Revealing instability and irreversibility in nonaqueous sodium-O2 battery chemistry

Revealing instability and irreversibility in nonaqueous sodium-O2 battery chemistry

Charging kinetics and reversibility of Na-O2 batteries can be influenced greatly by the particle size of NaO2 formed upon discharge, and exposure time (reactivity) of NaO2 to the electrolyte. Micrometer-sized NaO2 cubes formed at high discharge rates were charged at smaller overpotentials compared t...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2016-07, 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
Schlagworte:
Charging
Discharge
Electric batteries
Electrolytes
Instability
Nanostructure
Particle size
Stability
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Zusammenfassung:Charging kinetics and reversibility of Na-O2 batteries can be influenced greatly by the particle size of NaO2 formed upon discharge, and exposure time (reactivity) of NaO2 to the electrolyte. Micrometer-sized NaO2 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