Preparation of polymer electrolytes based on the polymerized imidazolium ionic liquid and their applications in lithium batteries

Li, Mingtao; Wang, Lu; Du, Tingting

doi:10.1002/app.40928

Cited by 7 publications

(2 citation statements)

References 30 publications

(39 reference statements)

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“…The structure and purity of LiMTFSI were proven by 1 H, 13 C, and 19 F NMR, IR spectroscopy, and elemental analysis. In contrast to ILMs with heterocyclic cations, LiMTFSI represents a crystalline, hygroscopic powder at r.t. with a mp of 75 °C (DSC).…”

Section: Synthesis Of Lithium 1-[3-(methacryloyloxy)propylsulfonyl]-1...mentioning

confidence: 99%

“…After determination of the optimal conditions, a set of block copolymers with the fixed poly(PEGM)'s length and different size of the poly(LiMTFSI) extension was successfully prepared (Table 1, LiBC-1−LiBC-4). The chemical structure of the synthesized block copolymers was confirmed by IR, 1 H, 13 C, and 19 F NMR spectroscopy (Figures S2−S3 in the Supporting Information).…”

Section: Raft Synthesis Of Poly(pegm)-b-poly(limtfsi)mentioning

confidence: 99%

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Single-Ion Block Copoly(ionic liquid)s as Electrolytes for All-Solid State Lithium Batteries

Porcarelli

Shaplov

Salsamendi

et al. 2016

ACS Appl. Mater. Interfaces

264

231

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Polymer electrolytes have been proposed as replacement for conventional liquid electrolytes in lithium-ion batteries (LIBs) due to their intrinsic enhanced safety. Nevertheless, the power delivery of these materials is limited by the concentration gradient of the lithium salt. Single-ion conducting polyelectrolytes represent the ideal solution since their nature prevents polarization phenomena. Herein, the preparation of a new family of single-ion conducting block copolymer polyelectrolytes via reversible addition-fragmentation chain transfer polymerization technique is reported. These copolymers comprise poly(lithium 1-[3-(methacryloyloxy)propylsulfonyl]-1-(trifluoromethylsulfonyl)imide) and poly(ethylene glycol) methyl ether methacrylate blocks. The obtained polyelectrolytes show low Tg values in the range of -61 to 0.6 °C, comparatively high ionic conductivity (up to 2.3 × 10(-6) and 1.2 × 10(-5) S cm(-1) at 25 and 55 °C, respectively), wide electrochemical stability (up to 4.5 V versus Li(+)/Li), and a lithium-ion transference number close to unity (0.83). Owing to the combination of all mentioned properties, the prepared polymer materials were used as solid polyelectrolytes and as binders in the elaboration of lithium-metal battery prototypes with high charge/discharge efficiency and excellent specific capacity (up to 130 mAh g(-1)) at C/15 rate.

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Section: Synthesis Of Lithium 1-[3-(methacryloyloxy)propylsulfonyl]-1...mentioning

confidence: 99%

Section: Raft Synthesis Of Poly(pegm)-b-poly(limtfsi)mentioning

confidence: 99%

Single-Ion Block Copoly(ionic liquid)s as Electrolytes for All-Solid State Lithium Batteries

Porcarelli

Shaplov

Salsamendi

et al. 2016

ACS Appl. Mater. Interfaces

264

231

View full text Add to dashboard Cite

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Poly(ionic liquid)‐Based Hybrid Hierarchical Free‐Standing Electrolytes with Enhanced Ion Transport and Fire Retardancy Towards Long‐Cycle‐Life and Safe Lithium Batteries

Huang

Long

et al. 2019

ChemElectroChem

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Ionic liquid electrolytes (ILEs), owing to their wide electrochemical window, high ionic conductivity, and low volatility, have been extensively applied in the field of energy storage devices. However, it is extremely significant and greatly challenging to seek the counterbalance of good mechanical properties and excellent electrochemical performances, including a high transference number of ILEs for safe flexible lithium batteries. In this work, a novel hybrid poly(ionic liquid)-based quasi-solid electrolyte containing silica nanoparticles (SiO 2 -PIL-QSE) is fabricated through the one-step in situ polymerization of the ionic liquid covalently tethered to silica nanoparticles (SiO 2 -IL-TFSI), which fills a poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) porous membrane prepared through phase inversion. The hybrid hierarchical porous architecture endows the SiO 2 -PIL-QSE with excellent thermal stability, good fire safety (i. e. nonflammable and low shrinkage), improved mechanical strength, and excellent electrochemical performance, including a high room-temperature ionic conductivity of 1.69 mS cm À 1 , a superior electrochemical window up to 5.5 V, as well as a high lithium-ion transference of 0.46. Accordingly, the LiFePO 4 j SiO 2 -PIL-QSE j Li cell can maintain a discharge specific capacity of 133.7 mAh g À 1 at 0.1 C at 25°C with a capacity retention ratio of 91.9 % after 400 cycles. The excellent performances and good applicability in the pouch-type battery of SiO 2 -PIL-QSE indicate a good prospect in the field of flexible solidstate polymer batteries (SSPB).[a] T.

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The effects of MgO nanofiller to the physicochemical and ionic liquid retention properties of PEMA‐MgTf2‐EMITFSI nanocomposite polymer electrolytes

2016

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Nanocomposite polymer electrolytes were prepared by dispersing different compositions of nanosized magnesium oxide (MgO) as ceramic nanofiller in poly(ethyl methacrylate) (PEMA)220 wt% magnesium triflate (MgTf 2 )240 wt% 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMITFSI) electrolytes. The role of ionic liquid, magnesium salt, and ceramic nanofiller were visualized by various physical and electrochemical analyses including scanning electron microscopy, thermogravimetric analysis, electrical impedance spectroscopy, and linear sweep voltammetry. The improvement of ionic liquid retention property has been observed by formation of free standing films of PEMA-40 wt% EMITFSI-20 wt% MgTf 2 dispersed with MgO. The smoothness of the films' surface observed in SEM images suggested the amorphous nature of the films. The room temperature ionic conductivity was improved up to 10 25 S/cm by the incorporation of 1 wt% of MgO nanofiller in the polymer electrolytes. Temperature dependent ionic conductivity showed the Arrhenius-like behavior with ionic conductivity of 3.78 3 10 24 S/cm at 1008C. The polymer electrolyte also showed enhanced electrochemical stability window. POLYM. COMPOS.,

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Preparation of polymer electrolytes based on the polymerized imidazolium ionic liquid and their applications in lithium batteries

Cited by 7 publications

References 30 publications

Single-Ion Block Copoly(ionic liquid)s as Electrolytes for All-Solid State Lithium Batteries

Single-Ion Block Copoly(ionic liquid)s as Electrolytes for All-Solid State Lithium Batteries

Poly(ionic liquid)‐Based Hybrid Hierarchical Free‐Standing Electrolytes with Enhanced Ion Transport and Fire Retardancy Towards Long‐Cycle‐Life and Safe Lithium Batteries

The effects of MgO nanofiller to the physicochemical and ionic liquid retention properties of PEMA‐MgTf2‐EMITFSI nanocomposite polymer electrolytes

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