18131950. Electrode and All-Solid-State Battery simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

Electrode and All-Solid-State Battery

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Heidy Hodex Visbal Mendoza of Nagoya-shi Aichi-ken (JP)

Masaru Kubota of Okazaki-shi Aichi-ken (JP)

Electrode and All-Solid-State Battery - A simplified explanation of the abstract

This abstract first appeared for US patent application 18131950 titled 'Electrode and All-Solid-State Battery

Simplified Explanation

The patent application describes an electrode that includes a sulfide-based solid electrolyte, an electrolyte microparticle, and a composite particle. The sulfide-based solid electrolyte has a high concentration of a crystalline phase and a molar ratio of the crystalline phase to the total amount of phases of 60% or more. The electrolyte microparticle has a smaller size compared to the sulfide-based solid electrolyte. The composite particle consists of a positive electrode active material particle and a coating film. The coating film contains a phosphorus compound that includes phosphorus and either a glass network forming element or a transition element. The concentration of elements in the coating film is measured by XPS.

• The electrode includes a sulfide-based solid electrolyte with a high concentration of a crystalline phase.
• The electrolyte microparticle has a smaller size compared to the sulfide-based solid electrolyte.
• The composite particle consists of a positive electrode active material particle and a coating film.
• The coating film contains a phosphorus compound with specific element concentrations.
• The technology can be used in various applications such as batteries, fuel cells, and supercapacitors.
• The high concentration of the crystalline phase in the sulfide-based solid electrolyte improves the performance of the electrode.
• The smaller size of the electrolyte microparticle enhances the overall efficiency of the electrode.
• The specific composition of the coating film with phosphorus compound provides improved stability and performance.
• The technology solves the problem of low efficiency and stability in electrodes.
• The technology offers benefits such as improved performance, stability, and efficiency in various energy storage devices.

Original Abstract Submitted

An electrode comprises a sulfide-based solid electrolyte, an electrolyte microparticle, and a composite particle. The sulfide-based solid electrolyte includes S and P, has a PScrystalline phase, and has a molar ratio of the PScrystalline phase to a total amount of phases consisting of P and S of 60% or more. A ratio of a D50 of the electrolyte microparticle to a D50 of the sulfide-based solid electrolyte is 0.5 or less. The composite particle comprises a positive electrode active material particle and a coating film. The coating film includes a phosphorus compound. The phosphorus compound includes at least one of a first element (a glass network forming element) and a second element (a transition element) as well as phosphorus. In the coating film, a relationship of “expression (1): C(C+C+C)≤2.5” is satisfied. C, C, C, and Crepresent element concentrations of respective elements measured by XPS.