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Electrode for use in electrochemical device and manufacturing method therefor

An electrochemical and electrode technology, applied in the field of electrodes for electrochemical devices, can solve problems such as electrolyte resistance deterioration, and achieve the effect of excellent discharge characteristics

Inactive Publication Date: 2013-10-30
SUMITOMO ELECTRIC IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that when the potential of the porous nickel body as the positive electrode (first electrode) collector becomes high in the organic electrolyte solution, the resistance of the electrolyte solution of the porous nickel body becomes poor.

Method used

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  • Electrode for use in electrochemical device and manufacturing method therefor
  • Electrode for use in electrochemical device and manufacturing method therefor
  • Electrode for use in electrochemical device and manufacturing method therefor

Examples

Experimental program
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Effect test

preparation example Construction

[0040] (Preparation of Porous Resin Molded Article)

[0041] A porous resin molded body having a three-dimensional network structure and interconnected pores is produced. As a material of the porous resin molded body, any resin can be selected. For example, a foamed resin molded body made of polyurethane, melamine resin, polypropylene, polyethylene, or the like can be used. Although expressed as a foamed resin molded body, a resin molded body having an arbitrary shape may be selected as long as the resin molded body has pores communicating with each other (communicating pores). For example, instead of a foamed resin molded body, a molded body made of resin fibers entangled into a nonwoven fabric may be used. The foamed resin molded body preferably has a porosity of 80% to 98% and a pore diameter of 50 μm to 500 μm. Polyurethane foam and foamed melamine resins have high porosity, high pore connectivity, and excellent thermal decomposability, and thus are suitable for use as ...

Embodiment

[0123] Hereinafter, the present invention will be described in more detail with reference to examples. However, it should be understood that the present invention is not limited to these Examples.

[0124] (formation of conductive layer)

[0125] A production example of the aluminum porous body will be specifically described below. As a foamed resin molded body, a polyurethane foam having a thickness of 1 mm, a porosity of 95%, and about 50 cells (cells) per inch was prepared and cut into 100 mm×30 mm squares. The polyurethane foam was immersed in the carbon suspension and then dried. Thus, a conductive layer with carbon particles adhered to the entire surface was formed. The suspension contained 25% by mass of graphite and carbon black, and also contained a resin binder, penetrant and defoamer. The particle diameter of carbon black was 0.5 μm.

[0126] (Molten Salt Plating)

[0127] A polyurethane foam with a conductive layer on the surface is fixed as a workpiece on a ...

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Abstract

Provided is electrochemical device, such as a nonaqueous electrolyte battery, which has excellent discharge characteristics and the like by forming a thick electrode using a metal porous body, such as an aluminum porous body, as a current collector. An electrode for an electrochemical device includes a metal porous body filled with an active material, in which the metal porous body is sheet-like and is a stacked porous body in which a plurality of single-layer metal porous bodies are stacked and electrically connected to each other. The metal porous body may be an aluminum porous body having a three-dimensional network structure.

Description

technical field [0001] The present invention relates to an electrode for an electrochemical device including a metal porous body such as an aluminum porous body and a manufacturing method thereof. The term "electrochemical device" refers to nonaqueous electrolyte batteries such as lithium secondary batteries, and capacitors containing nonaqueous electrolytes (hereinafter referred to as "capacitors"), lithium ion capacitors containing nonaqueous electrolytes (hereinafter referred to as "lithium ion capacitors") )Wait. Background technique [0002] In recent years, research has been actively conducted on electrochemical devices such as lithium batteries (such as lithium secondary batteries), capacitors, and lithium ion capacitors used in portable information terminals, and power storage devices for electric vehicles and household use. An electrochemical device includes a first electrode, a second electrode, and an electrolyte. In the case where the electrochemical device is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/80H01G11/68H01G11/86H01M4/13H01M4/139H01M4/66H01M10/052H01M10/0585H01G11/66
CPCH01M4/808H01M10/0585H01M10/052H01M4/043H01M4/745Y02E60/122H01M10/0436Y02E60/13H01M4/661H01G11/68H01M4/13H01G11/66H01G9/016Y10T29/49204Y02E60/10H01G11/74Y02P70/50H01M4/139H01M4/80H01G11/22
Inventor 细江晃久奥野一树太田肇木村弘太郎后藤健吾境田英彰西村淳一
Owner SUMITOMO ELECTRIC IND LTD