18473966. POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME simplified abstract (SAMSUNG SDI CO., LTD.)
POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
Organization Name
Inventor(s)
Seonyoung Kwon of Yongin-si (KR)
Minkyeong Kang of Yongin-si (KR)
POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 18473966 titled 'POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
The abstract describes a positive electrode for a rechargeable lithium battery, consisting of a current collector and a positive electrode active material layer. The positive electrode active material layer includes a first positive electrode active material in single particles form and a second positive electrode active material in secondary particles form.
- The positive electrode active material layer contains a lithium nickel-based composite oxide with a nickel content of over 70 mol%.
- The X-ray diffraction analysis of the positive electrode shows a peak intensity ratio of certain planes, indicating a specific crystal structure.
- The first positive electrode active material makes up 75-100 wt% of the layer, while the second positive electrode active material makes up 0-25 wt%.
- The second positive electrode active material is in the form of aggregated primary particles.
Potential Applications: - Rechargeable lithium batteries - Energy storage systems - Electric vehicles
Problems Solved: - Enhanced battery performance - Improved energy density - Increased cycle life
Benefits: - Higher energy storage capacity - Longer battery lifespan - Improved overall battery performance
Commercial Applications: Title: Advanced Positive Electrode for Lithium Batteries This technology can be used in various commercial applications such as electric vehicles, portable electronics, and grid energy storage systems. The market implications include increased demand for high-performance lithium batteries in the automotive and renewable energy sectors.
Questions about the technology: 1. How does the specific crystal structure of the positive electrode active material contribute to the performance of the lithium battery? 2. What are the advantages of using a combination of single particles and secondary particles in the positive electrode active material layer?
Original Abstract Submitted
A positive electrode for a rechargeable lithium battery includes a current collector and a positive electrode active material layer on the current collector, the positive electrode active material layer including a positive electrode active material, the positive electrode active material includes about 75 wt % to about 100 wt % of a first positive electrode active material in a form of single particles and including a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 70 mol %, and about 0 wt % to about 25 wt % of a second positive electrode active material in a form of secondary particles in which a plurality of primary particles are aggregated and including a lithium nickel-based composite oxide, and, in an X-ray diffraction analysis of the positive electrode, a ratio of a peak intensity of a () plane to a () plane is greater than or equal to about 4.8.
