Manufacturing method of anode for secondary battery and anode for secondary battery manufactured thereby

Patent metadata

Field	Value
Publication number	US-2019109323-A1
Application number	US-201816150854-A
Country	US
Kind code	A1
Filing date	Oct 3, 2018
Priority date	Oct 11, 2017
Publication date	Apr 11, 2019
Grant date	—

Abstract

Disclosed herein are a manufacturing method of an anode for a secondary battery and an anode for a secondary battery manufactured thereby. The manufacturing method of an anode for a secondary battery includes firstly fusing a plurality of electrolytes to a first adhesive member and a second adhesive member, secondly fusing the first adhesive member and the second adhesive member to a first case and a second case, respectively, injecting an anode active material and a liquid electrolyte into the second case to which the second adhesive member is fused, and thirdly fusing the first case and the second case to each other. The anode for a secondary battery has an effect of maximizing a reaction area because an electrolyte is exposed at both surfaces of the anode for a secondary battery.

First claim

What is claimed is:

1 . A manufacturing method of an anode for a secondary battery, comprising:
firstly fusing a plurality of electrolytes to a first adhesive member and a second adhesive member; secondly fusing the first adhesive member and the second adhesive member to a first case and a second case, respectively; injecting an anode active material and a liquid electrolyte into the second case to which the second adhesive member is fused; and thirdly fusing the first case and the second case to each other.

2 . The manufacturing method of claim 1 , further comprising, before the first fusing, forming a plurality of openings by punching the first adhesive member and the second adhesive member.

3 . The manufacturing method of claim 2 , wherein the forming of the plurality of openings includes forming the plurality of openings at the first adhesive member and the second adhesive member corresponding to a plurality of openings formed at the first case and the second case, respectively.

4 . The manufacturing method of claim 1 , wherein the first fusing includes fusing edges of the plurality of electrolytes to edges of the plurality of openings formed at the first adhesive member and the second adhesive member.

5 . The manufacturing method of claim 1 , wherein the second fusing includes seating the plurality of electrolytes on stepped levels, which are formed along edges of each of the plurality of openings formed at the first case and the second case, and then fusing the first adhesive member and the second adhesive member at the first case and the second case, respectively.

6 . The manufacturing method of claim 1 , wherein the third fusing includes thermally fusing protrusions formed at edges of the first case and the second case.

7 . The manufacturing method of claim 1 , wherein the injecting and the third fusing are performed in an argon (Ar) atmosphere.

8 . An anode for a second battery, comprising:
a first adhesive member and a second adhesive member to which a plurality of electrolytes are fused; a first case configured to be fused to the first adhesive member; and a second case configured to be fused to the second adhesive member and the first case and into which an anode active material and a liquid electrolyte are injected.

9 . The anode of claim 8 , further comprising an anode current collector provided inside the second case and having a portion exposed to the outside of the second case to form an external connection terminal.

10 . The anode of claim 8 , wherein the first adhesive member and the second adhesive member have sheet shapes.

11 . The anode of claim 8 , wherein each of the first adhesive member and the second adhesive member includes a plurality of openings having edges fused to the plurality of electrolytes.

12 . The anode of claim 8 , wherein each of the first case and the second case includes a plurality of openings configured to expose portions of the plurality of electrolytes to the outside of the anode for a secondary battery.

13 . The anode of claim 12 , wherein the plurality of openings are disposed to face each other at the first case and the second case.

14 . The anode of claim 12 , wherein each of the first case and the second case includes stepped levels on which the plurality of electrolytes are seated and which are formed along edges of the plurality of openings.

Assignees

• Ulsan Nat Inst Science & Tech Unist

Inventors

• Kim Youngsik
• Kim Young Jin
• Jeong Da Song
• Park Jeong Sun

Classifications

• H01M4/0478

  with dispersions, suspensions or pastes · CPC title

• H01M4/1395 Primary

  of electrodes based on metals, Si or alloys · CPC title

• H01M10/0563

  Liquid materials, e.g. for Li-SOCl2 cells · CPC title

• H01M10/0525

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

• H01M4/381

  Alkaline or alkaline earth metals elements (H01M4/40 takes precedence) · CPC title