Li-doped mixtures of alkoxy-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide and organic carbonates as safe liquid electrolytes for lithium batteries

Quinzeni, Irene; Ferrari, Stefania; Quartarone, Eliana; Tomasi, Corrado; Fagnoni, Maurizio; Mustarelli, Piercarlo

doi:10.1016/j.jpowsour.2013.03.036

Cited by 50 publications

(53 citation statements)

References 30 publications

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“…Most studies above have been centered on pyrrolidinium (Pyr 1x ) cation [27,30,32,34] based ILs -but also piperidinium cation [35] and various imidazolium (XMIm) cation based ILs have been used [28,33]. The reason for the dominance of Pyr 1x -based ILs is to avoid the acidic proton present on C(2) in the imidazolium ring, which render these ILs to have worse cathodic stability.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquids in lithium battery electrolytes: Composition versus safety and physical properties

Wilken

Xiong

Scheers

et al. 2015

Journal of Power Sources

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Section: Introductionmentioning

confidence: 99%

Ionic liquids in lithium battery electrolytes: Composition versus safety and physical properties

Wilken

Xiong

Scheers

et al. 2015

Journal of Power Sources

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“…For example, the 4:1 BMITFSI/PYR 14 TFSI mixed RTIL showed lower resistance and a lower overpotential than pure RTILs when used in Li–air batteries . Moreover, mixing aprotic solvents with RTILs is a promising approach to minimize the drawbacks and combine the best features of each solvent . Different imidazolium‐based RTILs such as BMITFSI, BMIPF 6 , and BMIBF 4 were combined with DMSO to study their ORR/OER performance with and without O 2 .…”

Section: Ionic‐liquid Electrolytesmentioning

confidence: 99%

“…[128] Moreover,m ixing aprotic solvents with RTILs is ap romising approach to minimize the drawbacks and combine the best features of each solvent. [129,130] Different imidazolium-based RTILs such as BMITFSI, BMIPF 6 ,a nd BMIBF 4 were combined with DMSO to study their ORR/OER performance with and without O 2 . [131] Them ixed electrolytes exhibited enhanced ORR/OER cycling ability and higher ORR current density than DMSO or the RTIL alone.T his is because of the improved O 2 solubility and diffusion coefficient in the mixed electrolytes.M eanwhile,aPYR 14 TFSI/TEGDME mixed electrolyte exhibited enhanced kinetics with al ow overpotential compared with pure TEGDME electrolyte.…”

Section: Rtil-based Mixed Solventsmentioning

confidence: 99%

Electrolytes for Rechargeable Lithium–Air Batteries

et al. 2019

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Lithium–air batteries are promising devices for electrochemical energy storage because of their ultrahigh energy density. However, it is still challenging to achieve practical Li–air batteries because of their severe capacity fading and poor rate capability. Electrolytes are the prime suspects for cell failure. In this Review, we focus on the opportunities and challenges of electrolytes for rechargeable Li–air batteries. A detailed summary of the reaction mechanisms, internal compositions, instability factors, selection criteria, and design ideas of the considered electrolytes is provided to obtain appropriate strategies to meet the battery requirements. In particular, ionic liquid (IL) electrolytes and solid‐state electrolytes show exciting opportunities to control both the high energy density and safety.

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“…Poly(ionic liquid)s (PILs), the macromolecular form of ILs, provide a path to coupling the advantages of ILs with polymeric materials. By introducing mechanically reinforcing components (either through the synthesis of block copolymers or via blending with other polymers), PILs have several potential applications in a wide range of areas including actuation devices, separation membranes, supercapacitors, sea water and biomass remediation, nanoscale lithography, and as flocculants for oil recovery . Typical synthesis of PILs involves either conventional free radical polymerization or controlled radical polymerization (CRP).…”

Section: Introductionmentioning

confidence: 99%

Polymerized ionic liquids: Effects of counter‐anions on ion conduction and polymerization kinetics

Chen

Dugger

et al. 2018

J. Polym. Sci. Part A: Polym. Chem.

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A novel imidazolium‐containing monomer, 1‐[ω‐methacryloyloxydecyl]‐3‐(n‐butyl)‐imidazolium (1BDIMA), was synthesized and polymerized using free radical and controlled free radical polymerization followed by post‐polymerization ion exchange with bromide (Br), tetrafluoroborate (BF4), hexafluorophosphate (PF6), or bis(trifluoromethylsulfonyl)imide (Tf2N). The thermal properties and ionic conductivity of the polymers showed a strong dependence on the counter‐ions and had glass transition temperatures (Tg) and ion conductivities at room temperature ranging from 10 °C to −42 °C and 2.09 × 10−7 S cm−1 to 2.45 × 10−5 S cm−1. In particular, PILs with Tf2N counter‐ions showed excellent ion conductivity of 2.45 × 10−5 S cm−1 at room temperature without additional ionic liquids (ILs) being added to the system, making them suitable for further study as electro‐responsive materials. In addition to the counter‐ions, solvent was found to have a significant effect on the reversible addition‐fragmentation chain‐transfer polymerization (RAFT) for 1BDIMA with different counter‐ions. For example, 1BDIMATf2N would not polymerize in acetonitrile (MeCN) at 65 °C and only achieved low monomer conversion (< 5%) at 75 °C. However, 1BDIMA‐Tf2N proceeded to high conversion in dimethylformamide (DMF) at 65 °C and 1BDIMABr polymerized significantly faster in DMF compared to MeCN. NMR diffusometry was used to investigate the kinetic differences by probing the diffusion coefficients for each monomer and counter‐ion in MeCN and DMF. These results indicate that the reaction rates are not diffusion limited, and point to a need for deeper understanding of the role electrostatics plays in the kinetics of free radical polymerizations. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 1346–1357

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Li-doped mixtures of alkoxy-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide and organic carbonates as safe liquid electrolytes for lithium batteries

Cited by 50 publications

References 30 publications

Ionic liquids in lithium battery electrolytes: Composition versus safety and physical properties

Ionic liquids in lithium battery electrolytes: Composition versus safety and physical properties

Electrolytes for Rechargeable Lithium–Air Batteries

Polymerized ionic liquids: Effects of counter‐anions on ion conduction and polymerization kinetics

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