Carrillo Solano, Mercedes Alicia (2016)
Development of artificial surface layers for thin film cathode materials.
Technische Universität Darmstadt
Dissertation, Erstveröffentlichung
Kurzbeschreibung (Abstract)
The present work was based on the investigation of different thin film components of Li ion batteries. A first part was dedicated to the deposition of cathodes in thin film form of a known material, LiCoO2, and an alternative one, Li(NiMnCo)O2 employing physical vapor deposition (PVD) and chemical vapor deposition (CVD), respectively. A second part was focused on the cathode-electrolyte interface for three case studies: 1) as deposited LiCoO2 cathode thin film, 2) ZrO2 coated LiCoO2 thin film and 3) LiPON coated LiCoO2 thin film. The interface cathode-electrolyte of these three cases were studied before and after galvanostatic cycling to determine surface layer characteristics and changes arising on the interface after battery operation. The interface of a bare LiCoO2 layer was further studied after soaking in liquid electrolyte to elucidate the effect of short storage procedures in batteries. Additionally, LiPON thin films were studied on the basis of structural changes occurring with nitrogenation and its correlation to a possible mechanism during ion conduction. Composition of phosphate glasses with rf sputtering was proven to be greatly influenced by the gas ratio employed.
Typ des Eintrags: | Dissertation | ||||||
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Erschienen: | 2016 | ||||||
Autor(en): | Carrillo Solano, Mercedes Alicia | ||||||
Art des Eintrags: | Erstveröffentlichung | ||||||
Titel: | Development of artificial surface layers for thin film cathode materials | ||||||
Sprache: | Englisch | ||||||
Referenten: | Jaegermann, Prof. Dr. Wolfram ; Croguennec, Dr. Laurence | ||||||
Publikationsjahr: | 2016 | ||||||
Ort: | Darmstadt | ||||||
Datum der mündlichen Prüfung: | 30 Oktober 2015 | ||||||
URL / URN: | http://tuprints.ulb.tu-darmstadt.de/5246 | ||||||
Kurzbeschreibung (Abstract): | The present work was based on the investigation of different thin film components of Li ion batteries. A first part was dedicated to the deposition of cathodes in thin film form of a known material, LiCoO2, and an alternative one, Li(NiMnCo)O2 employing physical vapor deposition (PVD) and chemical vapor deposition (CVD), respectively. A second part was focused on the cathode-electrolyte interface for three case studies: 1) as deposited LiCoO2 cathode thin film, 2) ZrO2 coated LiCoO2 thin film and 3) LiPON coated LiCoO2 thin film. The interface cathode-electrolyte of these three cases were studied before and after galvanostatic cycling to determine surface layer characteristics and changes arising on the interface after battery operation. The interface of a bare LiCoO2 layer was further studied after soaking in liquid electrolyte to elucidate the effect of short storage procedures in batteries. Additionally, LiPON thin films were studied on the basis of structural changes occurring with nitrogenation and its correlation to a possible mechanism during ion conduction. Composition of phosphate glasses with rf sputtering was proven to be greatly influenced by the gas ratio employed. |
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Alternatives oder übersetztes Abstract: |
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Freie Schlagworte: | Li-ion batteries, Thin film cathode, LiCoO2, Artificial surface layer, ZrO2, LiPON | ||||||
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URN: | urn:nbn:de:tuda-tuprints-52460 | ||||||
Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
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Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung |
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Hinterlegungsdatum: | 06 Mär 2016 20:55 | ||||||
Letzte Änderung: | 06 Mär 2016 20:55 | ||||||
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Referenten: | Jaegermann, Prof. Dr. Wolfram ; Croguennec, Dr. Laurence | ||||||
Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 30 Oktober 2015 | ||||||
Schlagworte: |
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