ELECTRODE ASSEMBLY COMPRISING FIBER-SHAPED STRUCTURES

• US 20170033364A1
• Filed: 09/27/2016
• Published: 02/02/2017
• Est. Priority Date: 07/02/2010
• Status: Active Grant

• Current Assignee: Jenax Inc.
• Original Assignee: Jenax Inc.
• Inventors: Kim, Kwon Seok
• Granted Patent: US 9,997,787 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 2004/025 with shapes other than plane or cylindrical
• CPC Class Codes: H01M 4/00 Electrodes
• CPC Class Codes: H01M 4/13 Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
• CPC Class Codes: H01M 4/70 characterised by shape or form
• CPC Class Codes: H01M 4/72 Grids
• CPC Class Codes: H01M 4/74 Meshes or woven material; Expanded metal
• CPC Class Codes: H01M 4/806 Nonwoven fibrous fabric containing only fibres
• CPC Class Codes: H01M 50/46 Separators, membranes or diaphragms characterised by their combination with electrodes
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

The present invention relates to an electrode assembly comprising fiber-shaped structures. The electrode assembly for a battery according to one embodiment of the present invention comprises: a first electrode including a plurality of first fiber-shaped structures extending in a first direction; a second electrode including a plurality of second fiber-shaped structures which extend in a second direction other than the first direction, and the polarities of which are different from the polarities of the first structures; and a first separator film interposed between the first structures and the second structures which intersect with each other, so as to separate the first structures and the second structures from each other.

Claims

1-19. -19. (canceled)

20. An electrode assembly comprising:

an isolation matrix;

a first electrode comprising a plurality of first structures that have fibrous shape, and pass through the isolation matrix and extend on a first plane in the isolation matrix in a first direction to be spaced apart from one another; and

a second electrode comprising a plurality of second structures that have fibrous shape, and pass through the isolation matrix and extend on a second plane, which is spaced apart from the first plane to be parallel to the first plane, in the isolation matrix in a second direction different from the first direction to cross the first structures.

21. The electrode assembly of claim 20, further comprising:

a third electrode comprising a plurality of third structures that have fibrous shape and polarity opposite to polarity of the first structures, and extend on the first plane in the first direction to alternate with the first structures; and

a fourth electrode comprising a plurality of fourth structures that have fibrous shape and polarity opposite to polarity of the second structures, and extend on the second plane in the second direction to alternate with the second structures.

22. The electrode assembly of claim 20, wherein a plurality of the first planes and a plurality of the second planes are provided to form a multi-layered structure.

23. The electrode assembly of claim 20, wherein each of the first structures and the second structures comprises a current collector core and an active material layer that surrounds the current collector core.

24. The electrode assembly of claim 20, wherein only ones of the first structures and the second structures selectively further comprise a solid electrolyte layer that surrounds the active material layer.

25. The electrode assembly of claim 20, wherein the isolation matrix is any one of a micro-porous film, a woven fabric, a nonwoven fabric, an intrinsic solid polymer electrolyte film, a gel solid polymer electrolyte film, and a combination thereof.

26. The electrode assembly of claim 20, wherein a thickness of each of the first and second structures ranges from 400 μ

m to 2,000 μ

m, and a distance between the first and second structures ranges from 2 μ

m to 400 μ

m.

27. The electrode assembly of claim 20, wherein a distance between the first and second structures is less than a thickness of each of the first and second structures.

42. The electrode assembly of claim 21, wherein a plurality of the first planes and a plurality of the second planes are provided to form a multi-layered structure.

43. The electrode assembly of claim 21, wherein each of the first structures and the second structures comprises a current collector core and an active material layer that surrounds the current collector core.

44. The electrode assembly of claim 21, wherein only ones of the first structures and the second structures selectively further comprise a solid electrolyte layer that surrounds the active material layer.

45. The electrode assembly of claim 21, wherein the isolation matrix is any one of a micro-porous film, a woven fabric, a nonwoven fabric, an intrinsic solid polymer electrolyte film, a gel solid polymer electrolyte film, and a combination thereof.

46. The electrode assembly of claim 21, wherein a thickness of each of the first and second structures ranges from 400 μ

m to 2,000 μ

m, and a distance between the first and second structures ranges from 2 μ

m to 400 μ

m.

28. An electrode assembly comprising:

an isolation matrix;

a first electrode comprising a plurality of first structures that have fibrous shape, and pass through the isolation matrix and extend on a first plane in the isolation matrix in a first direction to be spaced apart from one another; and

a second electrode comprising a plurality of second structures that have fibrous shape, and pass through the isolation matrix and extend on the first plane in a second direction different from the first direction such that the second structures and the first structures cross each other as weft threads and warp threads.

29. The electrode assembly of claim 28, further comprising a second cathode and a second anode respectively comprising a plurality of third structures and a plurality of fourth structures which have fibrous shapes and extend on a second plane, which is spaced apart from the first plane to be parallel to the first plane, in the isolation matrix such that the third and fourth structures and the first and second structures cross each other as weft threads and warp threads.

30. The electrode assembly of claim 28, wherein each of the first structures and the second structures comprises a current collector core and an active material that surrounds the current collector core.

31. The electrode assembly of claim 28, wherein only ones of the first structures and the second structures selectively further comprise a solid electrolyte layer that surrounds the active material layer.

32. The electrode assembly of claim 28, wherein the isolation matrix comprises an intrinsic solid polymer electrolyte film or a gel solid polymer electrolyte film.

33. The electrode assembly of claim 28, wherein a thickness of each of the first and second structures ranges from 400 μ

m to 2,000 μ

m, and a distance between the first and second structures ranges from 2 μ

m to 400 μ

m.

34. The electrode assembly of claim 28, wherein a distance between the first and second structures is less than a thickness of the first and second structures.

35-41. -41. (canceled)