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      History effects in lithium-oxygen batteries : how initial seeding influences the discharge capacity

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      Author
      Rinaldi, Ali
      Wijaya, Olivia
      Hoster, Harry E.
      Yu, Denis Y. W.
      Date of Issue
      2014
      Research Centre
      Energy Research Institute
      Abstract
      In laboratory experiments, Li–O2 systems show “sudden death” at capacities far below the theoretical value. Identifying how discharge products limit the total capacity is crucial in Li–O2 system. We investigated the effect of Li2O2 seed layer deposited on carbon cathode under potentiostatic conditions at increasing overpotentials to the subsequent slow discharge at galvanostatic condition. The discharge capacity attainable in the second step is found to vary by more than a factor of 3 depending on the history, i.e., the seed layer. These results provide evidence that the battery history is decisive for the total discharge capacities.
      Subject
      DRNTU::Science::Chemistry
      Type
      Journal Article
      Series/Journal Title
      ChemSusChem
      Rights
      © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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      http://dx.doi.org/10.1002/cssc.201300986
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