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Manufacturing method of electrode, electric storage device, and intermediate laminate member

A manufacturing method and a technology of an electrical storage device, which are applied in the direction of electrode manufacturing, electrode carrier/collector, electrolytic capacitor, etc., can solve problems such as electrode slurry leakage, and achieve the effects of increasing productivity and increasing delivery speed

Inactive Publication Date: 2009-09-30
SUBARU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the electrode paste is applied to a current collector material having through holes, the electrode paste may leak to the back side of the current collector material through the through holes.

Method used

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  • Manufacturing method of electrode, electric storage device, and intermediate laminate member
  • Manufacturing method of electrode, electric storage device, and intermediate laminate member
  • Manufacturing method of electrode, electric storage device, and intermediate laminate member

Examples

Experimental program
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Effect test

Embodiment approach 1

[0063] figure 1 is a perspective view showing the power storage device 10, figure 2 is along figure 1 Line A-A in , schematically shows a cross-sectional view of the internal structure of the power storage device 10 . Such as figure 1 and figure 2 As shown, an electrode lamination unit 12 is accommodated in a laminated film 11 serving as a packaging container. This electrode lamination unit 12 is composed of positive electrodes (electrodes) 13 and negative electrodes (electrodes) 14 that are alternately laminated. A separator 15 is provided between the positive electrode 13 and the negative electrode 14 . In addition, a lithium electrode 16 is arranged to face the negative electrode 14 at the outermost portion of the electrode stack unit 12 . A separator 15 is provided between the negative electrode 14 and the lithium electrode 16 . The three-electrode lamination unit 17 is composed of the above-mentioned electrode lamination unit 12 and the lithium electrode 16 . In...

Embodiment approach 2

[0120] The description of Embodiment 1 relates to a current collector lamination unit in which a plurality of current collector materials are laminated.

[0121] As described in Embodiment 1, one embodiment of this current collector lamination unit is a structure in which current collector materials are stacked via, for example, a thin film material (blocking layer). The current collector lamination unit having the above configuration can increase the transport speed compared to the case where the porous current collector material is transported without inserting the thin film material. For example, horizontal shipments can be made faster. That is, by laminating the current collector material on both surfaces of the film material with a certain degree of adhesive force, the strength of the film material is enhanced when the laminated current collector material having holes is transported.

[0122] In the above-mentioned structure in which the current collector material with o...

Embodiment approach 3

[0163] In the current collector lamination unit described in Embodiments 1 and 2, holes penetrating through the current collector material are formed in the plurality of current collector materials laminated with the barrier layer interposed therebetween. In this through hole, as described in the first embodiment, the electrode paste is applied and then dried to form an electrode composite layer. In forming this electrode composite layer, the electrode composite layer is filled in the via hole depending on the case. In addition, in the first embodiment Image 6 , 10 , 11 exemplifies the structure in which the electrode paste is not filled in the through hole, but it can also be, for example, as Figure 25 , 26 , 27 shown in the filling. Since there is a thin film material as a barrier layer, it is notified that the electrode composite layer formed by drying the electrode paste filled in this way does not come off but remains in the through hole. However, after the electro...

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Abstract

The present invention relates to a manufacturing method of an electrode, an electric storage device and an intermediate laminate member, for enhancing productivity of an electrode provided with a perforated current collector. In a current collector laminating step, a current-collector laminate unit (30) composed of current-collector materials (31 and 32) and a film material (33) is formed. Resist layers (34) having a predetermined pattern are formed on both surfaces of the current-collector laminate unit (30). An etching process is performed with the resist layers (34) used as a mask, whereby through-holes (20a and 23a) are formed in the respective current-collector materials (31 and 32). The resist layers (34) are removed from the current-collector laminate unit. Since the etching process is performed on the plurality of current-collector materials, productivity of an electrode can be enhanced. During the application of the slurry, the film material prevents the leakage of the electrode slurry. Therefore, the current-collector laminate unit can be conveyed in the horizontal direction, whereby the productivity of the electrode can be enhanced.

Description

technical field [0001] The present invention relates to a method of manufacturing an electrode having a porous current collector, an electrical storage device incorporating the electrode having a porous current collector, an intermediate laminate material used as a semi-finished product in the electrode manufacturing process, and the like. Background technique [0002] Electric vehicles, hybrid vehicles, and the like are equipped with power storage devices such as lithium-ion batteries and lithium-ion capacitors. When manufacturing an electrode to be incorporated in an electrical storage device, an electrode paste containing an active material is applied to a current collector material such as metal foil. In addition, the electrode composite layer is usually formed by passing the current collector material through a drying furnace while conveying it in the horizontal direction, and drying the electrode slurry. [0003] In addition, in order to increase the energy density of...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/058H01G9/00H01G9/155H01M4/04H01M4/64H01M10/36H01M10/40
CPCY02T10/7011
Inventor 永井满安东信雄宇都宫隆佐藤丰马场健
Owner SUBARU CORP
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