Positive electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery using positive electrode, and method for producing positive electrode

A non-aqueous electrolyte, secondary battery technology, applied in non-aqueous electrolyte battery electrodes, secondary battery manufacturing, non-aqueous electrolyte batteries, etc. High followability improvement effect, excellent adhesion and followability, and battery performance improvement effect

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

Therefore, a non-aqueous electrolyte secondary battery using a conductive polymer as a positive electrode active material basically requires a large amount of electrolyte solution, and there is a problem that it cannot contribute to the miniaturization of the battery.

Method used

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  • Positive electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery using positive electrode, and method for producing positive electrode
  • Positive electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery using positive electrode, and method for producing positive electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] (Production of positive electrode using polyaniline powder, polyanionic acid and plasticizer)

[0101] 4.69 g of the above-mentioned polyaniline powder in a reduced and dedoped state was mixed with 0.60 g of conductive carbon black (manufactured by Denka Kogyo Co., Ltd., DENKA BLACK) powder, and then added to the above-mentioned polyacrylate lithium salt adjusted to a concentration of 4.20% by weight. In 26.77g of aqueous solution, mix thoroughly with a spatula. Next, as a plasticizer, 0.33 g of a 20% by weight aqueous solution of glycerin (manufactured by Wako Pure Chemical Industries, Ltd., average molecular weight 92) was added, and then ultrasonic treatment was performed for 1 minute with an ultrasonic homogenizer, and then a film rotary high-speed mixer was used. (manufactured by PRIMIX Corporation, FILMICS40-40 type) was slightly dispersed by applying a high shear force to obtain a fluid paste. The paste was further degassed by vacuum suction bell jar and rotary ...

Embodiment 2～19

[0104] (Fabrication of positive electrodes using polyaniline powder, containing polyanionic acids, and containing different types and amounts of plasticizers)

[0105] The positive electrodes of Examples 2 to 19 were produced in the same manner as the production of the positive electrode of Example 1 above except that the ratios of the respective materials were replaced with those shown in Table 1 below.

[0106] [Table 1]

[0107]

[0108] In addition, the detail of the plasticizer used in said Table 1 is shown in following Table 2.

[0109] [Table 2]

[0110] Abbreviation

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Abstract

In order to provide a positive electrode with excellent peeling resistance and bending resistance, and a nonaqueous electrolyte secondary battery having excellent gravimetric energy density and little dependency on the amount of electrolyte, this positive electrode: is used in a nonaqueous electrolyte secondary battery provided with said positive electrode and a negative electrode, a separator disposed between the positive electrode and negative electrode, and an electrolyte having ion conductivity; and contains (a) a conductive polymer, (b) a polyanionic acid and / or a metal salt thereof, and (c) a plasticizer.

Description

technical field [0001] The present invention relates to a positive electrode for a non-aqueous electrolyte secondary battery, a non-aqueous electrolyte secondary battery using the same, and a method for producing the same. Non-aqueous electrolyte secondary battery having little dependence on liquid volume and method for manufacturing the same. 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 secondary batteries, lithium-ion secondary batteries that use lithium-containing transition metal oxides such as lithium manganese oxide and lithium cobaltate as the electrode active material and use carbon materials that can intercalate and deintercalate lithium ions for the negative electrode are widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M4/38H01M4/587H01M4/62H01M10/0566H01M10/0585
CPCY02E60/122H01M4/608H01M4/1399H01M4/62H01M10/0525Y02T10/7011H01M4/137H01M4/38H01M4/587H01M4/628H01M10/0566H01M10/0585H01G11/48H01M4/622H01M10/052Y02E60/10Y02T10/70Y10T29/4911Y02P70/50H01M4/13H01M4/624H01M4/625H01M10/0413H01M10/0436H01M2004/028H01M2220/20H01M2220/30Y02E60/13
Inventor 武弘义松浦爱美安藤洋平
Owner NITTO DENKO CORP
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