Murata manufacturing co., ltd. (20240347706). NEGATIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY simplified abstract

NEGATIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY

Organization Name

murata manufacturing co., ltd.

Inventor(s)

Li Wang of Shanghai (CN)

Yan Zhou of Shanghai (CN)

Yuli Li of Shanghai (CN)

Kazumasa Takeshi of Shanghai (CN)

NEGATIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240347706 titled 'NEGATIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY

The present invention introduces a negative electrode composite material with enhanced performance for lithium-ion secondary batteries.

• The negative electrode composite material includes negative electrode active material particulates with LiCo and LiOH at their surface.
• The particulates consist of silicon oxide particles and at least one lithium silicate, such as LiSiO and Li2SiO3.
• A carbon coating layer covers some of the particle surfaces, improving overall battery performance.
• The material reduces residual lithium content, enhances slurry processing, and boosts battery efficiency and cycle life.

1. 1. 1. Potential Applications:

This technology can be applied in the manufacturing of lithium-ion batteries for various electronic devices, electric vehicles, and energy storage systems.

1. 1. 1. Problems Solved:

1. Reduced residual lithium content in batteries. 2. Improved processing performance of battery components. 3. Enhanced initial coulombic efficiency and cycle performance of lithium-ion batteries.

1. 1. 1. Benefits:

1. Increased battery efficiency and longevity. 2. Enhanced overall performance of lithium-ion batteries. 3. Improved sustainability and reliability of energy storage solutions.

1. 1. 1. Commercial Applications:

This innovation can revolutionize the lithium-ion battery industry, leading to more efficient and durable energy storage solutions for a wide range of applications.

1. 1. 1. Questions about Lithium-Ion Battery Technology:
         1. 1. How does the negative electrode composite material impact battery performance?

The negative electrode composite material improves battery efficiency and cycle life by reducing residual lithium content and enhancing processing performance.

1. 1. 1. 1. 2. What are the potential applications of this technology beyond lithium-ion batteries?

This technology can also be utilized in other energy storage systems, such as supercapacitors, to enhance their performance and longevity.

Original Abstract Submitted

the present invention provides a negative electrode composite material, a preparation method thereof, a negative electrode and a lithium ion secondary battery. the negative electrode composite material comprises negative electrode active material particulates and licoand lioh at the surface of the negative electrode active material particulates, the negative electrode active material particulates comprise: particles containing silicon oxide and at least one lithium silicate selected from lisioand lisio; and a carbon coating layer coating at least a part of surface of the particles, based on the weight of the negative electrode active material particulates, the content of licois greater than about 0 wt % and less than about 0.01 wt %, and the content of lioh is greater than about 0 wt % and less than about 0.01 wt %. by the negative electrode composite material, the preparation method thereof, the negative electrode and the lithium-ion secondary battery of the present invention, the residual lithium amount can be reduced to a great extent, the processing performance of the slurry can be significantly improved, and the initial coulombic efficiency and cycle performance of the lithium-ion secondary battery can be improved.