Metal-ion secondary battery

Patent metadata

Field	Value
Publication number	US-11101467-B2
Application number	US-201715671402-A
Country	US
Kind code	B2
Filing date	Aug 8, 2017
Priority date	Sep 22, 2016
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A metal-ion secondary battery is provided. The metal-ion secondary battery includes a positive electrode. The positive electrode includes at least one current-collecting layer and at least one active layer, wherein the current-collecting layer and the active layer are mutually stacked, and the current-collecting layer has at least one first through-hole.

First claim

What is claimed is:

1. A metal-ion secondary battery, comprising:
a positive electrode, a negative electrode, a separator, and an electrolyte, wherein the separator is disposed between the positive electrode and the negative electrode, and wherein the positive electrode comprises:
at least one current-collecting layer; and
at least one active layer, wherein the current-collecting layer and the active layer are mutually stacked, and the current-collecting layer has at least one first through-hole; and
at least one diffusion layer, wherein the diffusion layer has a network structure and the diffusion layer is carbon paper, carbon net, carbon fiber, nonwoven fabric, fiber cloth or a combination thereof,
wherein the active layer has at least one second through-hole, and wherein the diffusion layer directly contacts the current-collecting layer.

2. The metal-ion secondary battery as claimed in claim 1 , wherein the negative electrode comprises aluminum metal or aluminum alloy.

3. The metal-ion secondary battery as claimed in claim 1 , wherein the current-collecting layer has a porosity between 0.1% and 50%.

4. The metal-ion secondary battery as claimed in claim 1 , wherein the first through-hole has an aspect ratio between 1:1.5 and 1:10000.

5. The metal-ion secondary battery as claimed in claim 1 , wherein the first through-hole is a square hole, a rectangle-shaped hole, a round hole, a polygon-shaped hole, an irregular-geometric-shaped hole, or a combination thereof.

6. The metal-ion secondary battery as claimed in claim 1 , wherein the active layer has a porosity between 0.1% and 50%.

7. The metal-ion secondary battery as claimed in claim 6 , wherein the second through-hole is a square hole, a rectangle-shaped hole, a round hole, a polygon-shaped hole, an irregular-geometric-shaped hole, or a combination thereof.

8. The metal-ion secondary battery as claimed in claim 6 , wherein a projection of the first through-hole onto a reference plane parallel to the current-collecting layer and the active layer completely or partially overlaps with, or does not overlap with a projection of the second through-hole onto the reference plane.

9. The metal-ion secondary battery as claimed in claim 1 , wherein the active layer comprises an active material.

10. The metal-ion secondary battery as claimed in claim 9 , wherein the active material comprises expanded graphite, nature graphite, artificial graphite, mesophase carbon microbeads, pyrolytic graphite, foamed graphite, layered graphene, flake graphite, or a combination thereof.

11. The metal-ion secondary battery as claimed in claim 9 , wherein the active material comprises carbon material, nanoscale metal line, microscale metal line, nanoscale transition metal particle, microscale transition metal particle, or a combination thereof.

12. The metal-ion secondary battery as claimed in claim 1 , wherein the diffusion layer is disposed on a surface of the current-collecting layer reverse to the active layer.

13. The metal-ion secondary battery as claimed in claim 1 , wherein the diffusion layer has at least one third through-hole, and the third through-hole is a square hole, a rectangle-shaped hole, a round hole, a polygon-shaped hole, an irregular-geometric-shaped hole, or a combination thereof.

14. The metal-ion secondary battery as claimed in claim 13 , wherein a projection of the first through-hole onto a reference plane parallel to the current-collecting layer, the active layer, and the diffusion layer completely or partially overlaps with, or does not overlap with a projection of the second through-hole onto the reference plane and/or a projection of the third through-hole onto the reference plane.

15. The metal-ion secondary battery as claimed in claim 1 , wherein the current-collecting layer comprises a metal foil, conductive adhesive, conductive polymer, carbon paper, alloy, or carbon cloth.

16. The metal-ion secondary battery as claimed in claim 1 , wherein the thickness of the current-collecting layer is between 1 μm and 200 μm.

17. The metal-ion secondary battery as claimed in claim 1 , wherein the electrolyte comprises an ionic liquid.

Assignees

• Ind Tech Res Inst

Inventors

• Chiang Chien-Chih
• Chen Kuang-Yao
• Wu Chun-Hsing
• Yang Chang-Chung
• Chang Wen-Sheng

Classifications

• H01M4/80

  Porous plates, e.g. sintered carriers · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title

• H01M2300/0028

  characterised by the solvent · CPC title

• H01M4/133 Primary

  Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01M2300/0045

  Room temperature molten salts comprising at least one organic ion · CPC title