Solid electrolyte, method for producing solid electrolyte, and composite body

Patent metadata

Field	Value
Publication number	US-12166169-B2
Application number	US-202117195952-A
Country	US
Kind code	B2
Filing date	Mar 9, 2021
Priority date	Mar 10, 2020
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A solid electrolyte according to the present disclosure is represented by the following compositional formula (1).

Li 7-2x-z La 3 (Zr 2-x-z W x M z )O 12   (1)

In the formula (1), x and z satisfy 0.10≤x≤0.60 and 0.00<z≤0.25, and M is at least one type of element selected from the group consisting of Nb, Ta, and Sb.

First claim

What is claimed is:

1. A solid electrolyte, represented by the following compositional formula (1):
Li 7-2x-z La 3 (Zr 2-x-z W x M z )O 12   (1)

wherein x and z satisfy 0.10≤x≤0.60 and 0.08<z≤0.18,
M includes Sb, Nb, and Ta,
a ratio of Nb to an entire amount of M is at least 50 at %;
a ratio of Ta to the entire amount of M is at least 2 at %, and
a ratio of Sb to the entire amount of M is at least 40 at %.

2. A composite body, comprising:
an active material; and
the solid electrolyte according to claim 1 that coats a part of a surface of the active material.

Assignees

• Seiko Epson Corp

Inventors

• Yamamoto Hitoshi
• Teraoka Tsutomu
• Yokoyama Tomofumi

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2300/0077

  based on zirconium oxide · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M2300/0091

  in the form of mixtures · CPC title