Microporous PVDF–PMMA Blend-Based Gel Polymer Electrolyte for Electrochemical Applications: Effect of PMMA on Electrochemical and Structural Properties

Verma, Harshlata; Mishra, Kuldeep; K., D.

doi:10.1007/s11664-021-09314-8

Cited by 13 publications

(4 citation statements)

References 60 publications

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“…This migration gives rise to polarization effects, causing a reduction in the number of available charge carriers and partially compensating for the external field. Consequently, this leads to a decrease in conductivity. − Within the intermediate-frequency range between f EP and f σ , the conductivity is predominantly dictated by the motion of the ions, resulting in a plateau in the conductivity profile. At higher frequencies exceeding f σ , ions locally vibrate, contributing to the AC conductivity.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Ion Conductivity in a Poly(ionic liquid)-Grafted Nanoparticle-Based Single-Ion Conductor

Li,

Bulucu,

Chou

et al. 2024

Macromolecules

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In contemporary batteries, solid polymer electrolytes are widely prioritized for their easy processability and safety; however, they suffer from limited ionic conductivity. Polymerized ionic liquids (PILs) counter this shortcoming by combining mechanical properties of polyions while allowing the counterions (anions) to maintain their free mobility. Poly(1-vinylimidazolium bistriflimide)-grafted iron oxide (Fe 3 O 4 ) nanoparticles with different chain lengths were synthesized to investigate the effect of grafting the PIL chains on the ionic conductivity. The long-range Coulombic interactions among PIL-grafted chains assist the formation of nanoparticle strings that percolate even at low particle concentrations. Within the percolated network, the connectivity of polycation grafts enabled effective ladder-like ion hopping of TFSI − anions and the cooperative ion motion in nanoparticle networks. The self-assembling nature of nanoparticles, when grafted with polymer electrolyte chains, increased ionic conductivity by promoting the facilitated transport of counterions. Upon incorporating ionic liquid to the PIL-grafted nanoparticles, the presence of ionic clustering was observed to decrease conductivity. Our results demonstrate that the graft chain confinement and particle percolation are essential factors for single-ion conductor design.

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Section: Resultsmentioning

confidence: 99%

Enhanced Ion Conductivity in a Poly(ionic liquid)-Grafted Nanoparticle-Based Single-Ion Conductor

Li,

Bulucu,

Chou

et al. 2024

Macromolecules

View full text Add to dashboard Cite

show abstract

“…The study concludes that the developed NGPE system is appropriate for electrochemical devices; however, further investigation is required to determine the appropriate electrode materials for constructing a system with minimal losses. Verma et al 103 blended a PVDF−PMMA polymer with a NaBF 4 −BMIMBF 4 liquid electrolyte to create a porous polymer electrolyte (PPE) system through phase inversion. The resulting membranes exhibited favorable structural and electrochemical properties.…”

Section: Pmma-based Gpesmentioning

confidence: 99%

“…Copyright 2020 Springer Nature. SEM micrographs from the front and cross-section of PPM0 (b-1 and b-2), PPM05 (b-3 and b-4), PPM10 (b-5 and b-6), and PPM25 (b-7 and b-8) . Reproduced with permission from ref .…”

Section: Gpes In Na–s Batteriesmentioning

confidence: 99%