Dimesso, Lucangelo ; Spanheimer, Christina ; Jaegermann, Wolfram (2014)
Influence of the annealing atmosphere on the properties of LiCoPO4–graphitic carbon foams composites.
In: Ionics, 20 (5)
doi: 10.1007/s11581-013-1025-8
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The investigation on the properties of LiCoPO4–graphitic carbon foams (LCP-GCF) composites is reported in this work. The diffraction analysis (XRD) on powders confirmed the presence of LiCoPO4 as major crystalline phase and Li4P2O7 and Co2P as secondary phases. The morphological investigation of the composites shows a layer of crystalline spongy-like material on the surface of the GCF for t = 0 h and of acicular crystallites with different dimensions (5–50 μm) for t ≥ 0.1 h. The voltammetric curves (cyclic voltammogramms) show mean values of reduction potential above 5.0 V independently of the annealing time. The LCP-GCF composites deliver a discharge-specific capacity of 76mAh g−1 (t = 0 h) and of 102mAh g−1 (t = 0.1 h) at a discharge rate of C/10 and room temperature. The electrochemical impedance spectroscopy data reveal a decrease of the electrical resistance and the improvement of the Li-ion conductivity as a function of the annealing time.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Dimesso, Lucangelo ; Spanheimer, Christina ; Jaegermann, Wolfram |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of the annealing atmosphere on the properties of LiCoPO4–graphitic carbon foams composites |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Mai 2014 |
| Verlag: | Springer Berlin Heidelberg |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Ionics |
| Jahrgang/Volume einer Zeitschrift: | 20 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1007/s11581-013-1025-8 |
| Kurzbeschreibung (Abstract): | The investigation on the properties of LiCoPO4–graphitic carbon foams (LCP-GCF) composites is reported in this work. The diffraction analysis (XRD) on powders confirmed the presence of LiCoPO4 as major crystalline phase and Li4P2O7 and Co2P as secondary phases. The morphological investigation of the composites shows a layer of crystalline spongy-like material on the surface of the GCF for t = 0 h and of acicular crystallites with different dimensions (5–50 μm) for t ≥ 0.1 h. The voltammetric curves (cyclic voltammogramms) show mean values of reduction potential above 5.0 V independently of the annealing time. The LCP-GCF composites deliver a discharge-specific capacity of 76mAh g−1 (t = 0 h) and of 102mAh g−1 (t = 0.1 h) at a discharge rate of C/10 and room temperature. The electrochemical impedance spectroscopy data reveal a decrease of the electrical resistance and the improvement of the Li-ion conductivity as a function of the annealing time. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 27 Feb 2015 12:21 |
| Letzte Änderung: | 29 Mär 2015 16:54 |
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