Ionic Conductivity at Low Temperature in Polymer Electrolyte

A composite electrolyte for all-solid-state lithium-ion batteries that improves charge and discharge efficiency through a novel sulfide-based electrolyte system. The electrolyte combines a lithium salt with a sulfide electrolyte, where the sulfide electrolyte contains lithium salts such as LiTFSI, LiFSI, and Li(CF3sO2)3C. This composition enhances the electrolyte's ionic conductivity while maintaining the sulfide's thermal stability and solid-state characteristics. The electrolyte's performance is demonstrated through comprehensive testing, including high-pressure testing and extensive cycle testing.

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Coated binder material for solid-state batteries that improves performance by increasing lithium conductivity inside the battery. The coated binder has an ionic plastic crystal and lithium salt coated on its surface. This provides lithium conduction pathways in the battery beyond just the binder's binding function. The coated binder is prepared by wet coating techniques where the ionic crystal and lithium salt dissolve in solvent while the binder remains insoluble. After evaporating the solvent, the coated ionic crystal and lithium salt precipitate on the binder surface. This creates a coated binder with lithium conduction beyond the binder's binding function, reducing interface impedance in the battery.

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Polyionic liquid electrolyte with charges far from the main chain that enables improved lithium-ion battery performance. The electrolyte comprises a heterocyclic compound with polar groups that form a flexible, long-chain structure with polar segments. This structure enables enhanced ion migration through the polymer chain network, particularly for lithium ions, while maintaining the electrolyte's charge separation capabilities. The electrolyte can be used in lithium-ion batteries to improve performance characteristics such as charge/discharge efficiency, cycle life, and interface resistance.

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A sulfide solid electrolyte elastic membrane for lithium-ion batteries that combines high mechanical strength and thermal resistance. The membrane is prepared through a novel hot solution pouring and pressurized in-situ polymerization process, where sulfide powders are selectively polymerized in a liquid electrolyte solution containing cross-linking agents and initiators. This method enables the formation of a uniform, elastic membrane with enhanced mechanical properties without compromising lithium ion conductivity. The resulting membrane exhibits superior thermal stability, mechanical strength, and cycle life compared to conventional solid electrolyte membranes, making it suitable for high-pressure applications in lithium-ion batteries.

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Sodium battery composite solid electrolyte for all-solid-state batteries that addresses the limitations of conventional polymer-based electrolytes. The electrolyte combines a polymer matrix with an inorganic phase, specifically zinc phosphate, which enhances ionic conductivity while maintaining mechanical integrity. The zinc phosphate phase prevents dendrite growth and improves interface compatibility, while the polymer matrix maintains flexibility and conductivity. The composite electrolyte achieves high ionic conductivity, improved mechanical properties, and enhanced safety performance compared to conventional polymer-based electrolytes.

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Solid-state battery cell comprising an all-solid-state battery with a solid electrolyte, positive and negative electrodes, and a current collector, wherein the solid electrolyte is made from an alternating copolymer and its preparation method, and the positive and negative electrodes are made from a current collector material and their preparation method. The solid electrolyte contains a polymer electrolyte that exhibits conductivity close to that of liquid electrolytes at room temperature, while the positive and negative electrodes contain active materials, conductive agents, and binders.

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Organic ion plastic crystal doped composite electrolyte membrane for lithium-ion batteries, comprising an organic ion plastic crystal doped composite electrolyte coating and a base film. The membrane combines the advantages of inorganic solid-state electrolytes and polymer solid-state electrolytes, with high ionic conductivity, chemical stability, and electrical properties. The coating is prepared through a combination of ultrasonic dispersion and magnetic stirring, with specific formulations of lithium salts and inorganic particles. The resulting membrane exhibits excellent interface stability between electrolyte and electrode, with no obvious lithium dendrites on the surface of lithium metal negative electrode after cycle charge and discharge.

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Solid-state lithium battery with enhanced safety features through the incorporation of a lithium salt-based electrolyte interface layer. The layer, comprising an ion-conducting plastic crystal, a lithium salt, and a polymer matrix, prevents electrodeposition of metallic lithium during charging by forming a solid electrolyte interface. This interface layer protects against internal short circuits while maintaining high energy density. The lithium salt-based electrolyte enables stable lithium ion transport in the solid electrolyte, while the plastic crystal maintains its ionic conductivity.

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Polymer electrolyte with enhanced ionic conductivity and mechanical properties, achieved through a novel polymer matrix composition. The electrolyte comprises a polymer matrix with an ammonium-based repeating unit and an ionic liquid, where the polymer matrix contains a specific weight fraction of the ionic liquid. The polymer matrix maintains superior mechanical strength despite a low glass transition temperature, while maintaining high ionic conductivity and stability. The electrolyte's ionic conductivity reaches up to 2.60 mS/cm, with metal salt content ranging from 40% to 60%.

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A high-conductivity semi-interpenetrating polymer electrolyte containing an ionic liquid cross-linking agent. The electrolyte combines a polymer network with an ionic liquid cross-linking agent to form a solid electrolyte membrane. The cross-linking agent enables the formation of a lithium ion transport channel through its double bond structure, while the polymer network provides mechanical support. This novel electrolyte combines the benefits of both polymer electrolytes and ionic liquids, offering enhanced conductivity and stability at room temperature.

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Solid-state battery electrode with enhanced ion transport and interface properties. The electrode comprises active material particles, conductive additives, a uniform and dense polyionic liquid-based solid electrolyte, and a current collector. The solid electrolyte is produced through in-situ polymerization of an ionic liquid monomer with a polymer monomer having reactive active groups. The resulting copolymer electrolyte is uniformly coated on the surface of active material particles, enabling efficient ion conduction between particles while improving interface contact.

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Polymer electrolyte lithium battery with enhanced safety and efficiency, comprising a polymer electrolyte prepared by blending [BMIM]BF4 with PC and FEC. The electrolyte achieves high ionic conductivity and non-flammability through synergistic effects of these components, enabling safe and efficient lithium-ion battery applications.

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Ionic conduction material in the form of a polymeric gel, its production process and application in electrochemical devices for energy applications. The material comprises a natural polymer grafted with an ionic liquid (IL) precursor, which undergoes immediate gelation upon dissolution. This IL-grafted polymer exhibits high ionic conductivity compared to conventional polymeric gels, with conductivity values up to 10 S/m, making it suitable for energy storage applications.

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Imidazole-based polyionic liquid electrolyte with enhanced ionic conductivity and self-repair properties for lithium-ion batteries. The electrolyte comprises imidazole-based copolymer chains with flexible acrylate groups, combined with lithium salts and additives. The acrylate groups enable controlled chain flexibility, while the imidazole backbone provides ionic conductivity. The lithium salt mixture ensures reliable ionic conductivity while maintaining the electrolyte's thermal stability. The electrolyte's self-repair capabilities are achieved through a novel copolymerization process that incorporates acrylic ester monomers. This approach enables the electrolyte to maintain its ionic conductivity and mechanical properties even at elevated temperatures, making it suitable for lithium-ion battery applications.

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Solid electrolyte for lithium metal batteries that prevents dendrite growth and maintains high-temperature safety. The electrolyte layer is positioned between the lithium metal electrode and the positive electrode, with the second electrolyte layer situated between the positive electrode and the solid electrolyte membrane. This configuration ensures uniform stress distribution and prevents short circuits, while maintaining the required thickness and density for high-energy density applications.

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All-solid-state battery with enhanced energy density through optimized electrode architectures. The battery comprises a positive electrode, a negative electrode with a negative electrode active material layer, and a solid electrolyte layer between them. The negative electrode active material layer comprises an oxide with a LISICON crystal structure, while the solid electrolyte layer contains an oxide with a garnet crystal structure. This configuration enables the battery to achieve higher energy density compared to conventional solid-state batteries by leveraging the specific properties of the LISICON and garnet oxides.

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Organic-inorganic-ionic liquid composite solid electrolyte for lithium-ion batteries and supercapacitors, prepared through in-situ polymerization of an organic-inorganic-ionic liquid. The composite solid electrolyte combines a polymer backbone with inorganic nanoparticles, uniformly dispersed within the polymer matrix. This novel approach addresses the limitations of traditional polymer electrolytes by achieving high ionic conductivity, low interface impedance, and improved mechanical properties through the controlled incorporation of inorganic particles. The resulting composite electrolyte exhibits enhanced thermal stability, flame retardancy, and cycle stability, making it suitable for solid-state lithium metal batteries and other applications requiring high-performance solid-state electrolytes.

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Ionic liquid compound with perfluorosulfonimide anion, prepared through a novel method involving direct substitution of the perfluorosulfonimide anion with a halide containing a gamma cation. The compound is prepared by reacting a perfluorosulfonimide anion with a halide containing a gamma cation under ion exchange reaction conditions, resulting in a compound with a unique structure. The method enables the preparation of perfluorosulfonimide-based ionic liquids with improved conductivity and lithium migration properties.

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Ionic liquid polymer for lithium-ion batteries with improved conductivity and migration characteristics. The polymer contains a perfluorosulfonamide anion with weak coordination, which enables enhanced conductivity and lithium ion mobility compared to conventional anions. The polymer structure enables a micro-liquid phase that facilitates efficient ion migration, while maintaining the anion's stability and preventing aggregation. The polymer solid electrolyte can be prepared through polymerization of the ionic liquid monomer, offering a unique combination of conductivity, stability, and migration characteristics that address the challenges of traditional lithium-ion electrolytes.

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A modified layer for solid-state lithium batteries that improves interface stability and ionic conductivity between the electrode and electrolyte. The layer comprises a polymer formed by alkenyl-functionalized ionic liquid monomer, lithium salt, and photoinitiator, with specific mass ratios optimized for enhanced conductivity and interface compatibility. The layer is applied between the electrode and electrolyte, providing a uniform interface that enhances charge transfer and reduces interface impedance.

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