Battery Technology

Li-Booster - SEI-forming electrolyte additive for lithium-ion batteries

Ref.-No. 2912

Keywords: SEI forming electrolyte additive, Lithium-Ion Batteries, Li-Ion, SEI Education, graphite, thermal stability, MEET

Scientists at the MEET battery research center at the Westphalian Wilhelms-University of Muenster have invented an electrolyte additive for the formation of a stable SEI film (SEI = solid electrolyte inter-phase) on anodes for lithium-ion batteries. These substances are used as additives for a propylene carbonate electrolyte at low concentration. During the first charge / discharge cycle the substance decomposes at the graphite electrode and forms a layer which protects the electrode surface. This result for lithium-ion batteries in a reduced loss of capacity and higher thermal stability thus improved safety. Li-Booster includes new previously unknown fluorinated ketones (FK). In particular, cycle stability is significantly improved by the SEI formation at the electrode.

Commercial Application

Lithium ion batteries are widely used as mobile energy storage. The accumulator performance is significantly increased by the Li-Booster.

Status Quo

A German patent application can be internationalized worldwide. PROvendis offers on behalf of the Westphalian Wilhelms University of Muenster licenses to the technology.

An invention of WWU Münster.

Dr. Thorsten Schaefer
+49 208 9410527