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

Electricity storage device, positive electrode and porous sheet used in electricity storage device, and method for improving dope rate

A power storage device and doping rate technology, which is applied in the field of increasing doping rate, positive electrode and porous sheet, can solve the problems of being unable to contribute to the miniaturization of the power storage device, and being unable to form a rocking chair type secondary battery, etc.

Inactive Publication Date: 2014-12-24
NITTO DENKO CORP
View PDF10 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
  • Electricity storage device, positive electrode and porous sheet used in electricity storage device, and method for improving dope rate
  • Electricity storage device, positive electrode and porous sheet used in electricity storage device, and method for improving dope rate
  • Electricity storage device, positive electrode and porous sheet used in electricity storage device, and method for improving dope rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] [Example 1]( figure 1 )

[0113]

[0114] 20.5 g of the lithiated polyacrylic acid aqueous solution prepared as the above-mentioned B component was prepared.

[0115] After mixing 4 g of polyaniline powder in a reduced and dedoped state prepared as the above-mentioned component A and 0.5 g of conductive carbon black (manufactured by Denka Kagaku Kogyo Co., Ltd., DENKA BLACK) powder, it was added to the above-mentioned 4.4% by weight concentration In 20.5 g of polyacrylic acid aqueous solution, fully stir with a spatula. This was subjected to ultrasonic treatment with an ultrasonic homogenizer for 1 minute to obtain a fluid paste. The paste was further degassed using a vacuum suction bell and a rotary pump.

[0116] Using a desktop automatic coating device (manufactured by TESTER SANGYO CO., LTD.), using a blade coater with a micrometer, the solution coating thickness was adjusted to 360 μm, and the above-mentioned defoaming was carried out at a coating speed of 10...

Embodiment 2～6、 comparative example 1～6

[0125] In the polyaniline sheet electrode (positive electrode) of Example 1, in order to prepare RC as described later, the thickness of the solution obtained by using a doctor blade coater with a micrometer, the drying temperature of a hot plate, the vacuum press A laminated battery was produced in the same manner as in Example 1 except that the pressing pressure was changed to the value described in the following [Table 1].

[0126] [Table 1]

[0127]

[0128] *The RC values ​​of Examples 1-6 are within the present invention as described later, and the RC values ​​of Comparative Examples 1-7 are outside the present invention.

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
sizeaaaaaaaaaa
electrical conductivityaaaaaaaaaa
electrical conductivityaaaaaaaaaa
Login to View More

Abstract

Provided is an electricity storage device having an excellent capacity density, and having an electrolyte layer (3) as well as a positive electrode (2) and a negative electrode (4) provided so as to face each other across the electrolyte layer (3); wherein the positive electrode (2) is a complex comprising at least the following materials (A) and (B), material (B) is fixed in the positive electrode, and when the weight of material (A) used is X grams and the apparent volume of the positive electrode (2) is Y liters, X / Y (positive electrode active material concentration g / L) is 100 to 320. (A) A positive electrode active material having an electrical conductivity that changes due to insertion and desorption of ions. (B) Anionic material.

Description

technical field [0001] The present invention relates to an electrical storage device, a positive electrode and a porous sheet used therein, and a method for increasing a doping rate, in particular, to a novel electrical storage device having excellent high capacity density and high energy density that achieves a high doping rate, A positive electrode and a porous sheet used therein, and a method for increasing the doping rate. Background technique [0002] In recent years, with the advancement and development of electronic technologies such as laptop computers, 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 ...

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): H01M4/13H01M4/36H01M4/60
CPCH01M4/13H01M2004/021Y02E60/10Y02P70/50
Inventor 阿部正男大谷彰植谷庆裕松浦爱美加治佐由姬江里口冬树杉原保则
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