Revealing instability and irreversibility in nonaqueous sodium–O 2 battery chemistry

Revealing instability and irreversibility in nonaqueous sodium–O 2 battery chemistry

Charging kinetics and reversibility of Na–O 2 batteries can be influenced greatly by the particle size of NaO 2 formed upon discharge, and exposure time (reactivity) of NaO 2 to the electrolyte. Micrometer-sized NaO 2 cubes formed at high discharge rates were charged at smaller overpotentials compar...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2016-08, Vol.52 (62), p.9691-9694
Hauptverfasser: Sayed, Sayed Youssef, Yao, Koffi P. C., Kwabi, David G., Batcho, Thomas P., Amanchukwu, Chibueze V., Feng, Shuting, Thompson, Carl V., Shao-Horn, Yang
Format: Artikel
Sprache:eng
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Zusammenfassung:Charging kinetics and reversibility of Na–O 2 batteries can be influenced greatly by the particle size of NaO 2 formed upon discharge, and exposure time (reactivity) of NaO 2 to the electrolyte. Micrometer-sized NaO 2 cubes formed at high discharge rates were charged at smaller overpotentials compared to nanometer-sized counterparts formed at low rates.
ISSN:1359-7345
1364-548X
DOI:10.1039/C6CC02291J