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Nonaqueous electrolyte secondary battery, and positive electrode used therein

A non-aqueous electrolyte, secondary battery technology, applied in non-aqueous electrolyte batteries, secondary batteries, battery electrodes, etc., can solve the problem of not helping the miniaturization of power storage devices, and achieve the effect of high weight energy density

Inactive Publication Date: 2015-08-19
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the rocking-chair type secondary battery has the advantage that a small amount of electrolyte solution does not matter, but the secondary battery having the above-mentioned conductive polymer as the positive electrode active material cannot do this, and cannot contribute to the miniaturization of the power storage device.

Method used

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  • Nonaqueous electrolyte secondary battery, and positive electrode used therein
  • Nonaqueous electrolyte secondary battery, and positive electrode used therein
  • Nonaqueous electrolyte secondary battery, and positive electrode used therein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123]

[0124] [Manufacture of positive electrode sheet containing conductive polyaniline powder]

[0125] 3.95 g of the aforementioned conductive polyaniline powder and 0.5 g of conductive carbon black powder (DENKA BLACK, manufactured by Denka Kogyo Co., Ltd.) were mixed, and then added to the aforementioned 6.66 g of polyvinylphosphonic acid aqueous solution and 9 g of ion-exchanged water , After fully mixing with a spatula, disperse with an ultrasonic homogenizer for 6 minutes to obtain a fluid dispersion. The dispersion was lightly dispersed with a high-shearing force (peripheral speed 20 m / min, stirring for 30 seconds) with a thin-film rotary high-speed mixer (manufactured by PRIMIX Corporation, FILMICS40-40 type) to obtain a fluid paste agent. Furthermore, this paste was stirred and defoamed using a rotation / revolution mixer (manufactured by THINKY, Awatori Rentaro MH-500).

[0126] Next, using a desktop type automatic coating device (manufactured by TESTER SANGYO ...

Embodiment 2

[0137]

[0138] [Manufacture of positive electrode sheet containing conductive polyaniline powder]

[0139] 2.67 g of the aforementioned conductive polyaniline powder was mixed with 0.4 g of conductive carbon black powder (DENKA BLACK, manufactured by Denka Kogyo Co., Ltd.), and then added to polyphosphoric acid (manufactured by KISHIDA CHEMICAL Co., Ltd., 020-63075 ) 1.2 g and 1.8 g of ion-exchanged water, thoroughly mixed with a spatula, and then dispersed with an ultrasonic homogenizer for 6 minutes to obtain a fluid dispersion liquid paste. This paste was stirred and defoamed using a rotation / revolution mixer (manufactured by THINKY, Awatori Rentaro MH-500).

[0140] Next, using a desktop type automatic coating device (manufactured by TESTER SANGYO CO,.LTD.), the above-mentioned defoaming-treated paste was coated with a scraper-type applicator with a micrometer at a coating speed of 10 mm / sec. On an etched aluminum foil for an electric double layer capacitor (manufactur...

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Abstract

In order to obtain a novel nonaqueous electrolyte secondary battery having a high gravimetric energy density that far exceeds the gravimetric energy density of secondary batteries of the prior art, this nonaqueous electrolyte secondary battery has an electrolyte layer (3), and a positive electrode (2) and a negative electrode (4) disposed so as to sandwich the electrolyte layer. The positive electrode (2) contains (a) a conductive polymer, and (b) a phosphorus-containing polymer. The negative electrode (4) contains a material that allows a base metal or base metal ions to be inserted and eliminated.

Description

technical field [0001] The present invention relates to a nonaqueous electrolytic solution secondary battery and a positive electrode used therefor, and specifically relates to a nonaqueous electrolytic solution secondary battery excellent in gravimetric energy density and a positive electrode therefor. Background technique [0002] In recent years, with the advancement and development of electronic technology in portable PCs, mobile phones, and portable data terminals (PDAs), secondary batteries that can be repeatedly charged and discharged have been widely used as power storage devices for these electronic devices. [0003] Among the above-mentioned secondary batteries, compared with the so-called reserve type secondary batteries, lithium-containing transition metal oxides such as lithium manganese oxide and lithium cobaltate are used as electrode active materials in the positive electrode, and lithium-containing transition metal oxides such as lithium cobaltate are used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M4/36H01M4/40H01M4/60H01M4/62H01M10/0566
CPCC08L65/00Y02E60/122C08G2261/51C08G73/0266H01M10/052Y02T10/7011H01M4/606C08L79/02H01M4/604H01M4/36H01M4/40H01M4/62H01M10/0525H01M10/0566H01B1/128Y02E60/10C08L43/02C08L85/02H01M4/137H01M2004/027H01M2004/028Y02T10/70
Inventor 水池敦子阿部正男
Owner NITTO DENKO CORP