Method for manufacturing all-solid-state battery

Patent metadata

Field	Value
Publication number	US-2017207482-A1
Application number	US-201715397257-A
Country	US
Kind code	A1
Filing date	Jan 3, 2017
Priority date	Jan 18, 2016
Publication date	Jul 20, 2017
Grant date	—

Abstract

Provided is a method for manufacturing an all-solid-state battery with which an all-solid-state battery of high performance may be easily manufactured. The method includes forming a first active material layer on each of a right face and a reverse face of a first current collector, forming a solid electrolyte layer on each first active material layer formed in the forming, arranging a second active material layer arranged on a base material, onto each solid electrolyte layer formed in the forming, in a manner that the solid electrolyte layer and the second active material layer have contact with each other, forming a stack by removing each base material having contact with the second active material layer, carrying out a roll press on the stack, and arranging a second current collector on each second active material layer of the stack on which the roll press is carried out.

First claim

1 . A method for manufacturing an all-solid-state battery comprising:
forming a first active material layer on each of a right face and a reverse face of a first current collector; forming a solid electrolyte layer on each said first active material layer formed in the forming; arranging a second active material layer arranged on a base material, onto each said solid electrolyte layer formed in the forming, in a manner that the solid electrolyte layer and the second active material layer have contact with each other; forming a stack by removing each said base material having contact with the second active material layer; carrying out a roll press on the stack; and arranging a second current collector on each said second active material layer of the stack on which the roll press is carried out.

2 . The method for manufacturing an all-solid-state battery according to claim 1 , wherein the roll press is a hot roll press.

3 . The method for manufacturing an all-solid-state battery according to claim 2 , wherein the second current collector includes a conductive layer containing a conductive material and a resin.

4 . The method for manufacturing an all-solid-state battery according to any one of claims 1 to 3 ,
wherein:
a stacking face of the first current collector and a stacking face of the second current collector, whose normal directions are in a stacking direction of each layer of the stack, have the same shape;
in arranging the second current collector, the second current collector is arranged in a manner that the second active material layer is arranged at a central portion of the second current collector, the second current collector including an insulation material at an outer edge portion of the stacking face, the central portion being surrounded by the insulation material; and
the first current collector is an anode current collector and the second current collector is a cathode current collector.

5 . The method for manufacturing an all-solid-state battery according to claim 4 , wherein the insulation material is further arranged on a part of a tab extended outside from the outer edge portion of the second current collector, continuously from the outer edge portion.

Assignees

• Toyota Motor Co Ltd

Inventors

• Tomura Seiji
• Takemoto Takashi
• Suzuki Tomoya
• Haga Kengo

Classifications

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M10/0525

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

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M4/587

  for inserting or intercalating light metals · CPC title