Composition for electricity storage devices, slurry for electricity storage devices, electrode for electricity storage devices, separator for electricity storage devices, and electricity storage device

A technology of electric storage device and composition, which is applied to non-aqueous electrolyte battery electrodes, battery electrodes, battery pack components and other directions, can solve the problems of deterioration of charging and discharging characteristics of electric storage devices, peeling of active material layers, etc., and achieves the charging and discharging rate Good characteristics and the effect of preventing position shift

Active Publication Date: 2016-01-13
株式会社引能仕材料
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when the electrode / separator laminate is formed by winding or the like, if the electrode and the separator are firmly adhered, problems such as peeling of the active material layer will occur.
If the active material layer peels off, there will be problems such as deterioration of the charge and discharge characteristics of the power storage device

Method used

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  • Composition for electricity storage devices, slurry for electricity storage devices, electrode for electricity storage devices, separator for electricity storage devices, and electricity storage device
  • Composition for electricity storage devices, slurry for electricity storage devices, electrode for electricity storage devices, separator for electricity storage devices, and electricity storage device
  • Composition for electricity storage devices, slurry for electricity storage devices, electrode for electricity storage devices, separator for electricity storage devices, and electricity storage device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2～7

[0234] 6.2. Examples 2-7, Comparative Examples 1-3

[0235] In the "6.1.1. Preparation of binder" of the above-mentioned Example 1, except that the composition of the monomer and the amount of emulsifier were changed appropriately, it was carried out in the same manner as in Example 1, and a binder containing the composition shown in Table 1 was prepared. For the aqueous dispersion of the binder, water was removed under reduced pressure or water was added according to the solid content concentration of the aqueous dispersion, thereby obtaining an aqueous dispersion with a solid content concentration of 40%.

[0236] Next, in the "6.1.2. Preparation of the composition for electrical storage devices" of the above-mentioned Example 1, except that the anti-blocking agent was changed to the type and addition amount described in Table 1, it was the same as that of the above-mentioned Example 1. The compositions S2-S7 and S11-S13 for electrical storage devices were prepared in this m...

Embodiment 8

[0239] 150 parts by mass of water and 0.2 parts by mass of sodium dodecylbenzenesulfonate were put into a separable flask with a capacity of 7 liters, and the inside of the separable flask was sufficiently replaced with nitrogen. On the other hand, 60 parts by mass of water, 0.8 parts by mass of ether sulfate-type emulsifier (trade name "AdekariaSoap SR1025", manufactured by ADEKA Corporation) as an emulsifier in terms of solid content, and a single 20 parts by mass of 2,2,2-trifluoroethyl methacrylate (TFEMA), 10 parts by mass of acrylonitrile (AN), 25 parts by mass of methyl methacrylate (MMA), 2-ethylhexyl acrylate (EHA) 40 mass parts and 5 mass parts of acrylic acid (AA) were fully stirred, and the monomer emulsion containing the mixture of the said monomer was prepared. Thereafter, heating of the inside of the separable flask was started, and when the temperature inside the separable flask reached 60° C., 0.5 parts by mass of ammonium persulfate as a polymerization initia...

Embodiment 14

[0284] 6.7.1. Preparation of slurry for protective film formation

[0285] 20 parts by mass of titanium oxide (product name "KR380", manufactured by Titanium Industry Co., Ltd., rutile type, average particle diameter: 0.38 μm) as inorganic particles was mixed with 100 parts by mass of water, and the amount was 5 parts by mass in terms of solid content relative to the inorganic particles. Composition S1 for an electrical storage device obtained in "6.1.2. Preparation of a composition for an electrical storage device" of Example 1 above and 1 part by mass of a thickener (manufactured by DAICEL Co., Ltd., trade name "CMC1120") , using T.K. FILMICS (R) 56-50 type (manufactured by PRIMIX Co., Ltd.) to perform a mixing and dispersing treatment to prepare a slurry for forming a protective film in which titanium oxide was dispersed.

[0286] 6.7.2. Preparation of positive electrode

[0287] As the positive electrode, the slurry for forming the protective film obtained above was coate...

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Abstract

Provided is a composition for electricity storage devices, which is able to produce an electrode or separator that has excellent blocking resistance, while being capable of effectively preventing positional shift when the electrode and the separator are laminated (namely, exhibiting adequate blocking performance). A composition for electricity storage devices according to the present invention contains a binder, a blocking inhibitor and a liquid medium, and is characterized in that if M1 (parts by mass) represents the content of the binder and M2 (parts by mass) represents the content of the blocking inhibitor, M1 and M2 satisfy the relation 1< M1/M2< 4,000.

Description

technical field [0001] The present invention relates to a composition for an electrical storage device, a slurry for an electrical storage device containing the composition, an electrode for an electrical storage device prepared by coating the slurry on a collector and drying it, and an electrode for an electrical storage device having the slurry on its surface. A separator for an electrical storage device having a protective film formed by applying and drying a material, and an electrical storage device including at least one of the electrode and the separator. Background technique [0002] Positive and negative electrodes (hereinafter also referred to as "electrodes") used in electrical storage devices are prepared by applying a mixture of an active material and a binder to the surface of a current collector as disclosed in JP-A-2013-030449. and drying it to form an active material layer on the surface of the current collector. In addition, in recent years, a technique ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01G11/22H01G11/52H01M2/16H01M4/13H01M4/139H01M50/417H01M50/449
CPCH01G11/52H01M4/13H01M4/622H01M4/623H01G11/38H01M10/4235H01M4/628H01M10/0525Y02E60/10H01M50/446H01M50/46H01M50/449H01M50/417Y02E60/13
Inventor 伊藤一聪篠田智隆宫内裕之
Owner 株式会社引能仕材料
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