Gross, Toni ; Hess, Christian (2014)
Spatially-Resolved In Situ Raman Analysis of LiCoO2 Electrodes.
In: ECS transactions, 63 (1)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The potential of Raman diagnostics for spatially-resolved in situ diagnostics of LiCoO2 electrodes for lithium-ion batteries is demonstrated. In situ Raman spectra of LiCoO2 composite electrodes are characterized by LiCoO2 phonon bands as well as carbon- and electrolyte-related features. Spatially-resolved Raman analysis, i.e. Raman mapping prior electrochemical cycling reveals a variation of chemical composition across the electrode surface. Comparison of in situ spectra prior and after electrochemical cycling shows a spatially-dependent redistribution of composition as derived from changes in the LiCoO2-carbon peak ratios. The results of the in situ mapping experiments are dicussed in the context of degradation of lithium-ion batteries.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Gross, Toni ; Hess, Christian |
| Art des Eintrags: | Bibliographie |
| Titel: | Spatially-Resolved In Situ Raman Analysis of LiCoO2 Electrodes |
| Sprache: | Englisch |
| Publikationsjahr: | 2014 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ECS transactions |
| Jahrgang/Volume einer Zeitschrift: | 63 |
| (Heft-)Nummer: | 1 |
| Buchtitel: | Characterization of Interfaces and Interphases |
| Reihe: | ECS Transactions |
| URL / URN: | http://dx.doi.org/10.1149/06112.0001ecst |
| Kurzbeschreibung (Abstract): | The potential of Raman diagnostics for spatially-resolved in situ diagnostics of LiCoO2 electrodes for lithium-ion batteries is demonstrated. In situ Raman spectra of LiCoO2 composite electrodes are characterized by LiCoO2 phonon bands as well as carbon- and electrolyte-related features. Spatially-resolved Raman analysis, i.e. Raman mapping prior electrochemical cycling reveals a variation of chemical composition across the electrode surface. Comparison of in situ spectra prior and after electrochemical cycling shows a spatially-dependent redistribution of composition as derived from changes in the LiCoO2-carbon peak ratios. The results of the in situ mapping experiments are dicussed in the context of degradation of lithium-ion batteries. |
| Zusätzliche Informationen: | SFB 595 B8 |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung > Teilprojekt B8: In situ Diagnostik von Interkalationsbatterien mittels Ramanspektroskopie Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 07 Aug 2014 13:19 |
| Letzte Änderung: | 16 Mär 2015 16:16 |
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