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Gel electrolyte composition

A technology of gel electrolyte and composition, applied in the directions of hybrid capacitor electrolyte, non-aqueous electrolyte storage battery, electrolyte immobilization/gelation, etc., can solve the problems of difficult and difficult manufacturing, and achieve excellent liquid retention and membrane strength high effect

Active Publication Date: 2018-04-17
OSAKA SODA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it requires extra steps to make the voids, making it difficult to manufacture. It also requires skill to inject the electrolyte into the voids, making it very difficult to manufacture.

Method used

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  • Gel electrolyte composition
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Examples

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Embodiment

[0155] The present invention will be described in detail below by showing Examples and Comparative Examples. However, this invention is not limited to an Example.

Synthetic example

[0156] [Synthesis example (production of catalyst for polyether copolymerization)]

[0157] 10 g of tributyl tin chloride and 35 g of tributyl phosphate were added to a three-necked flask equipped with a stirrer, a thermometer, and a distillation device, and heated at 250° C. for 20 minutes while stirring under a nitrogen stream to distill off the distillate as The residue gave the condensation material as a solid. This was used as a polymerization catalyst in the following polymerization examples.

[0158] The monomer conversion composition of the polyether copolymer is as follows: 1 H NMR spectrum obtained. In the molecular weight measurement of the polyether copolymer, gel permeation chromatography (GPC) measurement was performed, and the weight average molecular weight, number average molecular weight, and molecular weight distribution were calculated in terms of standard polystyrene. GPC measurement was performed at 60°C using RID-6A manufactured by Shimadzu Corporatio...

Embodiment 1

[0177] [Example 1] Fabrication of a capacitor composed of negative electrode / gel electrolyte 1 / positive electrode

[0178]

[0179] 100 parts by mass of graphite with a volume average particle diameter of 4 μm and a 1.5% aqueous solution (manufactured by DAICEL CHEMICAL INDUSTRIES, LTD.) of sodium carboxymethyl cellulose with a molecular weight of 30,000 as the negative electrode active material are 2 parts by mass in terms of solid content , 5 parts by mass of acetylene black as a conductive auxiliary agent, a 40% aqueous dispersion of an SBR binder with a number average particle diameter of 0.15 μm is equivalent to 3 parts by mass of the solid content, and ion-exchanged water is 35 parts by mass according to the total solid content concentration. %, mixed and dispersed to prepare an electrode coating solution for the negative electrode.

[0180] This electrode coating solution for negative electrodes was applied to a copper foil having a thickness of 18 μm by the doctor bl...

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Abstract

Provided is a gel electrolyte composition that has exceptional coatability, gelling characteristics, and liquid retention performance, yields high film strength after gelling, and imparts exceptionaloutput properties and a high capacity retention rate to an electrochemical capacitor. A gel electrolyte composition containing an electrolyte salt and a polyether copolymer having ethylene oxide units, the polyether copolymer having a weight-average molecular weight of 100,000-1,000,000 and a viscosity at 25 DEG C of 1-12 Pa*s.

Description

technical field [0001] The present invention relates to a composition for gel electrolyte. In more detail, the present invention relates to a product that is excellent in paintability, gelation characteristics, and liquid retention, has high film strength after gelation, and can provide an electrochemical capacitor with excellent output characteristics and a high capacity retention rate. Composition for gel electrolyte. Furthermore, the present invention relates to a method for producing the composition for gel electrolyte, an electrochemical capacitor using the composition for gel electrolyte, and a method for producing the electrochemical capacitor. Background technique [0002] Secondary batteries and electrochemical capacitors are being actively developed as main or auxiliary power sources for electric vehicles (EV) and hybrid electric vehicles (HEV), or as power storage devices for renewable energy such as solar power generation and wind power generation. As electroch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/56H01G11/06H01G11/84H01M10/052H01M10/0565H01M10/0568
CPCH01G11/06H01G11/84H01M10/052H01M10/0565H01M10/0568C08G65/14C08L71/02H01M2300/0085H01G11/62H01G11/56C08G65/22Y02E60/13Y02T10/70Y02E60/10C08L33/10H01G11/32
Inventor 田渊雅人城幸弘加藤谅松尾孝
Owner OSAKA SODA CO LTD
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