High Ionic Conductivity Electrolyte Materials for EV Batteries

Electrolyte composition, electrolyte, and battery with improved ionic conductivity for lithium-ion batteries. The electrolyte composition contains an ion-conducting inorganic solid electrolyte, a polymer with metal ion conduction ability, and an ionic liquid. The solid electrolyte can be an oxide, sulfide, hydride, or halide containing alkali and alkaline earth metals. The polymer has anionic functional groups with metal ions and anion-trapping functional groups. The composition has high ionic conductivity, low activation energy, and low dynamic hardness compared to solid electrolytes alone. The composite electrolyte enables higher ionic conductivity for better battery performance.

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Solid electrolyte for all-solid-state batteries that has both high ionic conductivity and electrical conductivity. The electrolyte contains a mixed conductive polymer and lithium salt. The mixed conductive polymer has ionic and electronic conduction properties, allowing it to simultaneously transport lithium ions and electrons. This enables high ionic and electronic conductivity in the solid electrolyte.

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Solid electrolyte for all-solid-state batteries with improved ionic and electronic conductivity for high performance all-solid-state batteries. The electrolyte is a composite of a mixed conductivity polymer and a lithium salt. The mixed conductivity polymer has both ionic and electronic conductivity. The lithium salt provides the needed lithium ions for battery operation. The optimized ratio of mixed conductivity polymer to lithium salt provides the balance of ionic and electronic conductivity needed for all-solid-state batteries. The electrolyte can be made by coating a mixed solution of the polymer and salt on a substrate and drying it to form the solid electrolyte membrane.

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Lithium battery electrolyte with improved dendrite growth inhibition compared to conventional electrolytes. The electrolyte has two layers: a first layer close to the negative electrode with higher ion conductivity and a second layer farther away with lower ion conductivity. The higher conductivity near the negative electrode prevents dendrite growth. The lower conductivity farther away reduces short circuits. This two-layer electrolyte design allows tuning conductivity gradients for dendrite suppression and protection.

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Solid electrolyte material for all-solid-state lithium batteries that can provide high lithium ion conductivity and stability for direct contact with lithium metal anodes. The solid electrolyte is made by a method involving reacting Li, S, phosphorus sulfides, metal halides, and optionally metal sulfides to form a composition with general formula LixMyzPSx, where x, y, and z are molar ratios. The method involves heating the reactants to form the solid electrolyte. The solid electrolyte can be used as a cathode, anode, or separator component in all-solid-state lithium batteries.

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A solid-state lithium battery with improved ionic conductivity for use in solid-state lithium batteries. The battery uses a solid electrolyte material with composition derived from Li65P025Si025Ge025Sb025S5. The electrolyte material has high lithium ion conductivity when prepared by ball milling and natural cooling. The solid electrolyte can be used as a component in battery cathodes, anodes, and separators. The solid-state battery structure provides advantages like eliminating the need for liquid electrolytes, improving safety and cycling stability, and enabling higher energy densities compared to conventional liquid electrolyte batteries.

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A lithium battery design with improved safety and energy density by using high-concentration lithium salt and ionic liquid electrolytes in the battery's membrane-electrode assembly (MEA). The MEA contains a high-lithium salt electrolyte in the cathode and a composite separator with solid electrolyte and ionic liquid. This prevents lithium plating and improves cycle life compared to using just liquid electrolytes. The solid electrolyte separator prevents solid-state electrolyte impregnation into the electrodes, but the ionic liquid electrolyte allows better lithium mobility. This balance between liquid and solid electrolytes improves safety and performance.

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Solid-state lithium-ion battery with improved conductivity and method of manufacturing it. The battery uses a solid electrolyte instead of the flammable liquid electrolytes in conventional lithium-ion batteries. The solid electrolyte is made by coating a special composite layer on the battery electrodes. The composite layer contains modified zeolite, modified diatomite, sodium lignosulfonate, graphene oxide, and a binder. This composite improves the conductivity of the solid electrolyte compared to traditional solid electrolytes.

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Lithium ion battery with improved safety and performance by using a solid electrolyte instead of the flammable liquid electrolyte. The solid electrolyte is a lithium ion solid electrolyte membrane made by mixing ionic liquid, polymer, and lithium salt in specific ratios. The solid electrolyte has higher room temperature ionic conductivity compared to conventional solid polymer electrolytes, enabling higher power operation at room temperature. The solid electrolyte is prepared by dissolving the components in solvent, casting into a film, and drying.

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Solid electrolyte materials for all-solid-state lithium batteries that have high lithium ion conductivity and stability with lithium metal anodes. The solid electrolytes have compositions containing Li, Sb, S, and Cl, Br, or I substituents. The electrolytes are prepared by heat treating mixtures of precursors like Li2S, Sb2S3, LiX, and elemental S or sulfides. The resulting solid materials have compositions like Li7+xMxSb1-xS6-yXy where 0.05 <= y <= 2. The solid electrolytes can be used in solid state batteries with lithium metal anodes without the need for protective layers. The solid electrolyte materials can also be used as cathode, anode, or separator components in solid state batteries.

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Solid electrolyte for lithium-ion batteries that improves safety by eliminating flammable liquid electrolytes. The solid electrolyte contains an electron transfer complex and ion source. It has high room temperature ionic conductivity >1e-4 S/cm. The electron transfer complex is solid at room temp, has a molecular weight >100g/mol, and an electron affinity >1.3eV. The high isotropic conductivity allows thin solid electrolyte membranes for battery separators. The solid electrolyte can be prepared by mixing the electron transfer complex and ion source.

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Solid-state electrolyte materials and electrochemical cells using them for lithium-ion batteries. The solid electrolytes contain compositions like Li2S, B2S3, LiX (X=Cl, Br, I), Li3PO4, Li4SiO4 to improve ionic conductivity while avoiding issues like crystallization and moisture sensitivity. The electrolyte compositions can be prepared by melting and quenching precursor mixtures. The solid electrolytes are used in cathodes, anodes, and separators for all-solid-state lithium batteries. The solid-state structures provide improved stability, processing, and performance compared to liquid electrolytes in lithium-ion batteries.

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Lithium ion secondary battery with improved safety and ionic conductivity. The battery has a unique electrode assembly design where a solid electrolyte membrane is interposed between the negative and positive electrodes and impregnated with a liquid electrolyte. This configuration improves safety by reducing the risk of thermal runaway and overcharging compared to using just a liquid electrolyte. It also improves ionic conductivity compared to using just a solid electrolyte. The solid electrolyte membrane is pressed into the electrodes to a certain depth. A binder layer between the membrane and electrodes contains an insoluble or low solubility resin in the liquid electrolyte to prevent dissolution. The binder can be patterned with uncoated areas to reduce electrode-electrolyte interfacial resistance. The frame-shaped binder on the electrode edges provides mechanical support.

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Additive materials for lithium-ion batteries to improve ionic conductivity, especially for all-solid-state batteries, by adding high-speed ion conduction channels in the electrode. The additives are solid materials with compositions like LiAxBxInzCl3 or LiAxMxBzF, where A, M, and X are selected elements. These additives can be used in battery electrodes, electrolyte layers, or as standalone additives in the electrode coating process. They provide high-speed ion conduction paths in the electrode to enable faster charging and discharging, especially for all-solid-state batteries that lack the infiltration of liquid electrolytes.

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Solid electrolytes for lithium batteries that enable higher energy density and safer operation compared to current liquid electrolytes. The solid electrolytes contain ionically conductive polymers, ceramics, and dielectrics. The combination of these materials allows high ionic conductivity, low resistance, and chemical stability. The solid electrolytes can be used in all-solid-state batteries to replace the liquid electrolytes in conventional lithium batteries.

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Electrode for all-solid-state lithium ion batteries that improves performance by enhancing lithium ion conductivity at the electrode interfaces. The electrode contains a lithium ion conductive solid electrolyte added to the active material. This reduces the need for an external solid electrolyte layer and improves overall battery performance. The solid electrolyte added to the electrode can be an oxide-based or sulfide-based lithium ion conductive solid electrolyte. However, the oxide-based electrolyte has lower adhesion and conductivity compared to the sulfide-based electrolyte. To balance safety and conductivity, a lower concentration of sulfide-based electrolyte can be used instead of pure sulfide-based electrolyte. This reduces the safety concerns of sulfide-based electrolytes while still enhancing conductivity

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Solid electrolyte membrane for all-solid-state batteries that suppresses lithium dendrite growth. The membrane has an ionic conductivity of 1x10-7 S/cm or more. It contains a dendrite growth inhibiting material derived from metals with lower ionization tendency than lithium or alloys of such metals. The inhibiting material can form self-assembled micelles in a copolymer matrix. This patterned suppression layer is sandwiched between solid electrolyte layers. The high ionic conductivity solid electrolyte membrane prevents dendrite growth between the electrodes.

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Solid electrolyte, preparation method, and solid battery with improved performance. The solid electrolyte is made by coating a polymer ion conductor onto a ceramic-based ion conductor to create a composite electrolyte. This composite electrolyte has high ionic conductivity, low interfacial resistance, and good mechanical properties compared to ceramic electrolytes. The method involves mixing a ceramic-based ion conductor with a polymer ion conductor to form a composite electrolyte slurry. This slurry is coated onto a current collector to make a thin solid electrolyte film. The composite electrolyte is used in a solid-state battery with low porosity positive and negative electrodes to improve performance compared to conventional solid-state batteries.

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A high-capacity, high-output rechargeable battery with improved cycle life. The battery uses an electrode containing a conductive polymer, like polythiophene derivatives, and an electrolyte with an ionic liquid. The ionic liquid content in the electrolyte is between 0.3% and 50% by mass. This composition improves capacity retention compared to conventional batteries while maintaining output characteristics. The ionic liquid aids ionic conduction and prevents electrode degradation. The conductive polymer enables high capacity by facilitating electron transfer.

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Polymer solid electrolyte composition for high ionic conductivity lithium batteries. The composition contains an ionic conductor, a block copolymer with amorphous segments, and an oxidizing agent. The block copolymer improves ionic conductivity compared to homopolymers. The oxidizing agent helps stabilize the polymer electrolyte during battery operation. This allows higher ionic conductivity and better battery performance compared to traditional polymer electrolytes.

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