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

Summary

an electrolyte additive for the formation of a stable SEI film (SEI = solid electrolyte inter-phase) on anodes for lithium-ion batteries.

Technology Benefits

Enhanced temperature stability
Improved safety
Suitable for long-lasting lithium-ion batteries
Simple synthesis of the FKs
Lab tested

Technology Application

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

Detailed Technology Description

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.

Type of Cooperation

Licensing

Application Date

02/08/2012 00:00:00

Application No.

DE20111052383 20110803

Classes

- international:
H01M10/052
- cooperative:
H01G11/58; H01M10/052; H01M10/0525; H01M10/0567; H01M14/00

Others

Patent application

ID No.

2912

Country/Region

Germany