18627711. SECONDARY BATTERY AND ELECTRONIC APPARATUS simplified abstract (Ningde Amperex Technology Limited)
Contents
SECONDARY BATTERY AND ELECTRONIC APPARATUS
Organization Name
Ningde Amperex Technology Limited
Inventor(s)
SECONDARY BATTERY AND ELECTRONIC APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18627711 titled 'SECONDARY BATTERY AND ELECTRONIC APPARATUS
The abstract of the patent application describes a secondary battery with a metal housing and an electrode assembly containing a negative electrode with a material layer that includes a binder made of two different types of polymers.
- The first binder in the negative electrode material layer is selected from styrene-butadiene rubber polymers, while the second binder is selected from polyacrylic acid polymers.
- The weight-average molecular weight of the first binder ranges from 40,000 to 300,000, and the weight-average molecular weight of the second binder ranges from 400,000 to 2,000,000.
- The mass percentage of the first binder in the material layer is between 10% to 90% based on the total mass of the binder.
Potential Applications: - This technology could be used in various types of secondary batteries, such as lithium-ion batteries, to improve their performance and longevity.
Problems Solved: - The use of two different binders in the negative electrode material layer helps enhance the stability and efficiency of the battery, addressing issues related to electrode degradation and performance degradation over time.
Benefits: - Improved battery performance, stability, and longevity. - Enhanced safety and reliability of secondary batteries.
Commercial Applications: - This technology has significant commercial potential in the energy storage sector, particularly in the development of high-performance batteries for electric vehicles, portable electronics, and renewable energy storage systems.
Questions about the technology: 1. How does the use of two different binders in the negative electrode material layer impact the overall performance of the battery? 2. What are the specific advantages of using styrene-butadiene rubber polymers and polyacrylic acid polymers as binders in the electrode assembly?
Original Abstract Submitted
A secondary battery includes a metal housing and an electrode assembly arranged inside the metal housing. The electrode assembly includes a negative electrode. The negative electrode includes a negative electrode material layer. The negative electrode material layer includes a binder. The binder includes a first binder and a second binder, where the first binder is selected from styrene-butadiene rubber polymers and the second binder is selected from polyacrylic acid polymers. A weight-average molecular weight of the first binder is 40,000 to 300,000, and a weight-average molecular weight of the second binder is 400,000 to 2,000,000. A mass percentage of the first binder is 10% to 90% based on a mass of the binder.
