Constructing stable ordered ion channels for a solid electrolyte membrane with high ionic conductivity by combining the advantages of liquid crystal and ionic liquid

Wang, Shi; Zeng, Qinghui; Wang, Ailian; Liu, Xu; Chen, Jie; Wang, Zhinan; Zhang, Liaoyun

doi:10.1039/c8ta09489f

Cited by 56 publications

(33 citation statements)

References 45 publications

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“…In CSEs, polyethylene oxide (PEO) is usually selected as the matrix due to its ability to dissolve metal salts, electrochemical stability, low cost, and environmental friendliness. Unfortunately, PEO is easy to crystallize at room temperature, which leads to low ionic conductivity and limits its practical application [15,16]. Many ways have been tried to solve these problems, including polymer copolymerization and crosslinking, adding plasticizers, and blending with inorganic fillers.…”

Section: Introductionmentioning

confidence: 99%

MOF-derived multifunctional filler reinforced polymer electrolyte for solid-state lithium batteries

Zhang

Gao

et al. 2021

Journal of Energy Chemistry

105

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Section: Introductionmentioning

confidence: 99%

MOF-derived multifunctional filler reinforced polymer electrolyte for solid-state lithium batteries

Zhang

Gao

et al. 2021

Journal of Energy Chemistry

105

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“…[ 8 ] The fatty side chains enhance the fluidity of molecules in LC state, and the aromatic conjugated chemical structures can be stacked on each other, therefore the LC molecules can self‐assemble to form ordered carrier channels which lead to high conductivity. [ 9,10 ] Pc is a kind of macrocyclic conjugated compound with 18 delocalized electrons, which is composed of four benzoindole cores connected by nitrogen bridges. Because of its unique chemical and thermal stability, it has important applications in information storage, nonlinear optics, or photoelectric conversion.…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembly and Molecular Electrical Switching Property of Phthalocyanine‐Based Liquid‐Crystalline Poly(Styrene Sulfonic Acid) Compounds

Kong

Tang

Chang

et al. 2021

Macro Materials & Eng

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A series of phthalocyanine‐based liquid‐crystalline poly(styrene sulfonic acid) compounds (LCPCs) are synthesized using cholesterol, dicarboxylic acid, amino‐ zinc phthalocyanine, and polystyrene sulfonic acid. The chemical structure, thermal property, liquid‐crystalline behavior, direct current conductivity, and temperature‐controlled molecular electronic switch property are investigated by use of various techniques. The LCPCs show both columnar phase (Colh) induced by the phthalocyanine moieties and nematic discotic (Nd) phase formed by the collapse of the columnar phase structure. The temperature‐dependent conductivity of the LCPCs is associated with the activation energy evaluated by Broido's graphical procedure according to the thermogravimetric analytical curves. The LCPCs show low conductivity derived from 1D charge migration through phthalocyanine cores in the colh phase, but exhibit high conductivity due to 3D ionic charge transport in the Nd phase. A temperature‐controlled molecular electronic switch is fabricated on the basis of the temperature‐dependent conductivity property, which can be useful for some potential applications.

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“…channels using a nematic liquid crystal ionic liquid (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide) and LiTFSI (Figure 5b,c). [48] The free-standing SPE film with highly ordered layered nanostructures acted as a highly ordered template to provide ion channels, and it had a very high σ (2.14 × 10 −2 S cm −1 at room temperature) and very good stability with lithium. Zhang et al prepared an SPE with a selfassembling discotic liquid crystal-based six-arm star polymer (Figure 5d).…”

Section: Polymersmentioning

confidence: 99%

Progress in Solid Polymer Electrolytes for Lithium‐Ion Batteries and Beyond

Han

Liu

et al. 2021

Small

176

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the volume expansion of electrodes, poor impact resistance, high potential for gas production, easy corrosion of aluminum foil and oxidation of copper foil. Liquid electrolytes show poor compatibility with electrodes in some potential high-energy batteries. Other drawbacks of liquid electrolytes derive from the unstable longterm life cycle and poor performance in restraining the growth of lithium dendrites in LIBs, especially when lithium metal is used as an anode. Some potential cathodes, including transition metals, polysulfides in sulfur electrodes, and organic electrodes, tend to dissolve in liquid electrolytes, hindering the development of next-generation batteries. [1][2][3][4] Solid polymer electrolytes (SPEs) are considered a prospective approach to solving the above problems. [4] An alkali metal salt and polymer host, which plays a role as a solid matrix, form SPEs without additional organic liquid solvents. [5] Several outstanding advantages have been produced by SPEs over conventional liquid electrolytes such as low flammability, low electrolytes leakage, safety, high flexibility, and high stability between the electrode and electrolytes, etc. [6] Furthermore, SPEs possess excellent advantages over inorganic solid electrolytes, such as flexibility, light weight, ease of processing, suitability for large-scale manufacturing, and strong adhesion to electrodes. More importantly, the flexibility of polymer structural design and the suitability of various lithium salts and functional fillers provide many options for SPE design. [6][7][8] Among SPEs, high molecular weight polyethylene oxide (PEO)-based SPEs are commonly considered to be the finest candidates for polymer matrices due to their solvation power and complexation ability. [9] Wright et al. discovered that PEO can be used as a conductive matrix for alkali metal ions. [10,11] In 1983, Armand et al. reported the first PEO/Li + dry SPE system for LIBs (≈10 −4 S cm −1 at 40-60 °C). [12] Their pioneering work constituted a major breakthrough in the research on solid-state lithium-ion batteries (SSLIBs). Since then, polymers have attracted widespread attention as electrolytes for rechargeable SSLIBs. [8,[12][13][14] In LIBs, the SPE acts as an ion-conducting medium operating between the anode and cathode, and it plays the role of an electronically insulating separator. SPEs that meet these criteria should have six characteristics. [5][6][7][8] i) High ionic conductivity (σ) and high Li + transference numbers (t Li+ ). The polymers of SPEs must be able to dissolve sufficient amounts of lithium Solid-state polymer electrolytes (SPEs) for high electrochemical performance lithium-ion batteries have received considerable attention due to their unique characteristics; they are not prone to leakage, and they exhibit low flammability, excellent processability, good flexibility, high safety levels, and superior thermal stability. However, current SPEs are far from commercialization, mainly due to the low ionic conductivity, low Li + transference number (t Li+ ), ...

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Constructing stable ordered ion channels for a solid electrolyte membrane with high ionic conductivity by combining the advantages of liquid crystal and ionic liquid

Abstract: Ordered ion channels were constructed using liquid crystal, while ionic liquid was inserted into the channels for fast transport ions.

Cited by 56 publications

References 45 publications

MOF-derived multifunctional filler reinforced polymer electrolyte for solid-state lithium batteries

MOF-derived multifunctional filler reinforced polymer electrolyte for solid-state lithium batteries

Self‐Assembly and Molecular Electrical Switching Property of Phthalocyanine‐Based Liquid‐Crystalline Poly(Styrene Sulfonic Acid) Compounds

Progress in Solid Polymer Electrolytes for Lithium‐Ion Batteries and Beyond

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