Electrolyte System for Use in Electrochemical Components

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This patent presents a new class of electrolytes for use in electrochemical devices such as lithium batteries. The invention introduces novel tetrazolide-based anions, especially ones substituted at the 5-position with electron-withdrawing groups, combined with suitable cations to produce ionic liquids and salts. These materials offer improved ionic conductivity, thermal and chemical stability, and wider operational temperature ranges, making them particularly suitable as electrolytes in high-performance, safer lithium-ion batteries and other electrochemical storage devices.

Use CasesContent extracted from patent full text and abstract with AI.

• Electrolytes in lithium-ion batteries for consumer electronics (laptops, smartphones, etc.)
• Electrolytes in automotive batteries for electric vehicles and hybrid cars
• Electrolytes for large-scale energy storage systems, such as grid storage and renewable energy buffering
• Electrolytes in high-voltage battery chemistries for aerospace or specialty applications
• Use in dye-sensitized solar cells and other advanced photovoltaic battery systems
• Application in supercapacitors and electrochemical capacitors
• Use as safe, high-stability electrolytes in fuel cells

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly improved thermal and electrochemical stability compared to conventional organic electrolyte solvents, reducing fire and explosion risks.
• Wider operational temperature range, enabling battery operation from as low as -30°C up to 80°C or higher.
• Higher ionic conductivity leads to better battery performance and faster charging/discharging.
• Enhanced chemical stability ensures longer device lifespans and safer storage.
• Low volatility (negligible vapor pressure) and high flash points (>200°C) further improve safety over current electrolytes.
• Ability to form stable protective layers on electrodes, reducing degradation and increasing cycling life.
• Versatility to mix with conventional solvents, salts, or create polymer gels, allowing for tailoring of electrolyte systems for diverse applications.

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Inventors & Applicants

Patent Abstract

By introducing new tetrazolide-based anions substituted at the 5-position, as well as known tetrazolidanions substituted at the 5-position, in combination with suitable cations, the invention provides new ionic liquids and salt compounds that can advantageously be used as solvents for ion conduction in electrochemical devices and in particular in lithium batteries. The substituents at the 5-position are all characterized by an electron-withdrawing effect that stabilizes the negative charge of the tetrazole ring through an inductive and/or mesomeric effect.