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Lithium trapping in alloy forming electrodes and current collectors for lithium based batteries
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2017 (English)In: Energy & Environmental Science, ISSN 1754-5692, E-ISSN 1754-5706, Vol. 10, no 6, 1350-1357 p.Article in journal (Refereed) Published
Abstract [en]

Significant capacity losses are generally seen for batteries containing high-capacity lithium alloy forming anode materials such as silicon, tin and aluminium. These losses are generally ascribed to a combination of volume expansion effects and irreversible electrolyte reduction reactions. Here, it is shown, based on e.g. elemental analyses of cycled electrodes, that the capacity losses for tin nanorod and silicon composite electrodes in fact involve diffusion controlled trapping of lithium in the electrodes. While an analogous effect is also demonstrated for copper, nickel and titanium current collectors, boron-doped diamond is shown to function as an effective lithium diffusion barrier. The present findings indicate that the durability of lithium based batteries can be improved significantly via proper electrode design or regeneration of the used electrodes. © The Royal Society of Chemistry 2017.

Place, publisher, year, edition, pages
2017. Vol. 10, no 6, 1350-1357 p.
National Category
Materials Engineering
Research subject
Steel Forming and Surface Engineering
Identifiers
URN: urn:nbn:se:du-25634DOI: 10.1039/c7ee00244kISI: 000403320300006Scopus ID: 2-s2.0-85021990496OAI: oai:DiVA.org:du-25634DiVA: diva2:1128348
Funder
Swedish Energy AgencySwedish Research Council, 2012-4681Swedish Research Council, 2015-04421
Available from: 2017-07-25 Created: 2017-07-25 Last updated: 2017-07-31Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf