Toyota jidosha kabushiki kaisha (20240194941). ALL SOLID STATE BATTERY simplified abstract

ALL SOLID STATE BATTERY

Organization Name

toyota jidosha kabushiki kaisha

Inventor(s)

Ippei Goto of Okazaki-shi (JP)

ALL SOLID STATE BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240194941 titled 'ALL SOLID STATE BATTERY

The present disclosure pertains to an all solid-state battery that maintains good cycle performance even under low confining pressure applied to the electrode stacked body.

• The all solid-state battery includes an electrode stacked body with a cathode layer, an anode layer, and a solid electrolyte layer sandwiched between them.
• The electrode stacked body is confined under a pressure of 0 MPa to 2 MPa in the thickness direction.
• The anode layer contains an anode active material with a volume expansion rate of 105% or more.
• The solid electrolyte layer consists of a solid electrolyte and a binder, with the binder ratio ranging from 20% to 30% by volume.

Potential Applications: - Energy storage systems - Electric vehicles - Portable electronic devices

Problems Solved: - Maintaining cycle performance under low pressure - Preventing electrode delamination - Enhancing battery durability

Benefits: - Improved cycle life - Enhanced safety - Increased energy density

Commercial Applications: Title: Advanced All Solid-State Battery Technology for Energy Storage Solutions This technology can be utilized in various industries such as automotive, consumer electronics, and renewable energy sectors, leading to more efficient and reliable energy storage solutions.

Questions about All Solid-State Battery Technology: 1. How does the binder ratio in the solid electrolyte layer impact the performance of the battery? 2. What are the key advantages of using an all solid-state battery compared to traditional lithium-ion batteries?

Original Abstract Submitted

a main object of the present disclosure is to provide an all solid state battery with good cycle property even when the confining pressure applied to an electrode stacked body is low. the present disclosure achieves the object by providing an all solid state battery comprising an electrode stacked body including a cathode layer, an anode layer, and a solid electrolyte layer placed between the cathode layer and the anode layer; and the electrode stacked body is confined under confining pressure of 0 mpa or more and 2 mpa or less in a thickness direction; the anode layer includes an anode active material with a volume expansion rate due to charge of 105% or more; the solid electrolyte layer includes a solid electrolyte and a binder; and a ratio of the binder in the solid electrolyte layer is 20 volume % or more and 30 volume % or less.