Hashem, Ahmed M. ; Abdel-Latif, A. M. ; Abuzeid, Hanaa M. ; Abbas, H. M. ; Ehrenberg, Helmut ; Farag, R. S. ; Mauger, A. ; Julien, C. M. (2011)
Improvement of the electrochemical performance of nanosized α-MnO2 used as cathode material for Li-batteries by Sn-doping.
In: Journal of Alloys and Compounds, 509 (40)
doi: 10.1016/j.jallcom.2011.07.075
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Sn-doped MnO2 was prepared by hydrothermal reaction between KMnO4 as oxidant, fumaric acid C4H4O4 as reductant and SnCl2 as doping agent. XRD analysis indicates the cryptomelane α-MnO2 crystal structure for pure and doped samples. Thermal stabilization was observed for both oxides as detected from thermogravimetric analysis. SEM and TEM images show changes in the morphology of the materials from spherical-like particles for pristine P–MnO2 to rod-like structure for Sn–MnO2. Electrochemical properties of the electrode materials have been tested in lithium cells. Improvement in capacity retention and cycling ability is observed for doped oxide at the expense of initial capacity. After 35 cycles, the Li//Sn doped MnO2 cell display lower capacity loss.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Hashem, Ahmed M. ; Abdel-Latif, A. M. ; Abuzeid, Hanaa M. ; Abbas, H. M. ; Ehrenberg, Helmut ; Farag, R. S. ; Mauger, A. ; Julien, C. M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Improvement of the electrochemical performance of nanosized α-MnO2 used as cathode material for Li-batteries by Sn-doping |
| Sprache: | Englisch |
| Publikationsjahr: | 6 Oktober 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Alloys and Compounds |
| Jahrgang/Volume einer Zeitschrift: | 509 |
| (Heft-)Nummer: | 40 |
| DOI: | 10.1016/j.jallcom.2011.07.075 |
| Kurzbeschreibung (Abstract): | Sn-doped MnO2 was prepared by hydrothermal reaction between KMnO4 as oxidant, fumaric acid C4H4O4 as reductant and SnCl2 as doping agent. XRD analysis indicates the cryptomelane α-MnO2 crystal structure for pure and doped samples. Thermal stabilization was observed for both oxides as detected from thermogravimetric analysis. SEM and TEM images show changes in the morphology of the materials from spherical-like particles for pristine P–MnO2 to rod-like structure for Sn–MnO2. Electrochemical properties of the electrode materials have been tested in lithium cells. Improvement in capacity retention and cycling ability is observed for doped oxide at the expense of initial capacity. After 35 cycles, the Li//Sn doped MnO2 cell display lower capacity loss. |
| Freie Schlagworte: | Lithium ion batteries; Manganese dioxide; Tin doping; Cryptomelane |
| 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 Sep 2011 14:13 |
| Letzte Änderung: | 05 Mär 2013 09:54 |
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