Lithium-Containing Zwitterionic Poly(Ionic Liquid)s as Polymer Electrolytes for Lithium-Ion Batteries

Lü, Fei; Gao, Xinpei; Wu, Aoli; Sun, Na; Shi, Lijuan; Zheng, Liqiang

doi:10.1021/acs.jpcc.7b06242

Cited by 65 publications

(46 citation statements)

References 56 publications

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“…A few studies have sought to clarify the fundamental mechanisms underlying ion transport in polyZIs . In this context, we note a study reported by Ohno and coworkers, which highlighted a surprising impact of polymer architecture on ionic conductivity .…”

Section: Introductionmentioning

confidence: 75%

“…Their ionic properties and hydrophilicity have made them targets for use in organic electronics, catalysis, battery electrolytes, surfactants, drug‐delivery, and antifouling coatings, among other applications . ZI‐incorporated polymers (polyZIs) have also been investigated as novel materials for chromatography, drug‐delivery, self‐assembled microstructures, and battery electrolytes …”

Section: Introductionmentioning

confidence: 99%

“…The addition of ZIs to electrolyte formulations also purportedly improves cycling performance and energy density by increasing Coulombic efficiencies for lithium plating/stripping reactions . Furthermore, tuning the interaction strengths between lithium, the counterion, and the ZI groups has been shown to influence conducting ion concentration, lithium‐transference number, and ionic conductivity …”

Section: Introductionmentioning

confidence: 99%

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Ion transport mechanisms in salt‐doped polymerized zwitterionic electrolytes

Keith

Ganesan

2020

Journal of Polymer Science

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Polyzwitterions (polyZIs), macromolecules with repeating ampholytic monomers, are a novel class of materials with attractive properties for battery electrolytes. In this study, we probe the ion transport characteristics and underlying mechanisms in two salt‐doped (Li+‐TFSI−) polyZIs of similar composition with contrasting zwitterion (ZI) ionic organization: pendant monomers organized via backbone‐anion‐cation (B‐ZI−‐ZI+, Motif B) and backbone‐cation‐anion (B‐ZI+‐ZI−, Motif C). Within both Motifs B and C, the counterion of the pendant‐end ZI moiety shows higher mobility. Similarly, when comparing Li+ or TFSI− across motifs, it is seen that the respective pendant‐end counterion possesses higher mobility than its backbone‐adjacent counterpart. Furthermore, when comparing counterions to same‐position ZI moieties, TFSI− is seen to possess higher mobility than Li+ in each case, a result rationalized by invoking the lower interaction strength between the TFSI− and ZI+. Analysis of ion‐transport mechanisms demonstrate that the mobility of countercharges to the pendant‐end ZI moiety correlates with the ion‐association relaxation timescale, similar to ideas noted in polymerized ionic liquids in past studies. However, the mobility of countercharges to the backbone‐adjacent ZI moiety is shown to be correlated with a cage relaxation time, which incorporates the combined effects of frustrated motion due to the presence of the polymer backbone and pendant‐end ZI moiety and the higher mobility in a population of lightly ZI‐coordinated ions. © 2020 Wiley Periodicals, Inc. J. Polym. Sci. 2020, 58, 578–588

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ion transport mechanisms in salt‐doped polymerized zwitterionic electrolytes

Keith

Ganesan

2020

Journal of Polymer Science

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“…[221] This zwitterion-based IL showed high thermal stability with decomposition temperature around 300 °C. [223] The zwitterion-based IL was prepared from imidazolium-type zwitterion 3-(1-vinyl-3-imidazolio)-propanesulfonate (VIPS, www.advancedsciencenews.com Scheme 8) and LiTFSI. [222] The mixtures were composed of an IL 1-butyl-1-methyl-pyrrolidinium bis(trifluoromethyl-sulfonyl)imide (BMP-TFSI), a Li salt (LiTFSI), and different concentrations of zwitterions, 1-(1-butylpyrrolidinium)butane-4-sulfonate (ZN) (Scheme 8) or 1-(1-trin-butylphosphonium)butane-4-sulfonate (ZP) (Scheme 8).…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…[221] To gain more insight about the transportation of ions in the ternary mixture (IL/Li salt/zwitterions), the effect of sulfonate-based zwitterions addition on different properties (thermodynamic, ion transport and electrochemical) of ionic liquid/Li-TFSI mixtures was investigated. [223] This IL can be applied to sustain mechanical strength and to form Li + rich channels for the transportation of Li + . The ternary mixtures demonstrated an anodic stability up to 5-6 V versus Li + /Li.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Zwitterions for Organic/Perovskite Solar Cells, Light‐Emitting Devices, and Lithium Ion Batteries: Recent Progress and Perspectives

Islam

Pervaiz

et al. 2019

Advanced Energy Materials

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are covalently bonded and their unique characteristics enable them to demonstrate special performance in applications and distinguish them from other conventional organic salts. [12][13][14] Recently, a significant attention has been paid to the use of zwitterions owing to their solubility in polar solvents for solution processing, [15][16][17] and dipole formation for the transfer of carriers [18][19][20] and ions. [21][22][23] Zwitterions have emerged as alternatives to the widely used building blocks such as conventional ionic groups, for developing new functional materials. The presence of both negative and positive ions in the same molecule enables zwitterions to develop interfacial dipole. The ability of zwitterions to develop interfacial dipole provides a new pathway to utilize them as interfacial layer in optoelectronic devices, including organic solar cells (OSCs), perovskite solar cells (PVSCs), and organic light-emitting devices (OLEDs), as well as electrolyte additives for energy devices such as lithium ion batteries (LIBs).It is well known that the ability to transport the charge carriers between the electrodes and organic layers is very crucial to obtain highly efficient electronic devices. [24] A mismatch between the energy levels of organic layers and inorganic electrodes leads to the generation of an energy barrier that hampers the extraction or injection of charge carriers. [25] To get rid of this obstacle, an interlayer between the electrodes and organic layers is applied to facilitate the transfer of charges in organic devices. In OLEDs, interlayers are used to enhance charge injection and reduce the height of Schottky barrier. While in the case of OSCs and PVSCs, apart from the enhancement in charge injection, they also play an important role to increase the built-in electric field across the active layer, ensuring efficient extraction of photogenerated charge carriers. [26][27][28][29][30] Therefore, the design and development of effective interlayer materials for interfacial modification are crucial for high-performance electronic devices. Recently, some significant advances have been demonstrated by applying an interfacial layer between the electrodes and organic layers, resulting in power conversion efficiencies (PCEs) to exceed 14% for single-junction OSCs by choosing appropriate photoactive layer. [31,32] Among different interlayer materials used so far, zwitterionic materials have been proved Zwitterions, a class of materials that contain covalently bonded cations and anions, have been extensively studied in the past decades owing to their special features, such as excellent solubility in polar solvents, for solution processing and dipole formation for the transfer of carriers and ions. Recently, zwitterions have been developed as electrode modifiers for organic solar cells (OSCs), perovskite solar cells (PVSCs), and organic light-emitting devices (OLEDs), as well as electrolyte additives for lithium ion batteries (LIBs).With the rapid advances of zwitterionic materials, high-performan...

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The Application of Polymer Nanocomposites in Energy Storage Devices

Nie

Liu

et al. 2021

Polymer Nanocomposite Materials

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Lithium-Containing Zwitterionic Poly(Ionic Liquid)s as Polymer Electrolytes for Lithium-Ion Batteries

Cited by 65 publications

References 56 publications

Ion transport mechanisms in salt‐doped polymerized zwitterionic electrolytes

Ion transport mechanisms in salt‐doped polymerized zwitterionic electrolytes

Zwitterions for Organic/Perovskite Solar Cells, Light‐Emitting Devices, and Lithium Ion Batteries: Recent Progress and Perspectives

The Application of Polymer Nanocomposites in Energy Storage Devices

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