Abuzeid, Hanaa M. ; Hashem, Ahmed M. ; Narayanan, N. ; Ehrenberg, Helmut ; Julien, C. M. (2011)
Nanosized silver-coated and doped manganese dioxide for rechargeable lithium batteries.
In: Solid State Ionics, 182 (1)
doi: 10.1016/j.ssi.20https://doi.org/10.11.023
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Nanosized pure, Ag-coated and doped manganese dioxides (MDO) were prepared through a redox reaction between KMnO4 and fumaric acid. XRD analysis showed cryptomelane crystal structure for pure, coated and doped α-phases. Chemical analysis detected the presence of silver in doped and coated MDO. Scanning electron microscope (SEM) and energy-dispersive spectroscopy (EDS) analyses confirmed the presence of silver in doped and coated oxides. Transmission electron microscope (TEM) images confirmed the nanosized particles of the prepared oxides. Magnetic measurements showed reduction in Mn3+ ions in the crystal structure after coating and doping with silver. The electrochemical performance showed that Ag-coated and doped MnO2 samples have better initial capacities than pristine MnO2. Ag-coated MnO2 material showed the best capacity retention upon cycling among all prepared MnO2 oxides, i.e. 140 mAh/g after the 40th cycle at C/5 rate in the potential window 1.5–4.0 V vs. Li/Li+.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Abuzeid, Hanaa M. ; Hashem, Ahmed M. ; Narayanan, N. ; Ehrenberg, Helmut ; Julien, C. M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Nanosized silver-coated and doped manganese dioxide for rechargeable lithium batteries |
| Sprache: | Englisch |
| Publikationsjahr: | 3 Februar 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Solid State Ionics |
| Jahrgang/Volume einer Zeitschrift: | 182 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1016/j.ssi.20https://doi.org/10.11.023 |
| Kurzbeschreibung (Abstract): | Nanosized pure, Ag-coated and doped manganese dioxides (MDO) were prepared through a redox reaction between KMnO4 and fumaric acid. XRD analysis showed cryptomelane crystal structure for pure, coated and doped α-phases. Chemical analysis detected the presence of silver in doped and coated MDO. Scanning electron microscope (SEM) and energy-dispersive spectroscopy (EDS) analyses confirmed the presence of silver in doped and coated oxides. Transmission electron microscope (TEM) images confirmed the nanosized particles of the prepared oxides. Magnetic measurements showed reduction in Mn3+ ions in the crystal structure after coating and doping with silver. The electrochemical performance showed that Ag-coated and doped MnO2 samples have better initial capacities than pristine MnO2. Ag-coated MnO2 material showed the best capacity retention upon cycling among all prepared MnO2 oxides, i.e. 140 mAh/g after the 40th cycle at C/5 rate in the potential window 1.5–4.0 V vs. Li/Li+. |
| Freie Schlagworte: | MnO2; Ag; Cathode; Lithium batteries |
| 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 14:16 |
| Letzte Änderung: | 05 Mär 2013 09:54 |
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