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Highly reversible oxygen to superoxide redox reaction in a sodium-containing ionic liquid
journal contribution
posted on 2017-01-01, 00:00 authored by Cristina Pozo-GonzaloCristina Pozo-Gonzalo, Patrick HowlettPatrick Howlett, D R MacFarlane, Maria ForsythMaria ForsythComprehensive studies regarding the impact of the electrolyte composition on the oxygen reduction mechanism are important to deliver highly efficient rechargeable sodium–air batteries. Thus, we report, for the first time, the oxygen reduction mechanisms and discharge products in a pyrrolidinium-based ionic liquid in the presence of different Na+ ion concentrations. Upon increasing the Na+ salt concentration, oxygen reduction becomes more efficient (e.g. 74%) and the onset potential of the reduction process shifts to a more positive value due to superior solvation of the superoxide anion by Na+. These observations should provide a platform of potential electrolytes for Na–air batteries.
History
Journal
Electrochemistry communicationsVolume
74Pagination
14 - 18Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
1388-2481Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, ElsevierUsage metrics
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