Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Positive electrode for electricity-storage device and method for manufacturing electricity-storage device and slurry for electricity-storage-device positive electrode

A technology for positive electrode slurry and power storage device, which can be used in the manufacture of hybrid/electric double layer capacitors, battery electrodes, hybrid capacitor electrodes, etc. and other problems, to achieve the effect of excellent initial capacity, excellent capacity density, and simplified process

Inactive Publication Date: 2015-04-15
NITTO DENKO CORP
View PDF6 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Positive electrode for electricity-storage device and method for manufacturing electricity-storage device and slurry for electricity-storage-device positive electrode
  • Positive electrode for electricity-storage device and method for manufacturing electricity-storage device and slurry for electricity-storage-device positive electrode
  • Positive electrode for electricity-storage device and method for manufacturing electricity-storage device and slurry for electricity-storage-device positive electrode

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] [Preparation of Conductive Polymer]

[0053] As known so far, conductive polyaniline can be obtained by electrolytically polymerizing aniline in the presence of a protic acid in a suitable solvent, or chemically oxidatively polymerizing it using an oxidizing agent. It can be obtained by oxidative polymerization of aniline with an oxidizing agent in the presence of a protonic acid. As the solvent, water is usually used, or a mixed solvent of a water-soluble organic solvent and water, or a mixed solvent of water and a nonpolar organic solvent may be used. In this case, a surfactant or the like may be used in combination.

[0054] The case where water is used as a solvent to oxidatively polymerize aniline will be described in more detail as an example. The chemical oxidative polymerization of aniline is carried out in water using a chemical oxidizing agent in the presence of a protic acid. The chemical oxidizing agent used may be either water-soluble or water-insoluble. ...

Embodiment 1

[0136] [Slurry for Example 1: 1 mm crushing ball]

[0137] After mixing 4 g of the aforementioned polyaniline powder, 0.5 g of conductive carbon black (manufactured by Denka Kagaku Kogyo Co., Ltd., DENKA BLACK) powder, and 4 g of water, it was added to 20.5 g of the aforementioned polyacrylic acid-polyacrylate lithium complex solution, and used Planetary rotary ball mill (manufactured by Fritsch Co., Ltd., P-6), using 1 mm zirconia crushing balls, the amount of crushing balls is set to 20% of the container capacity recommended by the manufacturer [for example, if it is a 250ml container, the amount of balls is 50ml (ie, 300g of balls with a specific gravity of 6g / cc)], mixed and stirred for 1 hour at a rotating speed of 400rpm. After separating the zirconia balls, the resulting slurry was subjected to a defoaming operation for 3 minutes using THINKY MIXER (manufactured by THINKY CORPORATION).

Embodiment 2

[0138] [Slurry for Example 2: 2mm crushing balls]

[0139] Use the same weight (300g) and the same capacity (50ml) mm crushing balls instead of the size 1mm of the crushing balls kneaded by the ball mill used in the preparation of the slurry in Example 1, except that it is the same as the slurry in Example 1 Operation, preparation of positive electrode slurry.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

Provided is a positive electrode for a high-performance electricity-storage device that excels in terms of capacity per unit weight of an active material, initial capacity (during the initial charge and discharge) in particular. The present invention is a positive electrode for an electricity-storage device, said positive electrode containing conductive-polymer particles as an active material and being characterized in that said conductive-polymer particles exhibit a flattened shape.

Description

technical field [0001] The present invention relates to a positive electrode for an electrical storage device, a method for producing a positive electrode for an electrical storage device, and a slurry for a positive electrode of an electrical storage device. And the manufacturing method of the slurry for positive electrodes of an electrical storage device. Background technique [0002] In recent years, with the advancement and development of electronic technology in portable PCs, 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. Intercalation and deintercalat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M4/137H01M4/1399
CPCY02E60/122H01M4/60H01M4/1399H01M4/137C08G73/0266H01G11/04H01G11/24H01G11/48H01G11/86Y02E60/10Y02T10/70H01G11/28H01G11/42H01G11/66H01M4/606Y02E60/13
Inventor 安藤洋平岸井丰阿部正男植谷庆裕武弘義水池敦子
Owner NITTO DENKO CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com