Ionic Liquid Electrolytes: Safe, Stable Cycling of Lithium Metal Batteries with Low‐Viscosity, Fire‐Retardant Locally Concentrated Ionic Liquid Electrolytes (Adv. Funct. Mater. 35/2020)

Lee, Sukhyung; Park, Kisung; Koo, Bonhyeop; Park, Changhun; Jang, Moongyu; Lee, Hongkyung

doi:10.1002/adfm.202070234

Cited by 23 publications

(2 citation statements)

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“…Many strategies have also been widely employed to prepare advanced batteries with higher specific capacity and higher safety. − Lee et al reported a fire-retardant locally concentrated ionic liquid (LCIL) electrolyte, which exhibited high ionic conductivity and low viscosity, apparent lithium-ion transference number ( t Li+ ), self-diffusion coefficients, and separator wettability. Besides, the Li//LiCoO 2 cells with LCIL also showed excellent cycle capability and rate charge/discharge performance.…”

Section: Introductionmentioning

confidence: 99%

Mechanically Strong and Electrochemically Stable Single-Ion Conducting Polymer Electrolytes Constructed from Hydrogen Bonding

Gan

Zhang

et al. 2021

Langmuir

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Herein, composite membranes based on a single-ion conducting polymer electrolyte (SIPE) and poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) were prepared by an electrospinning technology. The SIPE with hydrogen bonding was obtained via reversible addition−fragmentation chain transfer (RAFT) copolymerization of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate (UPyMA), poly(ethylene glycol) methyl ether methacrylate (PEGMA), and lithium 4styrenesulfonyl (phenylsulfonyl) imide (SSPSILi). The obtained composite membrane exhibited a highly porous network structure, superior thermal stability (>300 °C), and high mechanical strength (17.3 MPa). The fabricated SIPE/PVDF-HFP composite membrane without lithium salts possessed a high ionic conductivity of 2.78 × 10 −5 S cm −1 at 30 °C, excellent compatibility with the lithium metal electrode, and high lithium-ion transference number (0.89). The symmetric Li//Li cell exhibited a superior cycle performance without short circuit, indicating the generation of a stable interface between SIPE and the lithium metal electrode during the process of lithium plating/stripping, which could inhibit lithium dendrite growth in lithium metal batteries (LMBs). The Li//LiFePO 4 cell also exhibited superior cycle life and excellent rate capability at 60 or 25 °C. In consequence, the composite membrane exhibits a considerable future prospect for advanced LMBs.

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Section: Introductionmentioning

confidence: 99%

Mechanically Strong and Electrochemically Stable Single-Ion Conducting Polymer Electrolytes Constructed from Hydrogen Bonding

Gan

Zhang

et al. 2021

Langmuir

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“…Recently, ionic liquids (ILs) have been investigated as polymerization catalysts/initiators of ε-caprolactone (εCL), ε-caprolactam, and epoxy resins. − ILs are organic salts whose melting point is below 100 °C; indeed, many are liquids at room temperature. , IL molecules usually consist of a cationic “head” with an anionic counterion and one or more hydrophobic (aliphatic and/or aromatic) “tails.” Depending on the type of cationic core, the size and type of the counterion, the length of aliphatic alkyl chain(s), or a combination of alkyl chains with aromatic structures, ILs exhibit several intrinsic properties such as low volatility, high thermal and chemical stability, insignificant flammability, good thermal conductivity, high ionic mobility, stability in the presence of moisture, etc. − Mainly thanks to beneficially high thermal stability and tuneable chemical structures, ILs have a huge potential for applications in the field of polymers, e.g., as initiators of polymerization, catalysts, curing agents, , or building blocks of polymer networks. , However, the high viscosity of ILs and their difficult separation from the products are the main limitations of their wider use in polymer catalysis …”

Section: Introductionmentioning

confidence: 99%

Intercalation of Ionic Liquids into LDH Structures for Microwave-Accelerated Polymerizations

Beneš,

Konefał,

Bujok

et al. 2023

Inorg. Chem.

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Microwave-accelerated ring-opening polymerization (ROP) of cyclic esters catalyzed by ionic liquid (IL) anions, intercalated into layered double hydroxides (LDHs), has been recently described as a fast and environmentally friendly synthetic way to prepare biodegradable polyester/LDH nanocomposites. However, to observe this synergistic catalytic effect between microwaves and IL anions and to achieve a homogeneous structure of the final polymer nanocomposite, the IL anions must be efficiently intercalated inside the LDH structure. Herein, we investigate the effects of various metal compositions of M 2+ /Al 3+ LDHs (M = Mg, Co, and Ca) and different LDH synthetic routes (one-step direct coprecipitation, two-step coprecipitation/anion exchange, and two-step urea/anion exchange) on the intercalation efficiency of trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate IL. The most effective IL anion intercalation was observed for Ca 2+ /Al 3+ LDH prepared using the two-step method consisting of coprecipitation and subsequent anion exchange. After optimization, this synthetic pathway led to the production of LDHs with intercalated IL anions and a reduced amount of intercalated water (<0.6 wt %). The catalytic ability of thus optimized LDH particles was demonstrated on the microwave-assisted ROP of ε-caprolactone, showing rapid progress of polymerization. Within minutes, the polycaprolactones with an average molecular mass in the range of 20 000–50 000 g/mol containing fully delaminated and exfoliated LDH nanoparticles were obtained.

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Ionic liquid electrolytes for lithium-ion batteries

Sabi,

Aziam,

Youcef

2025

Nanostructured Lithium-Ion Battery Materials

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Ionic Liquid Electrolytes: Safe, Stable Cycling of Lithium Metal Batteries with Low‐Viscosity, Fire‐Retardant Locally Concentrated Ionic Liquid Electrolytes (Adv. Funct. Mater. 35/2020)

Cited by 23 publications

References 0 publications

Mechanically Strong and Electrochemically Stable Single-Ion Conducting Polymer Electrolytes Constructed from Hydrogen Bonding

Mechanically Strong and Electrochemically Stable Single-Ion Conducting Polymer Electrolytes Constructed from Hydrogen Bonding

Intercalation of Ionic Liquids into LDH Structures for Microwave-Accelerated Polymerizations

Ionic liquid electrolytes for lithium-ion batteries

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