5 years ago

Singlet Oxygen during Cycling of the Aprotic Sodium–O2 Battery

Singlet Oxygen during Cycling of the Aprotic Sodium–O2 Battery
Stefan A. Freunberger, Christian Slugovc, Lukas Schafzahl, Nika Mahne, Sergey M. Borisov, Martin Wilkening, Bettina Schafzahl
The biggest hurdle facing the development of Na–O2 batteries is parasitic chemistry. In their Communication (DOI: 10.1002/anie.201709351) S. A. Freunberger et al. show evidence that the highly reactive singlet oxygen forms at all stages of cycling, especially at high charging voltages, and that it is the main driver for parasitic reactions. However, trace water, which is needed for high capacities also drives the parasitic chemistry. Ways to prevent or eliminate singlet oxygen are therefore needed to improve cyclability.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201711136

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