Polymer-based ionic liquids in lithium batteries

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry Pub Date : 2024-12-24 DOI:10.1016/j.coelec.2024.101639

Arup Ghorai , Aby Alex , Shashi Priya Balmuchu , Susanta Banerjee , Soumyadip Choudhury

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引用次数: 0

Abstract

Ionic liquids (ILs) offer advantages like low volatility, high stability, and conductivity, making them valuable in Li-ion and lithium-sulfur (Li–S) batteries compared to volatile organic solvents-based electrolytes and other green solvents such as deep eutectic solvents. ILs are propitious in Li–S batteries for reducing polysulfide solubility and preventing dendrite growth, but are hygroscopic, costly, and liquid in nature. Ionic liquids with polymerizable functionalities, such as vinyl groups, may undergo polymerization, thus resulting in a polymerized ionic liquid (PIL), which can be cast as film to serve as a separator loaded with lithium salts. The temperature dependence on ionic conductivity of PILs considering relaxation and segmental motion of the polymer chains are discussed with the help of mathematical expressions. Such PILs have significantly low moisture absorption, low or no flammability, and are castable as films, making them promising candidates for next-generation lithium battery electrolytes.

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锂电池中的聚合物基离子液体

离子液体（ILs）具有低挥发性、高稳定性和导电性等优点，与挥发性有机溶剂电解质和其他绿色溶剂（如深共晶溶剂）相比，它们在锂离子电池和锂硫电池（Li-S）中很有价值。在Li-S电池中，il有利于降低多硫化物的溶解度和防止枝晶的生长，但它具有吸湿性、昂贵性和液态性。具有可聚合功能的离子液体，如乙烯基，可以进行聚合，从而产生聚合离子液体（PIL），它可以作为薄膜作为装载锂盐的分离器。考虑聚合物链的弛豫和节段运动，用数学表达式讨论了温度对离子电导率的依赖关系。这种pil具有显著的低吸湿性，低可燃性或不可燃性，并且可以作为薄膜浇注，使其成为下一代锂电池电解质的有希望的候选者。

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来源期刊

Current Opinion in Electrochemistry Chemistry-Analytical Chemistry

CiteScore

14.00

自引率

5.90%

发文量

272

审稿时长

73 days

期刊介绍： The development of the Current Opinion journals stemmed from the acknowledgment of the growing challenge for specialists to stay abreast of the expanding volume of information within their field. In Current Opinion in Electrochemistry, they help the reader by providing in a systematic manner: 1.The views of experts on current advances in electrochemistry in a clear and readable form. 2.Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications. In the realm of electrochemistry, the subject is divided into 12 themed sections, with each section undergoing an annual review cycle: • Bioelectrochemistry • Electrocatalysis • Electrochemical Materials and Engineering • Energy Storage: Batteries and Supercapacitors • Energy Transformation • Environmental Electrochemistry • Fundamental & Theoretical Electrochemistry • Innovative Methods in Electrochemistry • Organic & Molecular Electrochemistry • Physical & Nano-Electrochemistry • Sensors & Bio-sensors •