramnik, Natalia N. and Nikolowski, Kristian and Baehtz, Carsten and Ehrenberg, Helmut and Fuess, Hartmut
Title: Structure–intercalation relationships in LiNiCoO
Language: English
Abstract:

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 °C for y = 0.75, between 750 and 810 °C for y = 0.66 and a less pronounced minimum between 795 and 870 °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.

Journal or Publication Title: Solid State Ionics
Volume: 176
Number: 13-14
Uncontrolled Keywords: LiCoO2; LiNiO2; Li-ion battery; In-situ characterisation
Divisions: DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B3: Structure Characterization of Piezoelectric Ceramics With Respect to Electrical Fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B4: In situ investigations of the degradation of intercalation batteries and their modelling
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 10 Aug 2011 11:50
Official URL: http://dx.doi.org/10.1016/j.ssi.2005.02.008
Additional Information:

SFB 595 Cooperation B3, B4

Identification Number: doi:10.1016/j.ssi.2005.02.008
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