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dc.contributor.author
Cecchetto, Laura
dc.contributor.author
Tesio, Alvaro Yamil
dc.contributor.author
Olivares Marín, Mara
dc.contributor.author
Espinasa, Marc Guardiola
dc.contributor.author
Croce, Fausto
dc.contributor.author
Tonti, Dino
dc.date.available
2019-04-15T14:33:04Z
dc.date.issued
2017-12
dc.identifier.citation
Cecchetto, Laura; Tesio, Alvaro Yamil; Olivares Marín, Mara; Espinasa, Marc Guardiola; Croce, Fausto; et al.; Tailoring oxygen redox reactions in ionic liquid based Li/O 2 batteries by means of the Li + dopant concentration; Royal Society of Chemistry; Sustainable Energy and Fuels; 2; 1; 12-2017; 118-124
dc.identifier.issn
2398-4902
dc.identifier.uri
http://hdl.handle.net/11336/74367
dc.description.abstract
The reusability, non-volatility and non-corrosiveness of ionic liquids (ILs), as well as their ease of isolation and a large electrochemical stability window, make them an interesting choice as environmentally friendly electrolytes for metal/air batteries. ILs have been described as designer solvents as their properties and behaviour can be adjusted to suit an individual reaction need. In the framework of this study we applied a conceptually similar design approach and showed that a simple parameter such as the concentration of a Li + dopant dramatically affects the reaction yields of Li/O 2 based energy storage devices. We studied the effect of Li + concentration from 0.1 to 1 M in a LiTFSI:PYR 14 TFSI ionic liquid electrolyte on the kinetics of the oxygen reduction reaction (ORR) and on the formation rate of different Li-O species at two different temperatures, finding that the discharge capacity, rates and product distribution change in a non-linear way. At 60 °C, the highest rates and up to one order of magnitude larger capacities were observed at intermediate LiTFSI concentrations, implying a complete mechanism switch from surface to volume phase mediation for Li 2 O 2 precipitation. At room temperature the same evolution was observed, even if in this case the surface mediation remained predominant at all concentrations. These results suggest the possibility to optimise the ionic liquid based Li/O 2 battery performances in terms of discharge capacity and lithium use, by tuning the temperature and alkali cation concentration.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ionic Liquid
dc.subject
Lithium Oxygen Battery
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Li+ Concentration
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Pyr14tfsi
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Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Tailoring oxygen redox reactions in ionic liquid based Li/O 2 batteries by means of the Li + dopant concentration
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-04-12T17:14:19Z
dc.journal.volume
2
dc.journal.number
1
dc.journal.pagination
118-124
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Cecchetto, Laura. Consejo Superior de Investigaciones Científicas; España
dc.description.fil
Fil: Tesio, Alvaro Yamil. Consejo Superior de Investigaciones Científicas; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
dc.description.fil
Fil: Olivares Marín, Mara. Consejo Superior de Investigaciones Científicas; España. Universidad de Extremadura; España
dc.description.fil
Fil: Espinasa, Marc Guardiola. MATGAS; España
dc.description.fil
Fil: Croce, Fausto. Università “d'Annunzio” Chieti-Pescara; Italia
dc.description.fil
Fil: Tonti, Dino. Consejo Superior de Investigaciones Científicas; España
dc.journal.title
Sustainable Energy and Fuels
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/C7SE00389G
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/Content/ArticleLanding/2018/SE/C7SE00389G


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