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History Effects in Lithium–Oxygen Batteries: How Initial Seeding Influences the Discharge Capacity

Authors

  • Dr. Ali Rinaldi,

    1. TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 (Singapore)
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  • Olivia Wijaya,

    1. TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 (Singapore)
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  • Prof. Harry E. Hoster,

    Corresponding author
    1. TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 (Singapore)
    2. Energy Research Institute at Nanyang Technological University, 1 CleanTech Loop, #06-04 CleanTech One, 637141 (Singapore)
    • Harry E. Hoster, TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 (Singapore)

      Denis Y. W. Yu, Energy Research Institute at Nanyang Technological University, 1 CleanTech Loop, #06-04 CleanTech One, 637141 (Singapore)

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  • Dr. Denis Y. W. Yu

    Corresponding author
    1. Energy Research Institute at Nanyang Technological University, 1 CleanTech Loop, #06-04 CleanTech One, 637141 (Singapore)
    2. School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong SAR)
    • Harry E. Hoster, TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 (Singapore)

      Denis Y. W. Yu, Energy Research Institute at Nanyang Technological University, 1 CleanTech Loop, #06-04 CleanTech One, 637141 (Singapore)

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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.

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