Goldilocks and the three glymes: How Na+ solvation controls Na–O2 battery cycling

N. Ortiz Vitoriano; I. Ruiz de Larramendi; R. L. Sacci; I. Lozano; C. A. Bridges; O. Arcelus; M. Enterría; J. Carrasco; T. Rojo; G. M. Veith

doi:10.1016/j.ensm.2020.04.034

Goldilocks and the three glymes: How Na⁺ solvation controls Na–O₂ battery cycling

N. Ortiz Vitoriano, I. Ruiz de Larramendi, R. L. Sacci, I. Lozano, C. A. Bridges, O. Arcelus, M. Enterría, J. Carrasco, T. Rojo, G. M. Veith

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

In this work we report a framework to understand the role of solvent-salt interactions and how they mediate the performance of sodium-air/O₂ batteries. The utilization of suitable electrolyte materials remains a point of major concern within the research community, as their stability and decomposition pathways during cycling are intimately connected with capacity and cycle life. Glyme based solvents have been widely utilized in Na–O₂ batteries, however, to date no clear correlation between solvent/electrolyte properties and battery performance has been given. Herein, we have examined the effect of glyme chain length (ethylene glycol dimethyl ether DME; diethylene glycol dimethyl ether, DEGDME; and tetraethylene glycol dimethyl ether, TEGME) on the cycling behaviour of Na–O₂ batteries and conclude that overall cell performance is highly dependent on solvent selection, salt concentration and rate of discharge/charge. We demonstrate how solvent selection helps define cell chemistry and performance by linking salt-solvent interactions to enthalpy of dissolution - and subsequently to sodium battery electrolyte properties - through the combination of both experimental and theoretical methodologies. The approaches detailed in this study could be used to predictively prepare electrolytes for Li-air batteries, other glyme-based electrochemical systems and low temperature applications.

Original language	English
Pages (from-to)	235-245
Number of pages	11
Journal	Energy Storage Materials
Volume	29
DOIs	https://doi.org/10.1016/j.ensm.2020.04.034
State	Published - Aug 2020

Funding

N.O.-V. and M.E would also like to thank the Basque Government for financial support through ELKARTEK project CICE20 . This work was also financially supported by the " Ministerio de Economía y Competitividad " of Spain (under project MAT2016-78266-P ), the " Fondo Europeo de Desarrollo Regional" (FEDER) and the Eusko Jaurlaritza /Gobierno Vasco (under project IT1226-19 ). Computer resources were provided by SGI/IZO-SGIker UPV/EHU (Arina cluster) and i2BASQUE academic network. FTIR measurements and their interpretation were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Division of Materials Science and Engineering (RLS) . A portion of this (FTIR, EC – RLS, GMV, Synthesis and Process Science Program; solvation energetics – CAB, Materials Chemistry Program) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division . N.O.-V. and M.E would also like to thank the Basque Government for financial support through ELKARTEK project CICE20. This work was also financially supported by the ?Ministerio de Econom?a y Competitividad? of Spain (under project MAT2016-78266-P), the ?Fondo Europeo de Desarrollo Regional? (FEDER) and the Eusko Jaurlaritza/Gobierno Vasco (under project IT1226-19). Computer resources were provided by SGI/IZO-SGIker UPV/EHU (Arina cluster) and i2BASQUE academic network. FTIR measurements and their interpretation were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Division of Materials Science and Engineering (RLS). A portion of this (FTIR, EC ? RLS, GMV, Synthesis and Process Science Program; solvation energetics ? CAB, Materials Chemistry Program) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

Keywords

Coordination
Cycle life
Glyme-based electrolyte
Low temperature electrolytes
Metal-air electrolyte
Sodium-air batteries
Solvation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ensm.2020.04.034

Cite this

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title = "Goldilocks and the three glymes: How Na+ solvation controls Na–O2 battery cycling",

abstract = "In this work we report a framework to understand the role of solvent-salt interactions and how they mediate the performance of sodium-air/O2 batteries. The utilization of suitable electrolyte materials remains a point of major concern within the research community, as their stability and decomposition pathways during cycling are intimately connected with capacity and cycle life. Glyme based solvents have been widely utilized in Na–O2 batteries, however, to date no clear correlation between solvent/electrolyte properties and battery performance has been given. Herein, we have examined the effect of glyme chain length (ethylene glycol dimethyl ether DME; diethylene glycol dimethyl ether, DEGDME; and tetraethylene glycol dimethyl ether, TEGME) on the cycling behaviour of Na–O2 batteries and conclude that overall cell performance is highly dependent on solvent selection, salt concentration and rate of discharge/charge. We demonstrate how solvent selection helps define cell chemistry and performance by linking salt-solvent interactions to enthalpy of dissolution - and subsequently to sodium battery electrolyte properties - through the combination of both experimental and theoretical methodologies. The approaches detailed in this study could be used to predictively prepare electrolytes for Li-air batteries, other glyme-based electrochemical systems and low temperature applications.",

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author = "{Ortiz Vitoriano}, N. and {Ruiz de Larramendi}, I. and Sacci, {R. L.} and I. Lozano and Bridges, {C. A.} and O. Arcelus and M. Enterr{\'i}a and J. Carrasco and T. Rojo and Veith, {G. M.}",

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AU - Ortiz Vitoriano, N.

AU - Ruiz de Larramendi, I.

AU - Sacci, R. L.

AU - Lozano, I.

AU - Bridges, C. A.

AU - Arcelus, O.

AU - Enterría, M.

AU - Carrasco, J.

AU - Rojo, T.

AU - Veith, G. M.

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