Enhanced ionic conductivity in borate ester plasticized Polyacrylonitrile electrolytes for lithium battery application

Kaynak, Mehmet; Yusuf, Abdulmalik; Aydın, Hamide; Taskiran, M.U.; Bozkurt, Ayhan

doi:10.1016/j.electacta.2015.02.214

Cited by 32 publications

(11 citation statements)

References 31 publications

(39 reference statements)

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“…The polymer electrolytes that are used the lithium ion battery electrolytes should have certain thermal stability is especially during applications. The TGA gives an idea of the feasible physical changes that may occur during thermal stimulation of the electrolyte when the battery is applied …”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…The TGA gives an idea of the feasible physical changes that may occur during thermal stimulation of the electrolyte when the battery is applied. 27 TG thermograms of neat polymers and copolymer samples are presented in Figure 4. PAMPS and PPEGMA have thermal stabilities of 190 and 200 C, respectively.…”

Section: Thermal Analysismentioning

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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“…These frequency independent plateau regions correspond to DC conductivities where these values were derived by linear fitting of the data. Furthermore, at higher frequencies and within the temperature range from 20 °C to 40 °C, a rise in AC conductivity is due to a well‐known phenomenon so called dispersion in ion conducting electrolytes. This domain shifts to higher frequencies at higher temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…This domain shifts to higher frequencies at higher temperatures. Frequency dependent AC conductivity domains could be described by power‐law formulation.…”

Section: Resultsmentioning

confidence: 99%

“…This is due to the rapid electron transfer capability of SPSU / 5% Al 2 O 3 / 0.2 IL and this feature supports rapid ion diffusion between the electrodes. In addition, the SPSU / 5% Al 2 O 3 / 0.2 IL system maintains the ion transfer properties at high scanning rates (400 mV s −1 ), indicating high electrochemical rate capability. The Randles Sevchik equation was used to show the anodic ( I pa ) and cathodic ( I pc ) peak currents with the square of the scan rate.…”

Section: Resultsmentioning

confidence: 99%

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Fabrication of Al₂O₃/IL‐Based Nanocomposite Polymer Electrolytes for Supercapacitor Application

et al. 2019

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In the present work, we investigated physical properties as well as supercapacitor application of nanocomposite polymer gel electrolytes. The polymer electrolyte (PE) consists of Ionic Liquid, (1‐Ethyl‐3‐methyl‐imidazolium tetrafluoroborate (IL)) as a softening agent, aluminum oxide (Al2O3) as a nano additive and sulfonated polysulfone (SPSU) as the main polymer. The resulting nanocomposite gel polymer electrolyte structure was characterized using spectroscopic methods. Thermal characteristic properties of polymeric nanocomposites were investigated by performing differential scanning calorimetry (DSC) and terhmogravimetric analysis (TGA). Conductivity measurements of the materials were obtained between −20 °C and 100 °C at varying temperature intervals. The highest ionic conductivity values were obtained from the SPSU / 0.1 IL and SPSU / 5% Al2O3 / 0.2 IL polymer electrolyte structures as 2.5 x10−4 and 2.06 x10−3 S cm−1 at 100 °C, respectively. The maximum specific capacitance value of 144 F g−1 was obtained from SPSU / 5% Al2O3 / 0.2 IL polymer electrolyte based system at a current density of 1 A g−1. The supercapacitor reached an energy density of 20 Wh kg−1 at a power density of 1028 W kg−1. In addition, the supercapacitor has shown a remarkable capacitance retention with a performance loss of only about 10% after 5000 cycles.

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Imidazolium‐functionalized norbornene ionic liquid block copolymer and silica composite electrolyte membranes for lithium‐ion batteries

Wang

Zhou

et al. 2017

J of Applied Polymer Sci

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Imidazolium‐functionalized norbornene and benzene‐functionalized norbornene were synthesized and copolymerized via ring‐opening metathesis polymerization to afford a polymeric ionic liquid (PIL) block copolymers {5‐norbornene‐2‐methyl benzoate‐block‐5‐norbornene‐2‐carboxylate‐1‐hexyl‐3‐methyl imidazolium bis[(trifluoromethyl)sulfonyl]amide [P(NPh‐b‐NIm‐TFSI)]} with good thermal stability. On this basis, the solid electrolyte, P(NPh‐b‐NIm‐TFSI)–lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), through blending with LiTFSI, and the nanosilica composite electrolyte, P(NPh‐b‐NIm‐TFSI)–LiTFSI–SiO2, through blending with LiTFSI and nanosilica, were prepared. The effects of the PILs and silica compositions on the properties, morphology, and ionic conductivity were investigated. The ionic conductivity was enhanced by an order of magnitude compared to that of polyelectrolytes with lower PIL compositions. In addition, the ionic conductivity of the nanosilica composite polyelectrolyte was obviously improved compared with that of the P(NPh‐b‐NIm‐TFSI)–LiTFSI polyelectrolyte and increased progressively up to a maximum with increasing silica content when SiO2 was 10 wt % or lower. The best conductivity of the P(NPh‐b‐NIm‐TFSI)–20 wt % LiTFSI–10 wt % SiO2 composite electrolyte with 7.7 × 10−5 S/cm at 25 °C and 1.3 × 10−3 S/cm at 100 °C were obtained, respectively. All of the polyelectrolytes exhibited suitable electrochemical stability windows. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44884.

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Enhanced ionic conductivity in borate ester plasticized Polyacrylonitrile electrolytes for lithium battery application

Cited by 32 publications

References 31 publications

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

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

Fabrication of Al₂O₃/IL‐Based Nanocomposite Polymer Electrolytes for Supercapacitor Application

Imidazolium‐functionalized norbornene ionic liquid block copolymer and silica composite electrolyte membranes for lithium‐ion batteries

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Enhanced ionic conductivity in borate ester plasticized Polyacrylonitrile electrolytes for lithium battery application

Cited by 32 publications

References 31 publications

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

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

Fabrication of Al2O3/IL‐Based Nanocomposite Polymer Electrolytes for Supercapacitor Application

Imidazolium‐functionalized norbornene ionic liquid block copolymer and silica composite electrolyte membranes for lithium‐ion batteries

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Fabrication of Al₂O₃/IL‐Based Nanocomposite Polymer Electrolytes for Supercapacitor Application