Functionalized polystyrene based single ion conducting gel polymer electrolyte for lithium batteries

Rohan, Rupesh; Sun, Yubao; Cai, Weiwei; Zhang, Yunfeng; Pareek, Kapil; Xu, Guodong; Cheng, Hansong

doi:10.1016/j.ssi.2014.10.013

Cited by 66 publications

(36 citation statements)

References 40 publications

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“…The EIS spectra for conductivity measurement at various temperatures are shown in Figure a.The conductivity linearly increases with the temperature, as depicted in the log σ vs 1000/T plot (Figure b), thereby showing a typical Arrhenius curve. As is typical of SICEs, this increment of the ionic conductivity with the temperature is not very steep (conductivity at 80 °C: 4.4×10 −3 S cm −1 ), thereby inferring that the polymeric salt portion remains intact in the membrane and performs as a SICE rather than being dissolved in the solvent , , , . The electrochemical stability of SP‐15 was investigated by linear sweep voltammetry (LSV) (Figure c) using lithium metal as counter and reference electrodes.…”

Section: Resultsmentioning

confidence: 88%

“…As is typical of SICEs, this increment of the ionic conductivity with the temperature is not very steep (conductivity at 80 8C: 4.4 10 À3 S cm À1 ), thereby inferring that the polymeric salt portion remains intact in the membrane and performs as a SICE rather than being dissolved in the solvent. [22,23,35,45,48] The electrochemical stability of SP-15 was investigated by linear sweep voltammetry (LSV) (Figure 2c) using lithium metal as counter and reference electrodes. The oxidation current remains nearly unchanged up to 5.2 V vs Li/ Li + , thereby confirming that the nanofabric possesses a wide electrochemical window.…”

Section: Electrochemical Performancementioning

confidence: 99%

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Nanofiber Single‐Ion Conducting Electrolytes: An Approach for High‐Performance Lithium Batteries at Ambient Temperature

et al. 2017

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Exploring the benefits of a nanofibrous morphology in electrolyte materials for Li‐battery applications, an approach of fabricating single‐ion conducting electrolyte (SICE) membranes is reported. A nonwoven nanofabric SICE membrane, delivering an outstanding performance, surpassing the conventional liquid electrolyte system at ambient conditions, was fabricated by using an electrospinning technique. When soaked in a carbonate solvent system, the membrane shows high ionic conductivity, electrochemical stability above 5.2 V (vs. Li/Li+) and a lithium transference number (tnormalLnormali+ ) close to unity (0.93). Moreover, a LiFePO4|Li cell assembled with this membrane performs charge/discharge up to the 5 C rate under ambient conditions with a coulombic efficiency close to 100%. The discharge capacities of this battery are found to be higher than those of a battery assembled with a commercial separator/dual‐ion salt electrolyte system up to 2 C, which offers significant progress for SICEs. Unlike most of the earlier reported SICEs that performed like a bulk‐material entity, the innovative approach might be valuable for future developments.

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Section: Resultsmentioning

confidence: 88%

Section: Electrochemical Performancementioning

confidence: 99%

Nanofiber Single‐Ion Conducting Electrolytes: An Approach for High‐Performance Lithium Batteries at Ambient Temperature

et al. 2017

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“…[23,24,27,49,50] The low T g arises mainly due to PMHS, the parent polysiloxane chain. [23,24,27,49,50] The low T g arises mainly due to PMHS, the parent polysiloxane chain.…”

Section: Synthesis and Characterization Of Lithium 4-styrenesulfonyl mentioning

confidence: 99%

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

et al. 2015

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We report a polysiloxane based single-ion conducting polymer electrolyte (SIPE) synthesized via hydrosilylation technique. Styrenesulfonyl (phenylsulfonyl) imide groups were grafted on the highly flexible polysiloxane chains followed by lithiation. The highly delocalized anionic charges in the grafted moiety give rise to weak association with lithium ions in the polymer matrix, resulting in lithium ion transference number close to unity (0.89) and remarkably high ionic conductivity (7.2 ×10 -4 Scm -1 ) at room temperature. The high flexibility arising from polysiloxane enables the glass transition temperature (T g ) to be below room temperature. The electrolyte membrane displays high thermal stability and a strong mechanical strength. A coin cell assembled with the membrane comprised of the electrolyte and poly(vinylidene-fluoride-cohexafluoropropene) (PVDF-HFP) performs remarkably well over a wide range of temperature with high charge-discharge rates.12 rule in a three step cyclic process.[36] Following the same mechanism, here, the vinylic part of SPSIK was attached to the polysiloxane chains upon addition of a Si-H bond.The grafting of SPSIK on PMHS chains followed by exchange of K + ions by Li + ions was clearly proven to be successful by FTIR and NMR spectra. As can be seen in the FTIR spectra of PMHS and SG (Fig. 1), the peak at 2167 cm -1 in PMHS, corresponding to Si-H bond, is disappeared in SG, which confirms the grafting of SPSIK. In addition, the peak at 1627 cm -1 in SPSIK, corresponding to the vinylic group, is also disappeared in SG, confirming the grafting, which consumes the vinylic group. Furthermore, the signature signal of Si-H, appears at 4.68 ppm ( 1 H NMR) in PMHS, and the three peaks in the range of 6.78 to 5.31 ppm ( 1 H NMR) in SPSIK corresponding to 3 vinylic protons, are disappeared in SG, validating the grafting of SP on the PMHS chains. [43,46]. Finally, the overall synthesis of SG electrolyte was confirmed by the coherence between the expected and the found values for all the elements, except for Si, in the elemental analysis. The deviation observed for Si is mainly attributed to the incomplete digestion of Si during the analysis, which was also noticed during the elemental analysis of commercial products of Si such as PMHS and poly(methylphenylsiloxane)(PMPS) ( Table S1 in Supporting Information). The GPC analysis of SG in the tetrahydrofuran (THF) mobile phase depicts the number average molecular weight (Mn) of 84,238, weight average molecular weight (Mw) of 150,230, and poly dispersity index (PDI) of 1.78 based on the polystyrene standard.

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“…One of the main objectives behind constructing a single‐ion system is potentially eliminating the aforementioned flaws and enhancing lithium ion battery performance. The mobility of the anion is restricted by immobilizing it into a polymeric/copolymeric lithium salt, permitting only the cation (lithium) transport, and achieving a single‐ion system . The sole target of ion systems is to potentially enhance the ionic conductivity and lifetime of the lithium ion battery.…”

Section: Introductionmentioning

confidence: 99%

“…The critical issues of increasing the life of commercial lithium‐ion battery as well as the transference number are the polarizing effect of dual‐ion conducting system. Both increase in cation conduction and elimination of the polarization effect could be provided by single‐ion conducting polymer electrolytes . In addition to this, a higher transference number in the existence of soft segmental chains could be ensured by single‐ion systems .…”

Section: Introductionmentioning

confidence: 99%

An investigation of lithium ion conductivity of copolymers based on P(AMPS‐co‐PEGMA)

Günday

Kamal

Almessiere

et al. 2019

J of Applied Polymer Sci

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In this work, a series of novel lithium ion‐conducting copolymer electrolytes based on 2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid (AMPS) and poly(ethyleneglycol) methacrylate (PEGMA) were produced and characterized. The copolymers were synthesized by free‐radical polymerization of the corresponding monomers with three different feed ratios to form P(AMPS‐co‐PEGMA)‐based electrolytes. After the polymerization, AMPS units of the copolymers were lithiated via ion exchange. The characterization of the electrolytes was done by 1H‐NMR, FTIR, differential scanning calorimetry (DSC), thermogravimetric analysis, X‐ray diffraction, scanning electron microscopy (SEM), and impedance analyzer. The copolymers were thermal stable approximately to 200 °C. Single Tg transitions in DSC curves verified the homogeneity as well as amorphous characteristics. SEM further confirmed the homogeneity of the electrolytes. The lithium ion conductivity of these new polymer electrolytes was studied by impedance dielectric impedance analyzer and the effect of PEGMA contents onto the ionic conductivity of these copolymer electrolytes were investigated. It was observed that the temperature dependence of ionic conductivity was interpreted over Vogel Tammann Fulcher model. The Li ion conductivity increased by PEGMA content and S3 has maximum conductivity of 3 × 10−3 mS cm−1 at 100 °C. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47798.

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Functionalized polystyrene based single ion conducting gel polymer electrolyte for lithium batteries

Cited by 66 publications

References 40 publications

Nanofiber Single‐Ion Conducting Electrolytes: An Approach for High‐Performance Lithium Batteries at Ambient Temperature

Nanofiber Single‐Ion Conducting Electrolytes: An Approach for High‐Performance Lithium Batteries at Ambient Temperature

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

An investigation of lithium ion conductivity of copolymers based on P(AMPS‐co‐PEGMA)

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