Dimesso, L. ; Spanheimer, C. ; Jaegermann, W. ; Zhang, Y. ; Yarin, A. L. (2012)
LiFePO4 – 3D carbon nanofiber composites as cathode materials for Li-ions batteries.
In: Journal of Applied Physics, 111 (6)
doi: 10.1063/1.3693575
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The characterization of carbon nanofiber 3D nonwovens, prepared by electrospinning process, coated with olivine structured lithium iron phosphate is reported. The LiFePO4 as cathode material for lithium ion batteries was prepared by a Pechini-assisted reversed polyol process. The coating has been successfully performed on carbon nanofiber 3D nonwovens by soaking in aqueous solution containing lithium, iron salts and phosphates at 70 degrees C for 2-4 h. After drying-out, the composites were annealed at 600 degrees C for 5 h under nitrogen. The surface investigation of the prepared composites showed a uniform coating of the carbon nonwoven nanofibers as well as the formation of cauliflower-like crystalline structures which are uniformly distributed all over the surface area of the carbon nanofibers. The electrochemical measurements on the composites showed good performances delivering a discharge specific capacity of 156 mAhg(-1) at a discharging rate of C/25 and 152 mAhg(-1) at a discharging rate of C/10 at room temperature.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Dimesso, L. ; Spanheimer, C. ; Jaegermann, W. ; Zhang, Y. ; Yarin, A. L. |
| Art des Eintrags: | Bibliographie |
| Titel: | LiFePO4 – 3D carbon nanofiber composites as cathode materials for Li-ions batteries |
| Sprache: | Englisch |
| Publikationsjahr: | 15 März 2012 |
| Verlag: | American Institute of Physics Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 111 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1063/1.3693575 |
| Kurzbeschreibung (Abstract): | The characterization of carbon nanofiber 3D nonwovens, prepared by electrospinning process, coated with olivine structured lithium iron phosphate is reported. The LiFePO4 as cathode material for lithium ion batteries was prepared by a Pechini-assisted reversed polyol process. The coating has been successfully performed on carbon nanofiber 3D nonwovens by soaking in aqueous solution containing lithium, iron salts and phosphates at 70 degrees C for 2-4 h. After drying-out, the composites were annealed at 600 degrees C for 5 h under nitrogen. The surface investigation of the prepared composites showed a uniform coating of the carbon nonwoven nanofibers as well as the formation of cauliflower-like crystalline structures which are uniformly distributed all over the surface area of the carbon nanofibers. The electrochemical measurements on the composites showed good performances delivering a discharge specific capacity of 156 mAhg(-1) at a discharging rate of C/25 and 152 mAhg(-1) at a discharging rate of C/10 at room temperature. |
| Freie Schlagworte: | Carbon, Lithium, Annealing, Electrodeposition, Composite Materials, Crystal structure, Electrochemistry, Electrodes, Lithium ion batteries, Surface structure |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung Zentrale Einrichtungen Exzellenzinitiative > Exzellenzcluster > Center of Smart Interfaces (CSI) Exzellenzinitiative Exzellenzinitiative > Exzellenzcluster |
| Hinterlegungsdatum: | 26 Nov 2013 09:51 |
| Letzte Änderung: | 26 Mär 2015 20:39 |
| PPN: | |
| Sponsoren: | The authors thank the Deutsche Forschungsgemeinschaft (DFG) (Project: PAK-177) and the Excellency Cluster Center of Smart Interfaces (CSI) for the financial support during this work. , The DFG promote and support financially the publication of the scientific results obtained during the projects., YZ and ALY are also grateful for the partial support of their work by National Science Foundation through the Grant CBET-0966764. |
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