A Nanocomposite Polymer Electrolyte with High-Temperature Stability for Rechargeable Lithium Batteries

Liu, H. Y.; Xia, Qingbo; Xiao, Qizhen; Lei, Gangtie; Li, Z. H.

doi:10.1007/s13369-014-1180-x

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…The non‐Faradaic process has been confirmed due to an availability of redox peaks and fine rectangular shape of CV curve. Hence, existence of ideal polarized and homogeneous double layer at interface is expected …”

Section: Resultsmentioning

confidence: 99%

“…Ideal triangular shape verified the capacitive nature of cells have been seen in the figure. The charge accumulation at electrode–electrolyte interface, a double layer type has confirmed dependency of energy storage mechanism . For calculation of capacitance by discharge technique change in time (Δ t ) with respect to voltage (Δ V ) at constant current ( i ) is given as

C_{normald} = i Δ t / Δ V

The energy density and power density are also calculated using the following formulas.…”

Section: Resultsmentioning

confidence: 99%

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Comparative Studies on Ionic Liquid and Polymer Ionic Liquid Blend for Application in EDLCs

Tripathi

Bobade

Gupta

et al. 2019

Macromolecular Symposia

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In the present work, comparative studies on two ion-conducting materials, 1-butyl-3-methylimidazolium chloride (BMIMCl) as ionic liquid (IL) and polymer ionic liquid blend, are reported. For the synthesis of polymer ionic liquid blend system, BMIMCl as ionic liquid, PVDF-HFP and acetonitrile as a solvent are used. The different polymer ionic liquid blend is prepared by adopting universal solution cast technique and electrolyte sample is optimized mixing IL in the polymer by maintaining ratio 1:4. The impedance plot is observed by LCR Hi-TESTER. The optimized sample of electrolyte system shows higher ionic conductivity of the order ≈10 −3 S cm −1 . The Arrhenius behavior is found from the temperature dependence conductivity plot, giving activation energy of E a ≈ 0.073 eV. The ionic transference number is calculated for IL and optimized polymer ionic liquid blend. Electrical potential window stability is observed for IL and polymer ionic liquid blend. The fabrication of electrochemical double layer capacitors (EDLCs) is done by sandwiching ion conducting materials between two carbon electrodes. The specific capacitance of EDLC cell: AC ||(PVDF-HFP (20 wt%) + (BMIMCl) (80 wt%)|| AC and AC ||BMIMCl|| AC, gives highest capacitance value ≈116.9 and 96.5 mF cm −2 equivalent to single electrode capacitance 54.57 and 52.6 F g −1 , respectively, by cyclic voltammetry studies at 1 mV s −1 scan rate.

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Section: Resultsmentioning

confidence: 99%