Aqueous battery current collector, positive electrode, flexible battery and preparation and application thereof

A technology of battery collectors and current collectors, which is applied in the direction of battery electrodes, electrode carriers/current collectors, secondary batteries, etc., and can solve problems such as electrolyte corrosion and lack of advantages

Active Publication Date: 2020-01-17
CENT SOUTH UNIV
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the base materials (current collectors) of commonly used aqueous battery electrode materials are stainless steel mesh, titanium mesh, etc., which have no advantages in flexible energy storage devices, and are easily corroded by the electrolyte during long-term use.

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
  • Aqueous battery current collector, positive electrode, flexible battery and preparation and application thereof
  • Aqueous battery current collector, positive electrode, flexible battery and preparation and application thereof
  • Aqueous battery current collector, positive electrode, flexible battery and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] (1) Halloysite pretreatment: First, halloysite powder and deionized water are stirred and mixed according to the designed ratio, halloysite powder: deionized water=1g:50mL, the control stirring rate is 500r / min, the stirring time Next, let it stand for 10 minutes, and take the middle liquid; then, repeat the first two steps twice; finally, take the halloysite solution in the previous step, dry it for 10 hours at 40°C, and grind it for 30 minutes to obtain purified halloysite stone powder. The hydrochloric acid=1g:50mL ratio of 2mol / L is stirred and mixed, and the stirring rate is controlled to be 500r / min, and the stirring time is 4h, and then the solution is centrifugally cleaned to neutrality, the centrifugal rate is controlled to 3000r / min, and the number of centrifugation is 3 times, and the obtained The substance was dried at 40°C for 10 hours to obtain acidified halloysite (acidified halloysite). Its diffraction pattern is attached figure 1 shown.

[0076] (2) ...

Embodiment 2

[0083] (1) Halloysite pretreatment: first, halloysite powder and deionized water are stirred and mixed according to the designed ratio, halloysite powder: deionized water=1g:80mL, the control stirring rate is 700r / min, the stirring time Next, let it stand for 20 minutes, and take the middle liquid; then, repeat the first two steps 4 times; finally, take the halloysite solution in the previous step, dry it for 20 hours at 60°C, and grind it for 40 minutes to obtain the purified halloysite stone powder. The hydrochloric acid=1g:80mL ratio of 2mol / L stirs and mixes, and the control stirring speed is 700r / min, and the stirring time is 5h, and then the solution is centrifugally cleaned to neutrality, and the centrifugal speed is controlled at 4000r / min, and the number of centrifugation is 4 times, and the obtained The substance was dried at 60°C for 15 hours to obtain acidified halloysite (acidified halloysite).

[0084](2) Preparation of electrospinning solution: by mass percenta...

Embodiment 3

[0091] (1) Halloysite pretreatment: first, halloysite powder and deionized water are stirred and mixed according to the designed ratio, halloysite powder: deionized water=1g:100mL, the control stirring rate is 800r / min, the stirring time Next, let it stand for 20 minutes to take the middle layer liquid; then, repeat the first two steps 4 times; finally, take the halloysite solution in the previous step, dry it for 30 hours at 80°C, and grind it for 40 minutes to obtain the purified halloysite stone powder. The hydrochloric acid=1g:100mL ratio of 2mol / L is stirred and mixed, and the control stirring speed is 800r / min, and the stirring time is 6h, then the solution is centrifugally cleaned to neutrality, the centrifugal speed is controlled at 5000r / min, and the number of centrifugation is 5 times, the obtained The substance was dried at 80°C for 20 hours to obtain acidified halloysite (acidified halloysite).

[0092] (2) Preparation of electrospinning solution: by mass percenta...

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
thicknessaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of aqueous batteries, and particularly discloses an aqueous battery current collector which comprises a carbon material and a clay material embedded in thesurface of the carbon material. The invention also provides a preparation method of the aqueous battery current collector, which comprises the following steps of dispersing a polymer and a clay material in a mass ratio of (60-75): (25-40) in a solvent to obtain a spinning solution; carrying out electrostatic spinning on the spinning solution; obtaining a clay material-polymer membrane material; and calcining the c clay material-polymer membrane material in a protective atmosphere at 400-600 DEG C to prepare the aqueous battery current collector. The invention also discloses an application ofthe current collector, a positive electrode containing the current collector, and a flexible aqueous battery loaded with the positive electrode. According to the material disclosed by the invention, through the mutual cooperation of the components of the carbon and clay materials and the special mosaic structure, the electrical conductivity, hydrophilicity and ionic conductivity of the material can be effectively improved, and in addition, the current collector can be endowed with good flexibility and mechanical strength.

Description

technical field [0001] The invention belongs to the technical field of water-based batteries; in particular, it relates to a water-based battery current collector and a positive electrode material. Background technique [0002] With the gradual development of various industries, flexible energy storage devices occupy more and more aspects in people's daily life, such as rollable devices, smart electronic devices and wearable devices, etc. Flexible electronic device technology is also an important development direction of a new generation of electrochemical energy storage technology, and has also received widespread attention from all walks of life. However, most of the existing energy storage devices are lithium-ion batteries, which generally use anhydrous organic solutions as electrolytes, and organic solvents are usually toxic and flammable, so there are great safety problems in the use of batteries. At the same time, the harsh conditions that lithium batteries must be pr...

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): H01M4/66H01M4/70H01M10/36
CPCH01M4/66H01M4/663H01M4/665H01M4/70H01M10/36Y02E60/10
Inventor 刘赛男蔡圳阳杨华明张毅张强
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap