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Dual-mode electricity storage device

A power storage device, a dual-mode technology, applied to non-aqueous electrolyte battery electrodes, circuits, electrical components, etc., can solve the problems of being unable to form a rocking chair-type secondary battery and making contributions to the miniaturization of power storage devices

Inactive Publication Date: 2014-12-03
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a carbon material capable of intercalating and deintercalating lithium ions is used as the negative electrode active material, it is impossible to constitute a rocking-chair type secondary battery of a cation transfer type in which cations move between both electrodes during charge and discharge.
That is, the rocking-chair type secondary battery has the advantage that a small amount of electrolyte solution is enough, but the above-mentioned secondary battery having a conductive polymer as the positive electrode active material is not good, and cannot contribute to the miniaturization of the power storage device.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121]

[0122] 20.5 g of the lithiated polyacrylic acid aqueous solution prepared as the above Y component was prepared.

[0123] After mixing 4 g of polyaniline powder in a reduced and dedoped state prepared as the above-mentioned X component and 0.5 g of conductive carbon black (DENKA BLACK, manufactured by Denki Kagaku Kogyo Co., Ltd.), it was added to the above-mentioned 4.4% by weight concentration In 20.5 g of polyacrylic acid aqueous solution, fully stir with a spatula. This was subjected to ultrasonic treatment with an ultrasonic homogenizer for 1 minute to obtain a fluid paste. The paste was further degassed using a vacuum suction bell and a rotary pump.

[0124] Using a desktop automatic coating device (manufactured by TESTER SANGYO CO., LTD.), using a blade coater with a micrometer, the solution coating thickness was adjusted to 360 μm, and the above-mentioned defoaming was carried out at a coating speed of 10 mm / sec. The paste was coated on an etched aluminum ...

Embodiment 2～6、 comparative example 1～5

[0133] In the polyaniline sheet electrode (positive electrode) of Example 1, in order to adjust the value of A / B, the value of A / C, etc. as described later, the weight concentration when dissolving polyacrylic acid as Y component in water, The coating thickness of the solution obtained by using a knife coater with a micrometer, the drying temperature of a hot plate, and the pressing pressure of a vacuum press were changed to the values ​​described in the following [Table 1], and were the same as in Example 1 except that Do the same to make laminated cells.

[0134] [Table 1]

[0135]

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Abstract

Provided is a dual-mode electricity storage device with superior capacity density and having an electrolyte layer (3), and a positive electrode (2) and a negative electrode (4) provided opposing one another so as to sandwich the electrolyte layer therebetween, wherein the positive electrode (2) comprises at least the substances (X) and (Y), with (Y) being fixed within the positive electrode. In addition, when the anion amount of (Y) per the apparent volume (1L) of the positive electrode (2) is A moles and the anion amount of the electrolyte existing in the voids within the positive electrode per the apparent volume (1L) of the positive electrode (2) is B moles, the value of A / B is 1.29-2.96. In addition, the negative electrode (4) contains the substance (Z), and both cations and anions are replenished in the positive electrode during charging-discharging. (X) A positive electrode substance the conductivity of which is changed by the insertion / desorption of ions (Y) An anionic material (Z) A negative electrode substance capable of inserting / desorbing metals or ions

Description

technical field [0001] The present invention relates to an electrical storage device, and specifically relates to a novel dual-mode electrical storage device having excellent high capacity density and high energy density. Background technique [0002] In recent years, with the advancement and development of electronic technologies such as laptop computers, 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, it is desired to increase the capacity of materials used as electrodes. [0003] The electrodes of the electricity storage device contain an active material capable of intercalating and deintercalating ions. The intercalation and deintercalation of ions in the active material are also called so-called doping and dedoping (or sometimes referred to as "dope and dedo...

Claims

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Application Information

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IPC IPC(8): H01M4/13H01M4/36H01M4/60
CPCH01M4/36H01M4/60H01M2004/021H01M4/13Y02E60/122Y02E60/10Y02P70/50
Inventor 岸井丰植谷庆裕松浦爱美加治佐由姬阿部正男大谷彰
Owner NITTO DENKO CORP
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