Wei, Y. J. ; Nikolowski, Kristian ; Zhang, Shan-Tao ; Ehrenberg, Helmut ; Oswald, S. ; Chen, G. ; Wang, C. Z. ; Chen, H. (2009)
Electrochemical kinetics and cycling performance of nano Li[Li0.23Co0.3Mn0.47]O2 cathode material for lithium ion batteries.
In: Electrochemistry Communications, 11 (10)
doi: 10.1016/j.elecom.2009.08.040
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Li[Li0.23Co0.3Mn0.47]O2 cathode material was prepared by a sol–gel method. The material had a primary particle size of about 100 nm, covered by a 30 Å of Li2CO3 layer. The material showed promising electrochemical performance when cycled up to 3C rate. The electrochemical kinetics of the first charge was much slower than that of the second charge, due to the complex electrochemical process which involved not only Li+ diffusion but also release of oxygen. By taking account of this, the material was pre-charged very slowly (not, vert, similarC/50) in the first cycle. This led to excellent electrochemical performance in the following cycles. For instance, the 1C-rate capacity increased to 168 mA h g−1 after 50 cycles, comparing with the 145 mA h g−1 obtained without pre-charging.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Wei, Y. J. ; Nikolowski, Kristian ; Zhang, Shan-Tao ; Ehrenberg, Helmut ; Oswald, S. ; Chen, G. ; Wang, C. Z. ; Chen, H. |
| Art des Eintrags: | Bibliographie |
| Titel: | Electrochemical kinetics and cycling performance of nano Li[Li0.23Co0.3Mn0.47]O2 cathode material for lithium ion batteries |
| Sprache: | Englisch |
| Publikationsjahr: | Oktober 2009 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Electrochemistry Communications |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1016/j.elecom.2009.08.040 |
| Kurzbeschreibung (Abstract): | Li[Li0.23Co0.3Mn0.47]O2 cathode material was prepared by a sol–gel method. The material had a primary particle size of about 100 nm, covered by a 30 Å of Li2CO3 layer. The material showed promising electrochemical performance when cycled up to 3C rate. The electrochemical kinetics of the first charge was much slower than that of the second charge, due to the complex electrochemical process which involved not only Li+ diffusion but also release of oxygen. By taking account of this, the material was pre-charged very slowly (not, vert, similarC/50) in the first cycle. This led to excellent electrochemical performance in the following cycles. For instance, the 1C-rate capacity increased to 168 mA h g−1 after 50 cycles, comparing with the 145 mA h g−1 obtained without pre-charging. |
| Freie Schlagworte: | Lithium ion battery; Cathode material; Nano material; Electrochemical kinetics; Cycling performance |
| Zusätzliche Informationen: | SFB 595 B4 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung > Teilprojekt B4: In situ Untersuchungen der Degradation von Interkalationsbatterien und deren Modellierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 15 Aug 2011 09:41 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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