Current collector for battery comprising metal mesh layer and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-10276873-B2
Application number	US-201314399749-A
Country	US
Kind code	B2
Filing date	Apr 22, 2013
Priority date	May 9, 2012
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.

First claim

What is claimed is:

1. A current collector for a battery, comprising:
a base material;
adhesive layers positioned on the base material; and
metal mesh layers positioned on the adhesive layers,
wherein the metal mesh layers include a plurality of metal mesh patterns, and holes positioned between the plurality of metal mesh patterns,
the plurality of metal mesh patterns include a lower end and an upper end,
the lower end is in contact with a contact surface of the adhesive layers,
the upper end is located on a distal side of the contact surface,
the upper end is not in contact with the contact surface, and
a width of the upper end is greater than a width of the lower end.

2. The current collector of claim 1 , wherein the adhesive layers are a solder layer, and the solder layer is be formed of lead (Pb), tin (Sn), zinc (Zn), indium (In), cadmium (Cd), bismuth (Bi), or an alloy thereof.

3. The current collector of claim 1 , wherein the adhesive layers include a first adhesive layer and a second adhesive layer, and the metal mesh layers include a first metal mesh layer and a second metal mesh layer,
the first adhesive layer is positioned on a first surface of the base material, and the second adhesive layer is positioned on a second surface of the base material, and
the first metal mesh layer is positioned on the first adhesive layer and the second metal mesh layer is positioned on the second adhesive layer.

4. The current collector of claim 1 , wherein an active material is applied onto the adhesive layers through the holes positioned between the metal mesh patterns.

5. A current collector for a battery, comprising:
a base material;
metal mesh layers formed on a first surface and a second surface of the base material, respectively, and each of the metal mesh layers includes a plurality of metal mesh patterns and holes positioned between the plurality of metal mesh patterns; and
adhesive layers configured to attach the base material and the metal mesh layers,
wherein the adhesive layers include first adhesive layers positioned on the first surface and the second surface of the base material, respectively, and second adhesive layers positioned on the metal mesh layers, and the first adhesive layers and the second adhesive layers are attached,
the plurality of metal mesh patterns include a lower end and an upper end,
the lower end is in contact with a contact surface of the adhesive layers,
the upper end is located on a distal side of the contact surface,
the upper end is not in contact with the contact surface, and
a width of the upper end is greater than a width of the lower end.

6. A current collector for a battery, comprising:
a base material;
metal mesh layers positioned on the base material; and
adhesive layers positioned between the base material and the metal mesh layers,
wherein the metal mesh layers include a plurality of metal mesh patterns, and holes positioned between the plurality of metal mesh patterns,
the plurality of metal mesh patterns include a lower end and an upper end,
the lower end is in contact with a contact surface of the adhesive layers,
the upper end is located on a distal side of the contact surface,
the upper end is not in contact with the contact surface, and
a width of the upper end is greater than a width of the lower end.

7. The current collector of claim 6 , wherein the adhesive layers are a solder layer, and the solder layer is formed of lead (Pb), tin (Sn), zinc (Zn), indium (In), cadmium (Cd), bismuth (Bi), or an alloy thereof.

8. The current collector of claim 6 , wherein the adhesive layers include a first adhesive layer and a second adhesive layer, and the metal mesh layers include a first metal mesh layer and a second metal mesh layer, and
the first adhesive layer is positioned between a first surface of the base material and the first metal mesh layer, and the second adhesive layer is positioned between a second surface of the base material and the second metal mesh layer.

9. The current collector of claim 6 , wherein the adhesive layers include a first adhesive layer and a second adhesive layer, and the metal mesh layers include a first metal mesh layer and a second metal mesh layer,
the first metal mesh layer includes a plurality of first metal mesh patterns, and the second metal mesh layer includes a plurality of second metal mesh patterns, and
the first adhesive layer is positioned between a first surface of the base material and the first metal mesh pattern, and the second adhesive layer is positioned between a second surface of the base material and the second metal mesh pattern.

10. The current collector of claim 6 , wherein an active material is applied onto the base material through the holes positioned between the metal mesh patterns.

11. A current collector for a battery, comprising:
a base material;
adhesive layers positioned on the base material; and
metal mesh layers positioned on the adhesive layers,
wherein the metal mesh layers include a plurality of metal mesh patterns, and holes positioned between the plurality of metal mesh patterns,
the plurality of metal mesh patterns include a lower end and an upper end,
the lower end is in contact with a contact surface of the adhesive layers,
the upper end is located on a distal side of the contact surface,
the upper end is not in contact with the contact surface, and
the width of the metal mesh pattern is increased from the lower end to the upper end.

12. A current collector for a battery, comprising:
a base material;
metal mesh layers formed on a first surface and a second surface of the base material, respectively, and each of the metal mesh layers includes a plurality of metal mesh patterns and holes positioned between the plurality of metal mesh patterns; and
adhesive layers configured to attach the base material and the metal mesh layers,
wherein the adhesive layers include first adhesive layers positioned on the first surface and the second surface of the base material, respectively, and second adhesive layers positioned on the metal mesh layers, and the first adhesive layers and the second adhesive layers are attached,
the plurality of metal mesh patterns include a lower end and an upper end,
the lower end is in contact with a contact surface of the adhesive layers,
the upper end is located on a distal side of the contact surface,
the upper end is not in contact with the contact surface, and
the width of the metal mesh pattern is increased from the lower end to the upper end.

13. A current collector for a battery, comprising:
a base material;
metal mesh layers positioned on the base material; and
adhesive layers positioned between the base material and the metal mesh layers,
wherein the metal mesh layers include a plurality of metal mesh patterns, and holes positioned between the plurality of metal mesh patterns,
the plurality of metal mesh patterns include a lower end and an upper end,
the lower end is in contact with a contact surface of the adhesive layers,
the upper end is located on a distal side of the contact surface,
the upper end is not in contact with the contact surface, and
the width of the metal mesh pattern is increased from the lower end to the upper end.

Assignees

• Korea Inst Mach & Materials

Inventors

• Kim Man
• Lee Joo Yul
• Lee Sang Yeoul
• Jeong Yong Soo
• Chang Do Yon
• Lee Kyu Hwan
• Yang Cheol Nam
• Lee Chang Rae
• Yim Seong Bong
• Lim Dong Chan
• Lim Jae Hong
• Song Young Sup
• Moon Sung Mo
• Cha Su Sub

Classifications

• H01M4/045

  Electrochemical coating; Electrochemical impregnation · CPC title

• H01M2220/30

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

• H01M10/0525

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

• H01M4/0404

  by coating on electrode collectors · CPC title

• H01M4/0402

  Methods of deposition of the material · CPC title