18462729. SOLID-STATE BATTERY AND METHOD FOR PRODUCING THE SAME simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

SOLID-STATE BATTERY AND METHOD FOR PRODUCING THE SAME

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Jun Yoshida of Mishima-shi (JP)

Shinya Shiotani of Toyota-shi (JP)

Masaru Kubota of Toyota-shi (JP)

Yohei Shindo of Toyota-shi (JP)

Takeshi Usami of Toyota-shi (JP)

SOLID-STATE BATTERY AND METHOD FOR PRODUCING THE SAME - A simplified explanation of the abstract

This abstract first appeared for US patent application 18462729 titled 'SOLID-STATE BATTERY AND METHOD FOR PRODUCING THE SAME

Simplified Explanation

The abstract describes a solid-state battery with low heat generation and low resistance, as well as a method for producing it. Here are the key points:

• The solid-state battery consists of a cathode, an anode, and a solid electrolyte layer.
• The cathode layer contains an oxide-based cathode active material, while the anode layer contains an anode active material.
• The solid electrolyte layer, which is positioned between the cathode and anode layers, contains a solid electrolyte.
• Either the cathode layer or the solid electrolyte layer (or both) contains a sulfide-based solid electrolyte.
• The sulfide-based solid electrolyte has a high oxygen concentration layer on its contact surface with the oxide-based cathode active material.
• This high oxygen concentration layer has a higher oxygen element concentration than other parts of the sulfide-based solid electrolyte, except for the contact surface.

Potential applications of this technology:

• Electric vehicles: Solid-state batteries with low heat generation and low resistance could be used to power electric vehicles, providing longer range and faster charging times.
• Portable electronics: The improved performance of solid-state batteries could enhance the battery life and charging speed of smartphones, laptops, and other portable devices.
• Renewable energy storage: Solid-state batteries could be used to store energy from renewable sources like solar and wind, improving the efficiency and reliability of the power grid.

Problems solved by this technology:

• Heat generation: The low heat generation of the solid-state battery reduces the risk of overheating and improves safety.
• Resistance: The low resistance of the battery allows for more efficient energy transfer and reduces power loss.

Benefits of this technology:

• Improved performance: The low heat generation and low resistance of the solid-state battery result in better overall performance, including longer battery life and faster charging.
• Enhanced safety: The reduced heat generation lowers the risk of thermal runaway and improves the safety of the battery.
• Compatibility with sulfide-based electrolytes: The inclusion of a sulfide-based solid electrolyte in the battery allows for higher oxygen concentration at the cathode interface, improving battery performance.

Original Abstract Submitted

A solid-state battery having a low heat generation amount and low resistance, and a method for producing the same. The solid-state battery is a solid-state battery comprising: a cathode comprising a cathode layer that contains an oxide-based cathode active material, an anode comprising an anode layer that contains an anode active material, and a solid electrolyte layer being disposed between the cathode layer and the anode layer and containing a solid electrolyte, wherein at least any one of the cathode layer and the solid electrolyte layer contains a sulfide-based solid electrolyte, and wherein the sulfide-based solid electrolyte comprises a high oxygen concentration layer on a contact surface with the oxide-based cathode active material, the high oxygen concentration layer having a higher oxygen element concentration than other parts except the contact surface.