18612418. NEGATIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY simplified abstract (Murata Manufacturing Co., Ltd.)
NEGATIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY
Organization Name
Murata Manufacturing Co., Ltd.
Inventor(s)
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 18612418 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 on their surface.
- The negative electrode active material particulates consist of silicon oxide particles and lithium silicate, such as LiSiO and LiSiO.
- A carbon coating layer covers at least a portion of the particle surfaces, improving processing performance and reducing residual lithium content.
- The content of LiCO and LiOH in the material is carefully controlled to optimize battery performance.
Potential Applications: This technology can be applied in the manufacturing of lithium-ion batteries for various electronic devices, electric vehicles, and energy storage systems.
Problems Solved: The innovation addresses the challenges of reducing residual lithium content, improving processing efficiency, and enhancing the overall performance of lithium-ion batteries.
Benefits: The negative electrode composite material improves the initial Coulombic efficiency and cycle performance of lithium-ion batteries, leading to more reliable and long-lasting energy storage solutions.
Commercial Applications: This technology has significant implications for the battery industry, particularly in the development of high-performance lithium-ion batteries for a wide range of applications.
Prior Art: Researchers interested in this technology may explore prior studies on silicon-based negative electrode materials for lithium-ion batteries to understand the evolution of this field.
Frequently Updated Research: Stay informed about the latest advancements in silicon-based negative electrode materials and their impact on lithium-ion battery performance for cutting-edge energy storage solutions.
Questions about the Technology: 1. How does the controlled content of LiCO and LiOH in the negative electrode composite material contribute to battery performance? 2. What are the key advantages of using silicon-based negative electrode materials in lithium-ion batteries compared to traditional materials?
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.
