Can Hybrid Na-Air Batteries Outperform Nonaqueous Na-O 2 Batteries?

In recent years, there has been an upsurge in the study of novel and alternative energy storage devices beyond lithium-based systems due to the exponential increase in price of lithium. Sodium (Na) metal-based batteries can be a possible alternative to lithium-based batteries due to the similar elec...

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Bibliographic Details
Published in:Advanced science 2020-03, Vol.7 (5), p.1902866
Main Authors: Khan, Ziyauddin, Vagin, Mikhail, Crispin, Xavier
Format: Article
Language:English
Subjects:
Batteries
Electric vehicles
Electrodes
Electrolytes
Energy efficiency
Lithium
Sodium
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Summary:In recent years, there has been an upsurge in the study of novel and alternative energy storage devices beyond lithium-based systems due to the exponential increase in price of lithium. Sodium (Na) metal-based batteries can be a possible alternative to lithium-based batteries due to the similar electrochemical voltage of Na and Li together with the thousand times higher natural abundance of Na compared to Li. Though two different kinds of Na-O batteries have been studied specifically based on electrolytes until now, very recently, a hybrid Na-air cell has shown distinctive advantage over nonaqueous cell systems. Hybrid Na-air batteries provide a fundamental advantage due to the formation of highly soluble discharge product (sodium hydroxide) which leads to low overpotentials for charge and discharge processes, high electrical energy efficiency, and good cyclic stability. Herein, the current status and challenges associated with hybrid Na-air batteries are reported. Also, a brief description of nonaqueous Na-O batteries and its close competition with hybrid Na-air batteries are provided.
ISSN:2198-3844
2198-3844
DOI:10.1002/advs.201902866