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Highly Homogeneous Sodium Superoxide Growth in Na-O2 Batteries Enabled by a Hybrid Electrolyte
journal contribution
posted on 2020-03-13, 00:00 authored by N Ortiz-Vitoriano, I Monterrubio, L Garcia-Quintana, J M López Del Amo, Fangfang ChenFangfang Chen, T Rojo, Patrick HowlettPatrick Howlett, Maria ForsythMaria Forsyth, Cristina Pozo-GonzaloCristina Pozo-Gonzalo© 2020 American Chemical Society. Energy storage is a major challenge for modern society, with batteries being the prevalent technology of choice. Within this area, sodium oxygen (Na-O2) batteries have the capability to make a step change, thanks to their high theoretical energy density. In order to facilitate their use, the development of electrolytes is critical to overcome certain limitations that arise because of the technology's unique chemistry, particularly relating to the stability of superoxide species. In this study, we have demonstrated the importance of selecting a suitable electrolyte to facilitate both a highly homogeneous distribution of the discharge products and to minimize the formation of undesirable reaction products. The combination of pyrrolidinium-based ionic liquid and diglyme can dramatically change the cell performance. The effect of sodium salt concentration as well as the amount of diglyme and N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, [C4mpyr][TFSI], in Na-O2 batteries has also been comprehensively studied by combination of experimental and simulation techniques.
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Journal
ACS Energy LettersVolume
5Issue
3Pagination
903 - 909Publisher
American Chemical SocietyLocation
Washington, DC.Publisher DOI
eISSN
2380-8195Publication classification
C1 Refereed article in a scholarly journalUsage metrics
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