SECONDARY BATTERY

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SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 18587955 titled 'SECONDARY BATTERY

The secondary battery described in this patent application consists of an electrode body with a positive electrode and a negative electrode. The negative electrode includes a negative current collector and a negative active material layer containing Si-containing particles and hard carbon.

Si-containing particles in the negative active material layer are porous bodies with a network structure containing Si nanoparticles.
The ratio of the average particle diameter of the Si-containing particles to the hard carbon is between 0.1 to 0.7, and the weight ratio of Si-containing particles to hard carbon is between 15:85 to 55:45.

Potential Applications: - This technology can be used in the development of high-performance secondary batteries for various electronic devices. - It can also be applied in electric vehicles to enhance battery efficiency and performance.

Problems Solved: - Addresses the issue of low energy density in traditional secondary batteries. - Improves the overall performance and lifespan of secondary batteries.

Benefits: - Increased energy density and storage capacity. - Enhanced battery performance and longevity. - Potential for more sustainable and efficient energy storage solutions.

Commercial Applications: Title: Advanced Secondary Batteries for Electronics and Electric Vehicles This technology has significant commercial potential in the electronics and electric vehicle industries. It can lead to the development of more efficient and long-lasting batteries, improving the overall performance of electronic devices and electric vehicles.

Questions about the technology: 1. How does the use of Si-containing particles and hard carbon in the negative active material layer improve battery performance? - The combination of Si-containing particles and hard carbon enhances the energy density and storage capacity of the battery, leading to improved overall performance.

2. What are the specific advantages of using porous Si-containing particles in the negative active material layer? - Porous Si-containing particles provide a network structure that allows for better electron and ion transport, improving battery efficiency and performance.

Original Abstract Submitted

The secondary battery disclosed herein is a secondary battery, including an electrode body having a positive electrode and a negative electrode, wherein the negative electrode includes a negative current collector, and a negative active material layer placed on the negative current collector, and the negative active material layer includes Si-containing particles and hard carbon as negative active materials. The Si-containing particles are porous bodies containing Si nanoparticles with a network structure. In the secondary battery, the ratio of the average particle diameter D of the Si-containing particles to the average particle diameter D of the hard carbon (D/D) is 0.1 to 0.7, and the weight ratio of the Si-containing particles and the hard carbon is 15:85 to 55:45.