This title appears in the Scientific Report :
2019
Please use the identifier:
http://dx.doi.org/10.1016/j.cplett.2018.12.022 in citations.
In operando EPR investigation of redox mechanisms in LiCoO2
In operando EPR investigation of redox mechanisms in LiCoO2
Electron paramagnetic resonance (EPR) spectroscopy was utilized in operando to analyze redox mechanisms in lithium cobalt oxide (LCO) cathode material during battery cycling. In the pristine battery, a considerable amount of paramagnetic Co2+ was detected that was formed during initial contact of th...
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Personal Name(s): | Niemöller, Arvid (Corresponding author) |
---|---|
Jakes, Peter / Eichel, Rüdiger-A. / Granwehr, Josef | |
Contributing Institute: |
Grundlagen der Elektrochemie; IEK-9 |
Published in: | Chemical physics letters, 716 (2019) S. 231 - 236 |
Imprint: |
Amsterdam [u.a.]
Elsevier
2019
|
DOI: |
10.1016/j.cplett.2018.12.022 |
Document Type: |
Journal Article |
Research Program: |
Electrochemical Storage |
Publikationsportal JuSER |
Electron paramagnetic resonance (EPR) spectroscopy was utilized in operando to analyze redox mechanisms in lithium cobalt oxide (LCO) cathode material during battery cycling. In the pristine battery, a considerable amount of paramagnetic Co2+ was detected that was formed during initial contact of the electrolyte with the LCO. The Co2+ got oxidized during the formation cycle. The absence of an EPR signal during subsequent battery cycles, irrespective of the state-of-charge, indicates that no EPR active Co4+ is formed. This suggests the presence of an anionic oxygen redox mechanism in the active material. |