Ehrenberg, Helmut and Nikolowski, Kristian and Bramnik, Natalia N. and Baehtz, Carsten and Buhrmester, Thorsten and Gross, Toni André (2005):
Conditioning of Li(Ni,Co)O2 Cathode Materials for Rechargeable Batteries During the First Charge-Discharge Cycles.
In: Advanced Engineering Materials, pp. 932-935, 7, (10), ISSN 1438-1656, [Online-Edition: http://dx.doi.org/10.1002/adem.200500116],
[Article]
Abstract
As-prepared Li(Ni,Co)O2 with good electrochemical performance is an insulator with low degree of cation disorder, i.e. Li and (Ni,Co) are distributed on different and alternating layers. Lithium extraction in the first cycle induces an irreversible first-order phase transition into a metallic phase with a discontinuous change in the c/a ratio by 3.6% and an accompanied partial occupation of some of the vacant Li-sites by Ni-ions. The specific arrangement of those Ni-ions on Li-layers is proposed as a key feature for the good cycling behaviour of Li(Ni,Co)O2 based cathodes in rechargeable batteries.
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Ehrenberg, Helmut and Nikolowski, Kristian and Bramnik, Natalia N. and Baehtz, Carsten and Buhrmester, Thorsten and Gross, Toni André |
| Title: | Conditioning of Li(Ni,Co)O2 Cathode Materials for Rechargeable Batteries During the First Charge-Discharge Cycles |
| Language: | English |
| Abstract: | As-prepared Li(Ni,Co)O2 with good electrochemical performance is an insulator with low degree of cation disorder, i.e. Li and (Ni,Co) are distributed on different and alternating layers. Lithium extraction in the first cycle induces an irreversible first-order phase transition into a metallic phase with a discontinuous change in the c/a ratio by 3.6% and an accompanied partial occupation of some of the vacant Li-sites by Ni-ions. The specific arrangement of those Ni-ions on Li-layers is proposed as a key feature for the good cycling behaviour of Li(Ni,Co)O2 based cathodes in rechargeable batteries. |
| Journal or Publication Title: | Advanced Engineering Materials |
| Volume: | 7 |
| Number: | 10 |
| Uncontrolled Keywords: | Battery materials; Cathode materials ; Synchrotron 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 10:53 |
| Official URL: | http://dx.doi.org/10.1002/adem.200500116 |
| Additional Information: | SFB 595 B4 |
| Identification Number: | doi:10.1002/adem.200500116 |
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