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Electricity-storage-device electrode, manufacturing method therefor, and electricity-storage device using said electrode

An electric storage device and electrode technology, applied in battery electrodes, batteries, circuits, etc., can solve the problems of inability to participate in electrode reactions, high solubility, and slow capacity reduction, and achieve improved electron transfer reactions, excellent energy density, and battery. The effect of improving the response rate

Inactive Publication Date: 2016-02-03
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] However, when using the electrodes disclosed in the above-mentioned patent documents, there is a problem that the capacity gradually decreases as charge and discharge are repeated.
It can be considered that this is caused by the following reasons: the above-mentioned organic low-molecular compound as the electrode active material has a high solubility in the electrolyte, so the electrode active material gradually dissolved in the electrolyte becomes unable to participate as the electrode active material is repeatedly charged and discharged. electrode reaction
[0017] Furthermore, in electricity storage devices using electrode active materials, the capacity density and energy density are not yet sufficient. In particular, in fields requiring lightweight such as portable PCs, lightweight and high-capacity materials are required, but effective materials have not yet been found. s material

Method used

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  • Electricity-storage-device electrode, manufacturing method therefor, and electricity-storage device using said electrode
  • Electricity-storage-device electrode, manufacturing method therefor, and electricity-storage device using said electrode
  • Electricity-storage-device electrode, manufacturing method therefor, and electricity-storage device using said electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0133]

[0134] A composite active material obtained by mixing the polyaniline powder (A) and 1,5-diaminoanthraquinone (B) at a weight ratio (A:B) of 1:1, and acetylene black as a conductive additive (Denka Black, manufactured by Denki Kagaku Kogyo Co., Ltd.), and polytetrafluoroethylene (manufactured by DAIKININDUSTRIES, Ltd., F-302) as a binder, in terms of weight ratio, composite active material: conductive additive: binder is 10 After mixing in the ratio of :80:10 in an agate mortar, a composite electrode was formed on an aluminum mesh current collector by compression molding (4kN). The electrode layer has a thickness (excluding the current collector) of 700 to 800 μm and a weight of about 50 mg.

[0135] The above-mentioned positive electrode, negative electrode, and separator were all placed in a glove box immediately after being dried at 80° C. for 2 hours in a vacuum dryer. Then, the negative electrode, the separator, and the positive electrode were combined in this...

Embodiment 2 and 3

[0147] Next, compounding was carried out so that the weight ratio (A:B) of the polyaniline powder (A) and 1,5-diaminoanthraquinone (B) of the above-mentioned Example 1 was the ratio shown in Table 1, except Other than that, lithium secondary batteries of Examples 2 and 3 were produced in the same manner as in Example 1.

Embodiment 4

[0149] Except having replaced the (B) component of said Example 1 with 1, 4- diaminoanthraquinone, it carried out similarly to Example 1, and produced the lithium secondary battery.

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Abstract

In order to obtain an electricity-storage-device electrode that has a high specific energy and a high energy density, a manufacturing method therefor, and an electricity-storage device using said electrode, this invention provides, as a positive electrode and / or a negative electrode for an electricity-storage device, an electricity-storage-device electrode that contains the following active-material components: (A) a conductive polymer; and (B) an anthraquinone compound that has two or more amino groups and the structure represented by formula (1).

Description

technical field [0001] The present invention relates to an electrode for an electrical storage device, a method for producing the same, and an electrical storage device using 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. In such electrochemical storage devices such as secondary batteries, high capacity and high rate characteristics of materials used as electrodes are desired. [0003] An electrode of an electrical storage device contains an active material capable of intercalating / deintercalating ions. Intercalation / deintercalation of ions in active materials is also called doping / dedoping, and the amount of doping / dedoping per unit of a specific molecular structure is called doping ratio (or do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M4/1399H01M4/36
CPCH01M4/364H01M4/606H01M4/60Y02E60/10H01M4/622H01M10/0525H01M2220/30
Inventor 根岸伸和加治佐由姬森田成纪
Owner NITTO DENKO CORP
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