Manufacturing method of electrode assembly

Patent metadata

Field	Value
Publication number	US-10770757-B2
Application number	US-201615764260-A
Country	US
Kind code	B2
Filing date	Sep 26, 2016
Priority date	Oct 23, 2015
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A step of supplying, solidifying, and crystallizing a solid electrolyte 22 including Li2+XC1−XBXO3 (X represents a real number equal to or greater than 0 and smaller than 1), so as to be in contact with an active material aggregate 12 including a communication hole 14 between active material particles 13, is included. In a case where the solid electrolyte 22 is melted, the solid electrolyte 22 is heated in a range of 650 degrees to 900 degrees.

First claim

The invention claimed is:

1. A manufacturing method of an electrode assembly, the method comprising:
a first step of forming an active material formed body including a communication hole;
a second step of providing a solid material including Li 2+X C 1−X B X O 3 (X represents a real number exceeding 0 and equal to or smaller than 1) on the active material formed body without using a solvent;
a third step of melting the solid material; and
a fourth step of rapidly cooling and solidifying a molten material of the solid material,
wherein the communication hole is filled with the molten material in the third step, and
a cooling speed for rapidly cooling the molten material of the solid material is 10 2 degree/sec to 10 5 degree/sec in the fourth step.

2. The manufacturing method of an electrode assembly according to claim 1 , wherein the solid material is heated at a temperature of 650° C. to 900° C. in the third step.

3. The manufacturing method of an electrode assembly according to claim 1 , wherein X in the Li 2+X C 1−X B X O 3 is 0.2 to 0.6.

4. The manufacturing method of an electrode assembly according to claim 1 , wherein the amount of the solid material is an amount with which a layer can be formed on the active material formed body after the solidification.

Assignees

• Seiko Epson Corp

Inventors

• Teraoka Tsutomu
• Yokoyama Tomofumi
• Yamamoto Hitoshi
• Okuyama Tomoyuki

Classifications

• H01M50/147

  Lids or covers · CPC title

• Y02P70/50

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

• H01M4/06

  Electrodes for primary cells · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title