2022
DOI: 10.1002/aesr.202100159
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Deep Eutectic Solvents as Nonflammable Electrolytes for Durable Sodium‐Ion Batteries

Abstract: Sodium‐ion batteries are alternatives for lithium‐ion batteries in applications where cost‐effectiveness is of primary concern, such as stationary energy storage. The stability of sodium‐ion batteries is limited by the current generation of electrolytes, particularly at higher temperatures. Therefore, the search for an electrolyte which is stable at these temperatures is of utmost importance. Here, such electrolytes are introduced in the form of nonflammable deep eutectic solvents (DESs), consisting of sodium … Show more

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Cited by 18 publications
(38 citation statements)
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References 60 publications
(123 reference statements)
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“…Beside the disadvantageous wetting of the electrodes, [31,32] high salt Angewandte Chemie concentrations can hinder salt dissociation and lower the ionic conductivity of the electrolyte. [26] This is also reflected in the comparably high Ohmic resistance of 25 Ω for the 1 : 4 mixture compared to lower concentrated DESs (Figure S13). While DESs with ratios of 1 : 12 and 1 : 18 show nearly the same resistance of the electrolyte with � 15 Ω, the resistance of the eutectic ratio is already a little higher (17 Ω).…”
Section: Galvanostatic Cyclingmentioning
confidence: 93%
“…Beside the disadvantageous wetting of the electrodes, [31,32] high salt Angewandte Chemie concentrations can hinder salt dissociation and lower the ionic conductivity of the electrolyte. [26] This is also reflected in the comparably high Ohmic resistance of 25 Ω for the 1 : 4 mixture compared to lower concentrated DESs (Figure S13). While DESs with ratios of 1 : 12 and 1 : 18 show nearly the same resistance of the electrolyte with � 15 Ω, the resistance of the eutectic ratio is already a little higher (17 Ω).…”
Section: Galvanostatic Cyclingmentioning
confidence: 93%
“…Neben der ungünstigen Benetzung der Elektroden [31,32] können hohe Salzkonzentrationen die Salzdissoziation behindern und somit die Ionenleitfähigkeit des Elektrolyten verringern. [26]…”
Section: Galvanostatisches Zykelnunclassified
“…Bei den Mischungen mit x NaTFSI � 0.06 tritt ein kleiner endothermer Peak um 0 °C auf (Abbildung 1A), der auch bei reinem NMA zu beobachten ist (Abbildung S2) und bereits früher festgestellt wurde. [26] Dies hängt wahrscheinlich mit dem Restwassergehalt von ungetrocknetem NMA zusammen.…”
Section: Ergebnisse Und Diskussionunclassified
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