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Hydrogel and uses therefor

A hydrogel, unsaturated technology, applied in the direction of electrolyte immobilization/gelation, aqueous electrolyte, structural parts, etc., can solve the problems of reducing electrolyte, low alkali resistance of lithium ion conductive solid electrolyte, etc. Effects of increase in interface resistance, excellent mechanical strength, and excellent ionic conductivity

Active Publication Date: 2021-03-19
SEKISUI PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, in metal-air batteries using lithium, the alkali resistance of the lithium-ion conductive solid electrolyte is low, so it is desired to lower the pH of the electrolyte solution.

Method used

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  • Hydrogel and uses therefor
  • Hydrogel and uses therefor
  • Hydrogel and uses therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1a

[0234] 20 parts by mass of acrylic acid (manufactured by Toagosei Co., Ltd.) as a monofunctional monomer and N,N',N"-triacryloyldiethylenetriamine (Fuji Film Co., Ltd., FAM301, melting point 89 ° C) 0.34 parts by mass, 80 parts by mass of ion-exchanged water and stirred. Add 0.20 parts by mass of Omnirad1173 (manufactured by BASF Japan Ltd.) as a polymerization initiator to the solution, and use a magnetic stirrer (RS-6AR manufactured by As One Co., Ltd.) was stirred to prepare a hydrogel precursor. A 2mm thick silicon frame was placed on the peelable PET film, and after injecting the hydrogel precursor in the frame, before the hydrogel A peelable PET film is placed on the body. After that, in a small-sized UV polymerizer (manufactured by JATEC Corporation, J-cure1500, metal halide lamp model name MJ-1500L), carry out the process at a conveyor speed of 0.4m / min and a distance of 150mm between workpieces. Under the conditions of irradiation energy 7000mJ / cm 2 The UV-ray proces...

Embodiment 2a

[0237] Change the multifunctional monomer to N,N'-{[(2-acrylamide-2-[(3-acrylamide propoxy)methyl]propane-1,3-diyl)bis(oxyl) A hydrogel was obtained in the same manner as in Example 1a except that 0.66 parts by mass of bis(propane-1,3-diyl)}bisacrylamide (manufactured by Fujifilm Corporation, FAM401, melting point 107° C.) was used. Evaluation of the swelling properties of the obtained hydrogel, a puncture test after immersion in an alkaline solution, a DC polarization test, a charge-discharge test, and an appearance evaluation after immersion in an electrolyte solution were performed.

Embodiment 3a

[0239] In addition to changing the polyfunctional monomer to 0.47 parts by mass of N,N',N",N"'-tetraacryloyltriethylenetetramine (manufactured by Fujifilm Co., Ltd., FAM402, melting point 110°C), and A hydrogel was obtained in the same manner as in Example 1a. Evaluation of the swelling properties of the obtained hydrogel, a puncture test after immersion in an alkaline solution, a DC polarization test, a charge-discharge test, and an appearance evaluation after immersion in an electrolyte solution were performed.

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Abstract

The present invention relates to a hydrogel and uses therefor. The present invention specifically relates to a hydrogel containing water and a macromolecular matrix and uses for said hydrogel, the hydrogel being characterized in that: the macromolecular matrix includes a copolymer of a monofunctional monomer having a hydrophilic group and one ethylenically unsaturated group and a polyfunctional monomer having an amide group and three to six ethylenically unsaturated groups but not having an ester bond; 40-95 parts by mass of water and 5-60 parts by mass of the macromolecular matrix are included per 100 parts by mass of the hydrogel; and when the hydrogel has been immersed in a 4M KOH aqueous solution at a temperature of 25 DEG C for 14 days, the degree of swelling of the hydrogel is no more than 650%.

Description

technical field [0001] The present invention relates to hydrogels and their uses. In more detail, the present invention relates to: hydrogels capable of suppressing the growth of dendrites, hydrogels usable in the environment of high-concentration aqueous electrolytes, gel electrolytes, separators and alkaline electrolytes using them Battery. [0002] This application is based on Japanese Patent Application No. 2018-163485 filed on August 31, 2018, Japanese Patent Application No. 2018-168757 filed on September 10, 2018, and Japanese Patent Application No. 2018 on March 4, 2019. Priority No. 2019-038620, which is hereby incorporated. Background technique [0003] Against the backdrop of rising global concerns about environmental issues in recent years, the use of renewable energy, the transition from gasoline vehicles to electric vehicles, and the use of smart grids are accelerating. With such a trend, the importance of storage batteries (secondary batteries) exhibiting hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/14C08F220/06C08F220/56C08J3/075H01M50/411H01M50/414H01M10/0565
CPCC08L101/14Y02E60/10C08F220/585H01M2300/0085H01M2300/0014H01M10/26H01M50/414C08F265/02C08F220/06C08F212/14C08F222/385C08J3/075C08F220/56H01M10/0565H01M50/409C08F20/54
Inventor 芥谅冈本光一朗
Owner SEKISUI PLASTICS CO LTD
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