Saadoune, Ismael ; Labrini, Mohamed ; Yahya, Mustapha ; Almaggoussi, Abdelmajid ; Ehrenberg, Helmut (2010)
LiNi0.1Mn0.1Co0.8O2 electrode material: Structural changes upon lithium electrochemical extraction.
In: Electrochimica Acta, 55 (18)
doi: 10.1016/j.electacta.2010.04.033
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We reported here on the synthesis, the crystal structure and the study of the structural changes during the electrochemical cycling of layered LiNi0.1Mn0.1Co0.8O2 positive electrode material. Rietveld refinement analysis shows that this material exhibits almost an ideal α-NaFeO2 structure with practically no lithium–nickel disorder. The SQUID measurements confirm this structural result and evidenced that this material consists of Ni2+, Mn4+ and Co3+ ions. Unlike LiNiO2 and LiCoO2 conventional electrode materials, there was no structural modification upon lithium removal in the whole 0.42 ≤ x ≤1.0 studied composition range. The peaks revealed in the incremental capacity curve were attributed to the successive oxidation of Ni2+ and Co3+ while Mn4+ remains electrochemically inactive.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Saadoune, Ismael ; Labrini, Mohamed ; Yahya, Mustapha ; Almaggoussi, Abdelmajid ; Ehrenberg, Helmut |
| Art des Eintrags: | Bibliographie |
| Titel: | LiNi0.1Mn0.1Co0.8O2 electrode material: Structural changes upon lithium electrochemical extraction |
| Sprache: | Englisch |
| Publikationsjahr: | Juli 2010 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Electrochimica Acta |
| Jahrgang/Volume einer Zeitschrift: | 55 |
| (Heft-)Nummer: | 18 |
| DOI: | 10.1016/j.electacta.2010.04.033 |
| Kurzbeschreibung (Abstract): | We reported here on the synthesis, the crystal structure and the study of the structural changes during the electrochemical cycling of layered LiNi0.1Mn0.1Co0.8O2 positive electrode material. Rietveld refinement analysis shows that this material exhibits almost an ideal α-NaFeO2 structure with practically no lithium–nickel disorder. The SQUID measurements confirm this structural result and evidenced that this material consists of Ni2+, Mn4+ and Co3+ ions. Unlike LiNiO2 and LiCoO2 conventional electrode materials, there was no structural modification upon lithium removal in the whole 0.42 ≤ x ≤1.0 studied composition range. The peaks revealed in the incremental capacity curve were attributed to the successive oxidation of Ni2+ and Co3+ while Mn4+ remains electrochemically inactive. |
| Freie Schlagworte: | Layered oxides; Electrode material; Lithium extraction; LiNi0.1Mn0.1Co0.8O2; Lithium-ion |
| 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 09:11 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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