Negative Electrode Active Material For Lithium Secondary Battery And Lithium Secondary Battery Comprising Same
Patent No. EP3683871 (titled "Negative Electrode Active Material For Lithium Secondary Battery And Lithium Secondary Battery Comprising Same") was filed by LG Chem on Oct 26, 2018. The application was issued on Dec 1, 2021.
Patent Summary
A negative electrode active material for lithium-ion batteries comprising two types of carbon-based particles and a silicon-based particle. The material comprises 5-20 wt% of a first carbon-based particle with a specific surface area of 1.5-4.5 m2/g, 55-90 wt% of a second carbon-based particle with a specific surface area of 0.4-1.5 m2/g, and 1-40 wt% of a silicon-based particle. The material enables high energy density while mitigating the volume expansion and capacity degradation associated with silicon-based electrodes.
Patent Family
Patent Oppositions
Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Dossier Documents
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents
EP3683871
- Application Number
- EP18869600A
- Filing Date
- Oct 26, 2018
- Status
- Granted And Under Opposition
- Oct 29, 2021
- Publication Date
- Dec 1, 2021
- External Links
- Slate, Register , Google Patents