Method for Improved Preloading of Battery Electrodes with Metal Ions and Preloaded Battery Electrodes with Improved Electrical Properties

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This invention discloses a method for improving the performance of battery electrodes for alkali-ion batteries (such as lithium-ion batteries) by first pre-loading the electrodes with metal ions and subsequently treating them in a special solution. The treatment involves immersing the pre-loaded electrode in an organic solvent containing specific additives like carbon dioxide, organic carbonates, or organosilanes, without applying any electric current. This process results in a stable deposition of the additive on the electrode, enhancing the electrical properties and cycle stability of the resulting battery electrodes.

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• Manufacturing high-performance lithium-ion battery electrodes for consumer electronics like smartphones and laptops.
• Production of durable and efficient electrodes for electric vehicle battery packs.
• Development of advanced battery solutions in renewable energy storage systems (e.g., grid storage).
• Use in batteries for power tools and medical devices requiring reliable long-term energy supply.
• Production of sodium-ion or potassium-ion batteries as alternatives to lithium-ion technologies.

BenefitsContent extracted from patent full text and abstract with AI.

• Improved cycle stability, allowing batteries to maintain capacity over more charging/discharging cycles.
• Higher specific energy and enhanced initial capacity, leading to longer-lasting batteries.
• Cost-effective and reproducible method not dependent on the specific details of the pre-loading process.
• Flexible compatibility with various electrode materials, including graphite/silicon composites.
• Potential for reduced material degradation and safety risks over the battery lifespan.

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Patent Abstract

The present invention relates to a method for producing an electrode for an alkali-ion storage battery, the method comprising at least the method steps of: a) providing an electrode layer preloaded with alkali ions; and b) currentless contacting of the preloaded electrode layer provided in method step a) with a solution comprising an organic solvent and at least one additive dissolved therein, wherein the additive is selected from the group consisting of carbon dioxide, organic carbonates, organic silanes, derivatives thereof or mixtures of at least two additives from this group, and currentless deposition of at least part of the additive onto the preloaded electrode layer in the absence of an electrolyte salt. The present invention also relates to electrodes produced by means of the method according to the invention and to the use of the method for producing electrodes for alkali-ion storage batteries.