Solid electrolyte material and all solid lithium battery

Patent metadata

Field	Value
Publication number	US-2017040636-A1
Application number	US-201615202627-A
Country	US
Kind code	A1
Filing date	Jul 6, 2016
Priority date	Aug 5, 2015
Publication date	Feb 9, 2017
Grant date	—

Abstract

A main object of the present invention is to provide a solid electrolyte material with high Li ion conductivity and heat stability. To achieve the above object, the present invention provides a solid electrolyte material comprising a composition of Li 3 PS 4-x O x (1≦x≦3), a crystal phase A having a peak at a position of 2θ=17.80°±0.50°, 25.80°±0.50° in X-ray diffraction measurement using a CuKα ray, and a crystal phase B having a peak at a position of 2θ=22.30°±0.50°, 23.14°±0.50°, 24.80°±0.50°, 33.88°±0.50°, 36.48°±0.50° in X-ray diffraction measurement using a CuKα ray.

First claim

What is claimed is:

1 . A solid electrolyte material comprising: a composition of Li 3 PS 4-x O x (1≦x≦3),
a crystal phase A having a peak at a position of 2θ=17.80°±0.50°, 25.80°±0.50° in X-ray diffraction measurement using a CuKα ray, and
a crystal phase B having a peak at a position of 2θ=22.30°±0.50°, 23.14°±0.50°, 24.80°±0.50°, 33.88°±0.50°, 36.48°±0.50° in X-ray diffraction measurement using a CuKα ray.

2 . The solid electrolyte material according to claim 1 , further comprising LiX (X represents F, Cl, Br or I).

3 . An all solid lithium battery comprising a cathode active material layer, an anode active material layer, and a solid electrolyte layer formed between the cathode active material layer and the anode active material layer,
wherein at least one of the cathode active material layer, the anode active material layer, and the solid electrolyte layer contains the solid electrolyte material according to claim 1 .

Assignees

• Toyota Motor Co Ltd

Inventors

• Oki Erika
• Osada Naoki

Classifications

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/0525

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

• Y02P70/50

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