Method for Producing a Precursor, a Battery Cell and a Battery

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This patent describes a method for producing a battery cell pre-product by mechanically mixing lithium (Li) and sodium (Na) in the solid state, creating a fine, homogeneous, three-dimensional lattice structure. This structure, used as the negative electrode in battery cells, provides a low electrical impedance and a very effective electrical interface, resulting in enhanced battery performance. The method allows production of stable, high-performance lithium and sodium-based batteries, especially suited for solid-state designs.

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• Manufacturing of high-performance lithium or sodium batteries for electric vehicles (EVs), consumer electronics, and grid storage.
• Production of solid-state batteries requiring stable, low-impedance electrodes.
• Application in energy storage systems where high charging rates and safety are crucial.
• Development of batteries for portable devices with high capacity and longer lifetime requirements.
• Implementation in industrial battery systems that demand reduced dendrite formation and improved cycling stability.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides a robust three-dimensional lattice for the electrode, ensuring very low impedance and excellent ion/electron transfer.
• Significantly reduces the risk of dendrite formation, improving safety and lifespan.
• Enables higher charging/discharging rates (high critical current densities) without performance degradation.
• Simple and cost-effective mechanical mixing process, scalable for industrial manufacturing.
• Improves battery efficiency and energy density by maintaining intimate contact and uniformity at the electrolyte/electrode interface.
• Adaptable to both lithium- and sodium-based solid or liquid electrolyte battery systems.

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Patent Abstract

The invention relates to a method for producing a pre-product for a battery cell, to a method for producing a battery cell, to a method for producing a battery, and to a battery cell. In a method for producing a pre-product (1) for a battery cell (2), Li and Na are mechanically mixed with one another in the solid state. In this way, a three-dimensional lattice structure can be produced which allows particularly low impedance and thus particularly good electrical transfer.