Solid electrolyte and all-solid-state battery

Patent metadata

Field	Value
Publication number	US-10505185-B2
Application number	US-201715657437-A
Country	US
Kind code	B2
Filing date	Jul 24, 2017
Priority date	Feb 2, 2015
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A solid electrolyte including Li, Al, P, O, and N, wherein the solid electrolyte has a P2O7 structure.

First claim

What is claimed is:

1. A solid electrolyte comprising:
Li, Al, P, O, and N,

wherein the solid electrolyte has a P 2 O 7 structure, and
wherein the solid electrolyte is represented by Compositional Formula (1) below:
Li 9+a Al 3+b P 8−c O 29−d N e   Compositional Formula (1)

where Compositional Formula (1) satisfies 0≤a≤5, −1≤b≤1, 0≤c≤2, 0≤d≤5, and 0<e≤5.

2. The solid electrolyte according to claim 1 ,
wherein a vibration spectrum originated from the P 2 O 7 structure is observed at 720 cm −1 to 790 cm −1 in cm infrared spectroscopy.

3. The solid electrolyte according to claim 1 ,
wherein an amount of N is 8 atm % or less.

4. An all-solid-state battery comprising:
a cathode active material layer;
an anode active material layer; and
a solid electrolyte layer disposed between the cathode active material layer and the anode active material layer,
wherein the solid electrolyte layer is a layer formed of the solid electrolyte according to claim 1 .

Assignees

• Fujitsu Ltd

Inventors

• Hida Masaharu
• Watanabe Satoru
• Yamamoto Tamotsu

Classifications

• H01M10/0525

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

• H01M4/5825

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title

• H01M2300/0068

  inorganic · CPC title

• G01N21/3563

  for analysing solids; Preparation of samples therefor · CPC title

• G01N2021/3595

  using FTIR · CPC title