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Resin composition for power storage device electrode

A technology of resin composition and power storage equipment, which is applied to battery electrodes, non-aqueous electrolyte storage battery electrodes, hybrid capacitor electrodes, etc., which can solve the problems of poor durability, reduced capacity, and damaged ion conductivity, etc., and achieve improved battery performance. properties, good adhesion, and excellent ion permeability

Inactive Publication Date: 2019-04-02
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that especially at low temperatures, the ionic conductivity of the compacted electrode plate is greatly impaired, which is a cause of poor durability and reduced capacity

Method used

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  • Resin composition for power storage device electrode
  • Resin composition for power storage device electrode
  • Resin composition for power storage device electrode

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0267] The polymer particle dispersions of Examples 1 to 4 and Comparative Example 1 shown in Table 1 were prepared using the following raw materials. The abbreviations of the raw materials used in Table 1 and the following examples are as follows.

[0268]

[0269] MMA: methyl methacrylate (manufactured by Wako Pure Chemical Industries, Ltd.)

[0270] EA: Ethyl acrylate (manufactured by Wako Pure Chemical Industries, Ltd.)

[0271] BA: butyl acrylate (manufactured by Wako Pure Chemical Industries, Ltd.)

[0272] 2-EHA: 2-ethylhexyl acrylate

[0273]

[0274] AA: Acrylic acid (manufactured by Wako Pure Chemical Industries, Ltd.)

[0275]

[0276] EGDMA: Ethylene glycol dimethacrylate (manufactured by Wako Pure Chemical Industries, Ltd.)

[0277]

[0278] APS: ammonium persulfate

[0279] KPS: potassium persulfate

[0280]

[0281] Na: sodium

[0282] Li: Lithium

[0283] NH 4 : Ammonium

[0284]

[0285] Sodium dodec...

Embodiment 1

[0286] [Polymer particle dispersion of Example 1]

[0287] 194 g of EA as the monomer (A-1), 6 g of AA as the monomer (B-1), 0.20 g of EGDMA as the monomer (C) [relative to the monomers (A-1) and (B-1) The total number of moles is 0.1 mol%] and 340 g of ion-exchanged water were added to a glass four-necked separable flask with an inner capacity of 1 L, and stirred for a predetermined time (0.5 hours) under a nitrogen atmosphere. Next, after raising the temperature of the reaction solution in the flask to around 70°C, a polymerization initiator solution in which 1 g of APS was dissolved in 10 g of ion-exchanged water was added to the flask, and the reaction solution in the flask was kept at around 70 to 75°C. For 6 hours, the polymerization and aging proceeded to obtain a polymer particle dispersion. Thereafter, the polymer particle dispersion in the flask was cooled to room temperature, and after adding 29.14 g of 1N LiOH aqueous solution to neutralize, the aggregate was ...

Embodiment 2

[0288] [Polymer particle dispersion of Example 2]

[0289] Obtained in the same manner as in Example 1 except that the amount of the monomer (C) used was changed to 1.0 g [0.5 mol% relative to the total number of moles of the monomers (A-1) and (B-1)] Polymer Particle Dispersion of Example 2. Table 1 shows the amount and type of each component used in the preparation of the polymer particle dispersion of Example 2.

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Abstract

In one embodiment of the present invention, a resin composition for a power storage device electrode is provided having excellent ion permeability while good binding to the electrode is ensured. Thisembodiment of the present invention pertains to a resin composition for a power storage device electrode that includes polymer particles, wherein the polymer particles have ion permeability, and the elasticity variation [(post-processing elasticity) / pre-processing elasticity)] of the polymer particles before and after processing with an electrolyte is 30% or less.

Description

technical field [0001] The present invention relates to a resin composition for an electrical storage device electrode. Background technique [0002] In recent years, the demand for power storage equipment has been increasing due to the popularization of smartphones, zero-emission regulations in the automobile market, and the expansion of natural energy utilization. Therefore, the demand for miniaturization, weight reduction, and increase in capacity of electric storage devices is expected, and there is an increasing demand for higher output and higher energy density for automobiles and the like. In response to such demands, the development of electric storage devices such as lithium-ion secondary batteries, alkali-ion secondary batteries, electric double-layer capacitors, and lithium-ion capacitors is being promoted. [0003] This type of electrical storage device usually includes an electrode in which a composite material layer containing an active material or the like is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62C08F220/06C08F220/12C08F222/02H01G11/38H01M4/13
CPCC08F220/06C08F220/12C08F222/02H01G11/38H01M4/622H01M2004/027H01M4/133H01M4/1393Y02E60/10C08F220/18C08F220/56H01M10/052C08F220/14C08F2/22H01M4/667H01M2004/028
Inventor 平石笃司桑原一夫高桥庆隐岐一雄后藤英树
Owner KAO CORP