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On the formation of lithium oxides and carbonates on Li metal electrodes in comparison to LiCoO2 surface phases investigated by photoelectron spectroscopy

Ensling, David and Thissen, Andreas and Jaegermann, Wolfram (2008):
On the formation of lithium oxides and carbonates on Li metal electrodes in comparison to LiCoO2 surface phases investigated by photoelectron spectroscopy.
In: Applied Surface Science, pp. 2517-2523, 255, (5), ISSN 01694332,
[Online-Edition: http://dx.doi.org/10.1016/j.apsusc.2008.07.196],
[Article]

Abstract

The study delivers detailed information about different lithium phases contributing to the complex surface chemistry of active electrodes in lithium ion batteries. Photoemission spectroscopy has been used to investigate the oxidation of metallic lithium as well as the reaction with air. From XP and UP valence band spectra characteristic emissions have been separated in order to help identifying lithium containing surface phases on intercalation electrodes. Characteristic spectral shapes of Li2CO3, Li2O2, Li2O and LiOH compounds are presented. The spectral features of a reacted lithium surface are compared to carbonate emissions on a LiCoO2 thin film cathode.

Item Type: Article
Erschienen: 2008
Creators: Ensling, David and Thissen, Andreas and Jaegermann, Wolfram
Title: On the formation of lithium oxides and carbonates on Li metal electrodes in comparison to LiCoO2 surface phases investigated by photoelectron spectroscopy
Language: English
Abstract:

The study delivers detailed information about different lithium phases contributing to the complex surface chemistry of active electrodes in lithium ion batteries. Photoemission spectroscopy has been used to investigate the oxidation of metallic lithium as well as the reaction with air. From XP and UP valence band spectra characteristic emissions have been separated in order to help identifying lithium containing surface phases on intercalation electrodes. Characteristic spectral shapes of Li2CO3, Li2O2, Li2O and LiOH compounds are presented. The spectral features of a reacted lithium surface are compared to carbonate emissions on a LiCoO2 thin film cathode.

Journal or Publication Title: Applied Surface Science
Volume: 255
Number: 5
Uncontrolled Keywords: Photoelectron spectroscopy; Lithium ion battery; XPS; UPS; LiCoO2; Li2O; Li2O2; Oxide; Li2CO3; LiOH; Surface; Reference; Oxidation; Valence band; Interface
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Surface Science
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A3: Boundary layers and thin films of ionic conductors: Electronic structure, electrochemical potentials, defect formation and degradation mechanisms
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 04 Aug 2011 08:17
Official URL: http://dx.doi.org/10.1016/j.apsusc.2008.07.196
Additional Information:

SFB 595 A3

Identification Number: doi:10.1016/j.apsusc.2008.07.196
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