Application of Gel Polymer Electrolytes Based on Ionic Liquids in Lithium-Sulfur Batteries

Baloch, Marya; Vižintin, Alen; Chellappan, Rajesh Kumar; Moškon, Jože; Shanmukaraj, Devaraj; Dedryvère, Rémi; Rojo, Teófilo; Dominko, Robert

doi:10.1149/2.1151610jes

Cited by 35 publications

(26 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During cycling, these nanoparticles would maintain contacts between the conductive components while permitting the flow of electrolyte. While PILs have been examined for use in a variety of different electrochemical devices and batteries, only a few studies have been conducted for the use of PILs in Li−S batteries . Helms et al.…”

Section: Examples Of Ils and Pilsmentioning

confidence: 95%

“…While PILs have been examined for use in a variety of different electrochemical devices and batteries, only a few studies have been conducted for the use of PILs in LiÀS batteries. [84][85][86] Helms et al compared the performance of a LiÀS battery where the binder was either PVdF or a PIL with a PYR-based backbone and TFSI as a counter-ion. They found strong evidence that the backbone of the cationic PIL could interact with the hydrophobic and electrolyte soluble polysulfides, which could prevent their diffusion from the cathode, leading in turn to improved cycling stability.…”

Section: Il Based Electrolytesmentioning

confidence: 99%

See 1 more Smart Citation

Ionic Liquids and their Polymers in Lithium‐Sulfur Batteries

Josef

Yan

Stan

et al. 2019

Israel Journal of Chemistry

Self Cite

View full text Add to dashboard Cite

Future optimized lithium‐sulfur batteries may promise higher energy densities than the current standard. However, there are many barriers which hinder their commercialization. In this review we describe how ionic liquids (ILs) and their polymers are utilized in different components of the battery to address some of these issues. For example, IL‐based electrolytes have the potential to reduce the solubility of polysulfides compared to conventional organic electrolytes. Polymerizing ILs directly on the surface of the Li‐metal anode is suggested as an approach to protect the surface of this electrode. Finally, using poly(ionic liquids) (PILs) as binders for the cathode active material may increase the performance of the cathode as compared to polyvinylidene difluoride (PVdF) and could inhibit swelling‐induced degradation. These results demonstrate the advantages of ILs and their polymers for improving the performance of Li−S batteries.

show abstract

Section: Examples Of Ils and Pilsmentioning

confidence: 95%

Section: Il Based Electrolytesmentioning

confidence: 99%

Ionic Liquids and their Polymers in Lithium‐Sulfur Batteries

Josef

Yan

Stan

et al. 2019

Israel Journal of Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…The 1‐propyl‐3‐methylimidazolium bis(trifluoromethysulfonyl)imide (PMImTFSI) as one of the ILs was used in GPEs . The Li–S cell with the PMImTFSI‐based GPE showed a high initial discharge capacity of 1029 mA h g −1 and a capacity retention of 885 mA h g −1 after 30 cycles at 0.1 C. However, increased internal resistance between lithium anode and IL‐based SPEs was also caused at the same time, reflecting in cell's performance was fast capacity fade and large polarization during cycling …”

Section: Hybrid Electrolyte Systemsmentioning

confidence: 98%

Development and Challenges of Functional Electrolytes for High‐Performance Lithium–Sulfur Batteries

Wang

Chen

et al. 2018

Adv Funct Materials

151

110

View full text Add to dashboard Cite

Lithium-sulfur (Li-S) batteries, as one of the most important candidates of next-generation batteries, are famous for high energy density, low cost, and environmental friendly benignity. However, issues originating from polysulfide shuttle of common liquid electrolytes (e.g., capacity fade, poor cycle life, and safe issue) have hindered the applications of Li-S batteries in various occasions. This review summarizes the main efforts in the electrolytes of Li-S batteries, including liquid, solid state, and hybrid electrolyte systems. The development of functional electrolytes for Li-S batteries is hopeful to alleviate the problems Li-S batteries faced today. The liquid electrolytes circumvent the polysulfide shuttle and the resultant problems by utilizing different functional solvents, lithium salts, and additives. Solid-state electrolytes as promising electrolytes are optimized to enhance the ionic conductivity at room temperature and decrease the interfacial resistance. Hybrid electrolytes that consist of two or more single electrolytes may be considered as unique categories because they have the potential advantages than the single electrolyte systems. Challenges and perspectives of Li-S electrolytes are also proposed based on the requirement for high-performance Li-S batteries.be reduced to short-chain ones, which subsequently migrate back to cathode and are reoxidized to long-chain lithium polysulfide intermediates. This endless movement and shuttle of polysulfides between cathode and anode is generally called as polysulfide shuttle. During cycling, the shuttle effect of polysulfides continuously occurs and results in lower Coulombic efficiency and anode corrosion. [3a,4,5] c) Safety issues: the electrolyte solvents may be not stable when the high reactivity of lithium metal and the soluble polysulfides are present, which results in the gradual depletion of solvents and the gas expansion of batteries. [6] High flammable organic solvents increase safety hazard, when used under high-temperature conditions. [7] Moreover, the growth of lithium dendrites can potentially penetrate the separator, which leads to internal short circuits of batteries and serious safety issues. [8] In order to overcome the issues mentioned above and improve battery performance, some strategies have been examined, including the design of sulfur cathodes, [4,9] the protection of lithium anode, [10] and the optimization of electrolytes. [11] The electrolyte between cathode and anode is a crucial component as it affects the lithium-ion transport during the cycling process, which in part determines the batteries performance. [12] Electrolyte development is time consuming because it requires high-throughput experiment but is indispensable. Some works have therefore focused on the development of functional electrolyte in the last several years. Different roads lead to the same thing that usable electrolytes should possess many characters, such as high ionic transport, low viscosity, good chemical and electrochemical stability, nonflammab...

show abstract

“…Ionic liquids (ILs) have attracted much attention from both the industrial and academic communities due to the nature of these liquid so materials. 1 Recently, IL-containing systems have been widely studied and different nanostructures in ILcontaining systems have been obtained, such as micelles, 2 emulsions, 3 microemulsions, 4 gels, 5,6 liquid crystals and vesicles. [7][8][9] In recent years, ILs have also been discovered that exhibit uorescence, and can therefore be applied in the determination of mercury ions, 10 picric acid, 11 and others, [12][13][14] which indicates that they are promising for uorescence detection.…”

Section: Introductionmentioning

confidence: 99%