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Design and performance of an electrochemical in-situ cell for high resolution full-pattern X-ray powder diffraction

Baehtz, Carsten and Buhrmester, Thorsten and Bramnik, Natalia N. and Nikolowski, Kristian and Ehrenberg, Helmut (2005):
Design and performance of an electrochemical in-situ cell for high resolution full-pattern X-ray powder diffraction.
In: Solid State Ionics, pp. 1647-1652, 176, (17-18), ISSN 01672738, [Online-Edition: http://dx.doi.org/10.1016/j.ssi.2005.03.021],
[Article]

Abstract

An electrochemical in-situ cell for diffraction studies of battery materials has been developed. The cell works in transmission geometry with sample rotation, and the performance was characterized by experiments on the cathode material LiMn2O4. Several charge and discharge cycles can be studied over a few days without any misfunction of the cell. The quality of the obtained data allows for full structure refinements by the Rietveld method. The whole set-up is about 1 mm thin and consists of an aluminum piston as cathode current collector with a thickness below 0.1 mm in direct contact with a pellet of active cathode material, carbon black and binder. The lithium anode is separated from the cathode by a glass-fibre, soaked with electrolyte. The very good time and angular resolution of this set-up reveals three distinct spinel phases for different charging states of LiMn2O4, prepared by subsolidus reaction.

Item Type: Article
Erschienen: 2005
Creators: Baehtz, Carsten and Buhrmester, Thorsten and Bramnik, Natalia N. and Nikolowski, Kristian and Ehrenberg, Helmut
Title: Design and performance of an electrochemical in-situ cell for high resolution full-pattern X-ray powder diffraction
Language: English
Abstract:

An electrochemical in-situ cell for diffraction studies of battery materials has been developed. The cell works in transmission geometry with sample rotation, and the performance was characterized by experiments on the cathode material LiMn2O4. Several charge and discharge cycles can be studied over a few days without any misfunction of the cell. The quality of the obtained data allows for full structure refinements by the Rietveld method. The whole set-up is about 1 mm thin and consists of an aluminum piston as cathode current collector with a thickness below 0.1 mm in direct contact with a pellet of active cathode material, carbon black and binder. The lithium anode is separated from the cathode by a glass-fibre, soaked with electrolyte. The very good time and angular resolution of this set-up reveals three distinct spinel phases for different charging states of LiMn2O4, prepared by subsolidus reaction.

Journal or Publication Title: Solid State Ionics
Volume: 176
Number: 17-18
Uncontrolled Keywords: LiMn2O4; Rechargable batteries; Battery materials; Electrode materials; Electrochemical in-situ sell; Synchrotron powder diffraction
Divisions: 11 Department of Materials and Earth Sciences
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
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 > B - Characterisation > Subproject B4: In situ investigations of the degradation of intercalation batteries and their modelling
Date Deposited: 15 Aug 2011 11:00
Official URL: http://dx.doi.org/10.1016/j.ssi.2005.03.021
Additional Information:

SFB 595 B4

Identification Number: doi:10.1016/j.ssi.2005.03.021
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