Toyota jidosha kabushiki kaisha (20240339598). NEGATIVE ELECTRODE ACTIVE MATERIAL LAYER AND SOLID-STATE SECONDARY BATTERY simplified abstract

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NEGATIVE ELECTRODE ACTIVE MATERIAL LAYER AND SOLID-STATE SECONDARY BATTERY

Organization Name

toyota jidosha kabushiki kaisha

Inventor(s)

Ryosuke Furuya of Gotemba-shi (JP)

NEGATIVE ELECTRODE ACTIVE MATERIAL LAYER AND SOLID-STATE SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240339598 titled 'NEGATIVE ELECTRODE ACTIVE MATERIAL LAYER AND SOLID-STATE SECONDARY BATTERY

The abstract of this patent application describes a negative electrode active material layer for a solid-state secondary battery, where the electrical conductivity of silicon active material particles is improved by reducing the amount of oxygen atoms in the particles. This improvement allows for better performance even when the battery's charging capacity is low.

  • The negative electrode active material layer contains silicon active material particles and solid electrolyte particles.
  • The amount of oxygen atoms in the silicon active material particles is less than 5.0% by mass.
  • The average particle size of the solid electrolyte particles is 1.0 µm or less.
  • The ratio of the average particle size of the solid electrolyte particles to the average particle size of the silicon active material particles is 0.9 or less.

Potential Applications: - This technology can be used in the development of high-performance solid-state secondary batteries. - It may find applications in electric vehicles, portable electronics, and renewable energy storage systems.

Problems Solved: - Improves the electrical conductivity of silicon active material particles. - Prevents deterioration of electrical resistance in the battery, even at low charging capacities.

Benefits: - Enhanced performance and efficiency of solid-state secondary batteries. - Increased reliability and longevity of battery systems.

Commercial Applications: Title: Advanced Negative Electrode Active Material Layer for Solid-State Batteries This technology has the potential to revolutionize the battery industry by enabling the production of more efficient and durable solid-state batteries. It can cater to a wide range of commercial applications, including electric vehicles, consumer electronics, and grid energy storage systems.

Questions about the technology: 1. How does reducing the amount of oxygen atoms in silicon active material particles improve the performance of the battery? 2. What are the key advantages of using solid electrolyte particles in the negative electrode active material layer?


Original Abstract Submitted

an object of the present disclosure is to provide a negative electrode active material layer, in which electrical conductivity of silicon active material particles is improved by decreasing the amount of oxygen atoms in the silicon active material particles while electrical resistance is less likely to deteriorate even when charging capacity of a battery is low, and a solid-state secondary battery comprising such a negative electrode active material layer. the negative electrode active material layer of the present disclosure contains silicon active material particles and solid electrolyte particles, wherein an amount of oxygen atoms in the silicon active material particles is less than 5.0% by mass, and an average particle size of the solid electrolyte particles is 1.0 �m or less and/or a ratio of an average particle size of the solid electrolyte particles relative to an average particle size of the silicon active material particles is 0.9 or less.

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