Journal article
Surface analysis on discharged MnO2 cathode using XPS and SIMS techniques
Surface and Interface Analysis, Vol.41(1), pp.56-60
2009
Abstract
Manganese dioxide (MnO2) appears to be an effective cathode material for a battery system. No studies on lithium insertion in aqueous media are known to the best of our knowledge. However, in one of our previous papers we reported that lithium could be intercalated into a MnO2 host compound using an aqueous LiOH electrolyte; however simple chemistry suggests that it should not. It is found that a battery with LiOH electrolyte functions quite differently from the cell that uses Li2SO4. This paper describes the surface modifications that accompany the electrochemical behavior of MnO2 during redox (discharge) processes in the lithium hydroxide and sulfate media. XPS and SIMS techniques were used to study the resultant surface of the MnO2 cathode and the spectra reveal that the formation of an insoluble layer of Li2CO3 precedes the process of reduction. SEM was used to study the microstructure of the MnO2 cathode.
Details
- Title
- Surface analysis on discharged MnO2 cathode using XPS and SIMS techniques
- Authors/Creators
- M. Minakshi (Author/Creator) - Murdoch UniversityS. Thurgate (Author/Creator) - Macquarie University
- Publication Details
- Surface and Interface Analysis, Vol.41(1), pp.56-60
- Publisher
- John Wiley and Sons
- Identifiers
- 991005543110607891
- Copyright
- 2008 John Wiley & Sons, Ltd.
- Murdoch Affiliation
- School of Chemical and Mathematical Science
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 2 Chemistry
- 2.62 Electrochemistry
- 2.62.138 Lithium-Ion Battery
- Web Of Science research areas
- Chemistry, Physical
- ESI research areas
- Physics