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Collector, electrode structure, nonaqueous electrolyte cell, and electricity storage component

A current collector and conductivity technology, which is applied in the fields of non-aqueous electrolyte batteries or power storage components, current collectors, and electrode structures, can solve the problems of separator melting and short circuit, and achieve the effect of sufficient conductivity

Inactive Publication Date: 2015-03-18
FURUKAWA ELECTRIC CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, not only does the spacer at a location away from the heat generating part melt, but also the spacer shrinks due to heat, which may conversely cause a short circuit.
In this way, there is room for improvement in the method of preventing heat generation caused by internal short circuits

Method used

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  • Collector, electrode structure, nonaqueous electrolyte cell, and electricity storage component
  • Collector, electrode structure, nonaqueous electrolyte cell, and electricity storage component
  • Collector, electrode structure, nonaqueous electrolyte cell, and electricity storage component

Examples

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Embodiment

[0090] Hereinafter, although an Example demonstrates this invention further, this invention is not limited to these.

[0091]

[0092] Based on Table 1, the coating amounts of various resins were mixed and used. As the olefin-based resins, aqueous emulsions having a solid content of 5 to 40% by weight were used. Based on the DSC chart of the coating film, the mixture of polypropylene and polyethylene in Example 18 was mixed so that the addition ratio of polypropylene became 50%.

[0093]All PVDF resins used N-methyl-2-pyrrolidone solutions with a solid content of 10 to 15% by weight. As the epoxy resin, a solution obtained by dissolving a bisphenol A resin and a urea resin in methyl ethyl ketone at a solid content of 20% by weight was used. As the polyester resin, a solution obtained by dissolving a polyester resin produced by an esterification reaction between isophthalic acid and ethylene glycol in xylene at a solid content of 20% by weight was used. As the polyurethane...

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PUM

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Abstract

Provided is a collector having a PTC layer having leeway for thermal expansion during an increase in temperature while ensuring sufficient electroconductivity at regular temperatures. According to the present invention, there is provided a collector comprising an electroconductive substrate and a resin layer provided to at least one surface of the electroconductive substrate. The resin layer includes an organic resin and electroconductive particles. The amount of resin layer adhering on the electroconductive substrate is 0.5 to 20 g / m2. The Rz (ten-point average roughness) of the surface of the resin layer is 0.4 to 10 mum. The Sm (average interval between concavities and convexities) of the surface of the resin layer is 5 to 200 mum. The average of the resistance of the resin layer, measured by the two-terminal method, is 0.5 to 50 Omega.

Description

technical field [0001] The present invention relates to a current collector, an electrode structure, a nonaqueous electrolyte battery, or an electrical storage device. Background technique [0002] Due to its high energy density, the use of lithium batteries in electronic devices such as mobile phones and notebook computers has expanded. Lithium batteries use lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, etc. as positive electrode active materials, and graphite, etc., as negative electrode active materials. A lithium battery is generally composed of electrodes containing these active materials, a separator as a porous sheet, and an electrolytic solution in which a lithium salt is dissolved. Such a lithium secondary battery has high battery capacity and output, good charge and discharge characteristics, and relatively long durability life. [0003] Lithium batteries have an advantage of high energy density, but on the other hand, they have a problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/02H01M4/13
CPCH01M4/668H01M10/052H01M4/667H01M4/13H01M2200/106H01M2004/021H01M4/661Y02E60/10Y02P70/50H01M10/0525H01G11/28H01G11/56H01G11/68
Inventor 加藤治盛岛泰正伊藤贵和原英和饭田恭宏片冈次雄井上光哉山部乡史本川幸翁齐藤聪平八重樫起郭
Owner FURUKAWA ELECTRIC CO LTD
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