Imidazolinylide Compound for Use as a Shut-Down Additive for Lithium-Ion Batteries, and Electrolyte and Battery

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a specific class of imidazolinylid compounds used as shut-down additives in lithium-ion batteries. These additives are designed to safely interrupt battery operation when a critical voltage (indicating overcharge) is exceeded. Unlike previous additives, these compounds allow batteries to operate at higher voltages without compromising safety, lifespan, or efficiency, and reduce the risk of releasing toxic compounds during battery failure.

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

• Electric vehicles (EVs) to enhance battery safety and prevent thermal runaway during overcharging.
• Consumer electronic devices (smartphones, laptops, tablets) for improved battery performance and safety.
• Grid-scale energy storage systems using lithium-ion batteries.
• Industrial or medical equipment where battery reliability and safety are crucial.
• Aviation or aerospace applications that require high-voltage, safe, and robust lithium-ion batteries.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables batteries to safely shut down upon overcharging, greatly reducing fire and explosion risk (thermal runaway).
• Permits use of higher operating voltages, leading to increased energy density and longer device runtime.
• Maintains cycle life and energy efficiency of the battery, as the additive does not adversely affect normal cycling behavior.
• Reduces formation of highly toxic byproducts compared to phosphate-based additives, enhancing safety during severe battery failures.
• Additive properties can be tuned to adjust shut-down voltage for specific applications by altering substituents.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to an imidazolinylide compound for use as a shut-down additive for lithium ion batteries of formula (I), and to a method for preparing said imidazolinylide compound (I), to an electrolyte and to a battery containing said imidazolinylide compound (I).