Examining ionicity and conductivity in poly(methyl methacrylate) containing imidazolium-based ionic liquids

Li, Ruhao; Feng, Yong; Akcora, Pinar

doi:10.1016/j.molliq.2023.121897

Cited by 3 publications

(7 citation statements)

References 48 publications

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“…Activation energies of dissipation factor maxima E a,tanδ describe the motion of ion clusters. 8 The energies of ionic conductivity E a,σ are very close to E a,tanδ , suggesting that the overall ionic conductivity is dominated by the motion of ion clusters (Table 3). The activation energies of electrode polarization E a,EP , which correspond to long-range ion migration, are significantly lower than those of the other events.…”

Section: ■ Experimental Sectionmentioning

confidence: 75%

“…Both chemicals were purchased from Fisher Scientific. The protocol was slightly modified from the previously reported procedures. , Due to the superacidity, deliquescence, and fuming of solid HTFSI, 0.4 g/mL HTFSI/acetonitrile (ACN) solution was prepared in a glovebox filled with argon . The HTFSI/ACN solution was transferred from glovebox to chemical hood, and VIm was added dropwise to solution in an ice bath with vigorous magnetic stirring.…”

Section: Methodsmentioning

confidence: 99%

“…E a,σ is unchanged before and after including HMIm-TFSI while that of maxima of dissipation factor E a,tanδ jumped to ∼30 kJ/mol, close to the value reported for pure HMIm-TFSI, indicative of severe ion caging. 8 Given the linear temperature dependence of σ ion ′ and Λ (Arrhenius behavior), the dominating conduction mechanism with IL inclusion is inferred to be vehicular diffusion.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…In conventional electrolyte systems, the diffusivity differences of anions and cations lead to concentration gradients of ion carriers, limiting the performance of lithium-ion batteries. Single-ion conducting polymer electrolytes are highly promising conducting systems for energy applications. , The mobility of polymer backbone, glass transition temperature, and ion size impact the decoupling of ionic conductivity from segmental dynamics. − In addition, the ion solvation that is facilitated either by cosolvent addition or through preferential interactions between polymer chains and ions enhance the number of mobile (free) charge carriers. − In this study, the ion transport mechanism in ionic liquid (IL)-based polymer hybrids are investigated in solution and with the addition of IL. The underlying particle nanostructures and the polycation chain lengths are examined to explain the ion conductivity, which is unique for the single-ion conductor design.…”

Section: Introductionmentioning

confidence: 99%

“…ILs have been used as electrolytes in energy storage and conversion devices and in biomedicine owing to their unique advantages such as high ion density, negligible vapor pressure, nonflammability, and superior electrochemical and thermal stabilities, − which are essential for sustainability and eco-environmental safety. − Dynamics of ions is often described by the ion cage model (known as Coulombic cage), where ions are trapped within cages formed by neighboring ions, leading to subdiffusion at large length scales. ,− Extensive knowledge on structure and dynamics of ILs , empowers us to design materials based on polymerizable ionic liquids (PILs) with improved ion transport and mechanical properties. PILs are increasingly compelling as they exhibit good chemical and thermal stability, low glass transition temperature, and high charge density .…”

Section: Introductionmentioning

confidence: 99%

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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: ■ Experimental Sectionmentioning

confidence: 75%

Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Covalently Merging Ionic Liquids and Conjugated Polymers: A Molecular Design Strategy for Green Solvent‐Processable Mixed Ion–Electron Conductors Toward High‐Performing Chemical Sensors

Lee,

Shin,

et al. 2024

Adv Funct Materials

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Polymeric mixed ionic–electronic conductors hold great potential for advancing high‐performance organic electronics due to their exceptional electrical conductivity achieved through ion–electron coupling. However, the widespread adoption of these conductors faces obstacles due to their reliance on environmentally harmful solvents during processing and the potential performance degradation under various conditions. In this study, a practical solution to these challenges is proposed by incorporating monomers with ionic liquid‐behaving pendant groups into conjugated polymers. The copolymerization of these charged monomers not only improves solubility in environmentally friendly solvents but also imparts long‐term stability against humidity, high temperatures, and mechanical deformation. The immobilized ion species foster highly selective interactions of these polymers with nitrogen dioxide, paving the way for the development of stretchable sensing devices capable of functioning at exceptionally high temperatures.

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Research Progress on Solid-State Electrolytes in Solid-State Lithium Batteries: Classification, Ionic Conductive Mechanism, Interfacial Challenges

Ai,

Wu,

Wang

et al. 2024

Nanomaterials

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Solid-state lithium batteries exhibit high-energy density and exceptional safety performance, thereby enabling an extended driving range for electric vehicles in the future. Solid-state electrolytes (SSEs) are the key materials in solid-state batteries that guarantee the safety performance of the battery. This review assesses the research progress on solid-state electrolytes, including polymers, inorganic compounds (oxides, sulfides, halides), and organic–inorganic composites, the challenges related to solid-state batteries in terms of their interfaces, and the status of industrialization research on solid-state electrolytes. For each kind of solid-state electrolytes, details on the preparation, properties, composition, ionic conductivity, ionic migration mechanism, and structure–activity relationship, are collected. For the challenges faced by solid-state batteries, the high interfacial resistance, the side reactions between solid-state electrolytes and electrodes, and interface instability, are mainly discussed. The current industrialization research status of various solid electrolytes is analyzed in regard to relevant enterprises from different countries. Finally, the potential development directions and prospects of high-energy density solid-state batteries are discussed. This review provides a comprehensive reference for SSE researchers and paves the way for innovative advancements in regard to solid-state lithium batteries.

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Examining ionicity and conductivity in poly(methyl methacrylate) containing imidazolium-based ionic liquids

Cited by 3 publications

References 48 publications

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

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

Covalently Merging Ionic Liquids and Conjugated Polymers: A Molecular Design Strategy for Green Solvent‐Processable Mixed Ion–Electron Conductors Toward High‐Performing Chemical Sensors

Research Progress on Solid-State Electrolytes in Solid-State Lithium Batteries: Classification, Ionic Conductive Mechanism, Interfacial Challenges

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