Reduce Interfacial Resistance in Solid State EV Batteries

A lithium-ion battery coating that prevents delamination of active material particles and soot during cell assembly. The coating is applied to the anode and cathode current collector interfaces, forming a seal between the active layer and collector. The coating is created through a photosensitive polymerization process that forms irreversible crosslinked networks upon exposure to UV radiation. The coating protects against particle leaching and soot migration during cell assembly, while maintaining electrical integrity.

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All-solid-state secondary battery with enhanced electrode alignment and lithium metal formation. The battery features a bipolar cell architecture where the positive electrode current collector and negative electrode current collector layers are stacked in a specific orientation. The current collector layers are positioned with an extension portion that intersects the stacking direction, while the negative electrode current collector layer has an extension portion that extends in the opposite direction. This design configuration enables uniform lithium metal deposition on the negative electrode current collector layer during charging, while maintaining alignment between the electrode layers. The battery also incorporates a solid electrolyte layer that is a room-temperature molten salt.

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All-solid-state battery featuring a unique electrode design where active material layers have interdigitated contacts with external electrodes. The battery comprises a current collector, an active material layer with an extension portion, and a solid electrolyte layer interposed between the active material layers. The active material layer's extension portion is positioned adjacent to the external electrode, creating a direct interface while maintaining electrical contact. This design enables high-capacity solid-state batteries with improved interfacial contact and reduced internal resistance.

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All-solid-state battery with uniform interface between electrode and solid electrolyte layer, featuring a continuous solid electrolyte layer that seamlessly connects the electrode. The battery comprises a solid electrolyte layer, an electrode, and a solid electrolyte layer. The solid electrolyte layer is formed by a continuous solid electrolyte material that connects the electrode, while the electrode is made from a solid material such as metal oxide. The solid electrolyte layer is formed through a continuous process that connects the electrode, with the solid electrolyte layer serving as the primary interface between the electrode and the solid electrolyte.

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An all-solid-state battery that operates at room temperature and low pressure, comprising an anode current collector, a buffer layer, a solid electrolyte layer, a cathode active material layer, and a cathode current collector. The buffer layer is an electroconductive material layer with an alloying metal that forms a stable interface with the anode current collector, while the solid electrolyte layer contains a lithium-based solid electrolyte. The cathode active material layer is disposed on the solid electrolyte layer, and the cathode current collector is disposed on the cathode active material layer.

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Electrode for lithium-ion batteries with enhanced durability and performance characteristics. The electrode comprises a current collector and an electrode active material layer containing solid electrolyte particles and conductive particles, where the electrode active material layer is formed on at least one side of the current collector. The electrode features a current collector with a ferroelectric solid electrolyte that exhibits enhanced resistance properties even when the electrode density is increased. The solid electrolyte particles and conductive particles are specifically chosen to enhance the electrode's resistance characteristics.

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All-solid-state battery with enhanced safety and efficiency through stress relief. The battery incorporates an elastic layer that distributes compressive stress during cell assembly and discharge, particularly beneficial when cathode thickness increases. The elastic layer is formed through a foam process after lamination, allowing precise control over its thickness and foam structure. This design enables uniform pressure distribution across the battery's contact surfaces during charging and discharging, while preventing dendrite formation during charging. The elastic layer's foam structure also enables efficient stress relief during compression and recovery processes.

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All-solid battery with enhanced safety features through a novel design that eliminates short circuits between electrodes. The battery incorporates a unique configuration where the solid electrolyte layer extends beyond the anode collector, while maintaining contact between the cathode and anode layers. This design prevents contact between the cathode and anode surfaces during manufacturing, significantly reducing the risk of short circuits. The solid electrolyte layer is positioned on the insulating layer, which extends further than the anode collector, preventing direct contact between the cathode and anode layers. The design enables safe operation of the battery by preventing lithium precipitation during charge.

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All solid battery with enhanced reliability through optimized electrode layer interfaces. The battery structure comprises a solid electrolyte layer sandwiched between two electrode layers, with specific interface characteristics between the electrode layers and the solid electrolyte layer. The electrode layers are comprised of conductive materials and active materials, while the solid electrolyte layer has oxide-based solid electrolyte. The interface characteristics between the electrode layers and the solid electrolyte layer are engineered to prevent peeling, while the interface characteristics between the solid electrolyte layer and the electrode layers are optimized to enhance cell performance.

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All-solid-state battery with improved interfacial bonding between anode and electrolyte layers through controlled pressurization. The battery comprises a solid electrolyte layer between the positive electrode and negative electrode layers, with a mixed layer comprising an anode material and electrolyte material. The mixed layer thickness is optimized between 2-50 μm, with specific volume ratios of anode to electrolyte. Pressurization during manufacturing ensures uniform bonding between the anode and electrolyte layers, preventing damage to either component.

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An electrode structure for all-solid-state batteries that enables volume compensation through internal compression. The structure comprises a current collector with a folded portion where a cathode and anode active materials are arranged in series. A compression pad is integrated within this folded section, specifically positioned between the cathode and anode layers. This compression pad maintains uniform thickness across the cell while accommodating the lithium deposition reaction in the negative electrode. The folded structure enables efficient volume compensation through the compression pad, thereby maintaining cell performance and preventing thermal runaway.

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All-solid-state battery with enhanced safety and performance through a novel negative electrode design. The battery incorporates a porous polymer support with a metal coating layer, where the metal layer is formed on the support surface. The metal layer acts as both the negative electrode current collector and anode current collector, eliminating the need for separate anode materials. The design enables precise control of lithium deposition through the metal layer, while maintaining structural integrity during charging and discharging. The porous polymer support ensures reliable lithium deposition and stress reduction, while the metal layer provides electrical conductivity. The battery achieves improved safety, reduced stress, and enhanced performance compared to conventional solid-state batteries.

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Solid-state battery with enhanced cycle life and safety features. The battery comprises a laminated structure with a positive electrode containing active material and current collector layer, a negative electrode containing active material and current collector layer, and a solid electrolyte layer. The current collector layer is specifically designed to minimize thermal expansion and contraction during charging and discharging, while the active material layers are optimized for their respective electrode positions. The solid electrolyte layer enables reliable operation in a controlled environment, eliminating the need for a conventional liquid electrolyte.

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Solid-state battery with improved thermal management during charging. The battery features a solid electrolyte layer with integrated buffer zones at the electrode-electrolyte interface. The buffer zones have lower densities than the active materials in the corresponding electrode layers, creating a localized thermal gradient that helps prevent thermal runaway. This design enables the battery to maintain stable operating temperatures during charging while maintaining structural integrity.

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All-solid-state battery with enhanced structural integrity that prevents cell displacement during manufacturing and operation. The battery features a cell configuration with cells arranged in series along the thickness direction, where each cell has a current collector, active material layer, electrolyte layer, and current collector. The cells are connected through a common current collector and have a fixed positioning mechanism, with the current collector tabs positioned at non-overlapping positions relative to the active material layers. This configuration prevents cell-to-cell misalignment during manufacturing and operation, ensuring structural integrity and preventing potential short circuits due to positional shifts.

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A multilayer all-solid battery that achieves enhanced reliability through optimized electrode and electrolyte interfaces. The battery features alternating electrode and collector layers with different electrode paste and electrolyte particle sizes, ensuring superior interface roughness between adjacent layers. The electrode layers have thicker electrolyte layers with optimized particle sizes, while the collector layers have thinner electrolyte layers with reduced particle sizes. This design approach addresses the challenges of peeling and short cycling associated with conventional all-solid batteries by maximizing interface roughness between adjacent layers.

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A method to improve the surface uniformity and long-term durability of lithium-ion battery anodes through controlled microgel incorporation. The method involves creating an anode slurry with less than 50 microgels per area of 10.2 cm2, which significantly enhances surface roughness while maintaining uniformity. The slurry is then applied to an anode current collector, dried, and rolled to form a uniform anode layer. This approach enables the creation of anode surfaces with surface roughness as low as 1.0 μm and standard deviation as low as 0.05, thereby preventing lithium plating and improving battery lifespan.

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A solid-state battery design that addresses the limitations of traditional solid electrolyte interphase (SEI) management in solid-state batteries. The design incorporates a novel electrode architecture where the active material layer is manufactured in a controlled, slow process to ensure uniform distribution of the electrolyte. This approach eliminates localized SEI formation and promotes consistent ion transport across the electrode thickness, thereby reducing internal resistance and improving overall battery performance.

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Positive electrode for solid-state batteries that prevents cracking during lamination pressing through strategically positioned leads. The electrode features a positive electrode collector with a built-in active material layer containing the active material, and strategically placed leads on the collector's outer periphery. The leads form a solid electrolyte interface that prevents pressure-induced cracking during lamination. This design enables the electrode to maintain structural integrity even under high pressure conditions during manufacturing.

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All-solid battery with enhanced safety features that prevents short circuits between the cathode and anode layers. The battery architecture features a solid electrolyte layer extending beyond the anode layer, with a curved current collector that prevents direct contact between the anode and cathode layers. This design configuration ensures that the anode layer remains isolated from the cathode layer during manufacturing, preventing potential lithium precipitation and maintaining overall battery safety.

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