Hybrid Electrolyte for Aqueous Lithium-Ion Batteries

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This invention relates to an energy storage device (battery) with a positive and a negative electrode, utilizing a water-based (aqueous) electrolyte that contains an ionic liquid, water, and an organic alkali metal salt, especially a lithium salt. The charge transport is based on the movement of alkali metal ions (mainly lithium ions) in and out of the electrodes, enabled by the unique hybrid electrolyte.

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• Rechargeable lithium-ion batteries for consumer electronics
• Energy storage systems for renewable energy sources, such as solar or wind power
• Electric vehicles and hybrid electric vehicles
• Grid-level energy storage for utility companies
• Power supply for industrial applications

BenefitsContent extracted from patent full text and abstract with AI.

• Potentially increased safety compared to conventional lithium-ion batteries due to the water-based electrolyte
• Improved environmental friendliness because of reduced use of volatile organic solvents
• Possibly lower production costs if water-based components are less expensive
• The ionic liquid may enhance battery performance (e.g., stability, conductivity) compared to purely aqueous or non-aqueous electrolytes
• Enables the use of lithium-ion technology in applications requiring safer or less flammable batteries

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Patent Abstract

The invention relates to an energy storage device comprising a positive electrode, a negative electrode and an electrolyte, wherein charge transport is based on the deintercalation and intercalation of alkali metal ions, in particular lithium ions, in the electrodes, characterized in that the electrolyte is an aqueous electrolyte containing: a) an ionic liquid, b) water, and c) an organic alkali metal salt, in particular lithium salt.