Tailoring the Properties of Gel Polymer Electrolytes for Sodium-Ion Batteries Using Ionic Liquids: A Review
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Chemistry_Tailoring the properties of gel polymer electrolytes....pdf (3.28 MB)
0000-0002-1824-1123 Date
2024
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Wiley VCH
Abstract
Ionic liquids are an extraordinary group of compounds, fullyionic in structure like inorganic salts but with low meltingpoints, that resemble organic molecular solvents. Their chem-ical, electrochemical, and thermal stability is what draws theattention and enables their use in many applications, includingelectrochemical power sources. Even though they are no longerconsidered eco-friendly because of nonnegligible toxicity andlong bioaccumulation, they can still be efficiently recovered,purified, and reused. These attributes can be harvested toenhance the properties of gel polymer electrolytes for theemerging sodium-ion batteries. The variety of anions andcations for ILs and their influence on the final properties of thecompound opens the road to tuning the properties of gelpolymer electrolytes. Ionic liquids as plasticizers constitute amajor part of gel polymer electrolytes (average of 70 wt%) andhence, they affect the fundamental properties of gel electro-lytes like ionic conductivity and electrochemical window. Theyalso improve the safety features of sodium-ion batteries, whichis relevant for their anticipated applications in stationary energystorage and electric vehicles. The presented review paper aimsto explain the relationship between the cation and anion inionic liquid and the properties of gel electrolytes for sodium-ionbatteries.
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A. Gabryelczyk, A. Swiderska-Mocek, Chem. Eur. J. 30(27), 2024, e2023042072024