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

Multi-component copolymer binder, positive plate including multi-component copolymer binder, and lithium ion battery

A lithium-ion battery, multi-component copolymerization technology, applied in the direction of battery electrodes, secondary batteries, circuits, etc., can solve the problems that the surface of active materials cannot be effectively wetted, cannot be coated with active materials, and battery cycle storage performance deteriorates. Achieve the effects of improving the first discharge efficiency, improving high temperature storage performance, and increasing the first gram capacity

Active Publication Date: 2016-01-13
NINGDE AMPEREX TECH
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used cathode binder polytetrafluoroethylene (PVDF) not only cannot effectively wet the surface of the active material, but also cannot effectively coat the active material. In addition, when the binder containing polytetrafluoroethylene When the agent is used in a high-voltage system, more gas will be produced, which will lead to deterioration of the cycle and storage performance of the battery

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
  • Multi-component copolymer binder, positive plate including multi-component copolymer binder, and lithium ion battery
  • Multi-component copolymer binder, positive plate including multi-component copolymer binder, and lithium ion battery
  • Multi-component copolymer binder, positive plate including multi-component copolymer binder, and lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] The present application is further described below through specific examples. However, these examples are merely exemplary and do not constitute any limitation to the protection scope of the present application.

[0070] In the following examples, comparative examples, and test examples, the reagents, materials, and instruments used are commercially available unless otherwise specified, and the detected methods and instruments are conventional means and conventional methods unless otherwise specified. instrument.

Embodiment 1 Embodiment 5

[0071] Embodiment 1~Example 5 The preparation of multi-component copolymerization binder 1~5

Embodiment 1

[0072] Embodiment one: the preparation of multi-component copolymerization binder 1:

[0073] Multi-component copolymerization binder 1: The multi-component copolymer 1 included is: In formula I ~ formula IV, R 1 for -H,R 3 for -CH 3 , R 2 for -CH 2 CN, R 4 for-COOH, R 5 for-SO 3 H, R 6 for-C 6 h 5 SO 3 H, R is R 7 for-COOCH 2 CH 3 , R 8 for-COOCH(CH 3 ) 2 .

[0074] With a mechanical stirrer, N 2 In the four-necked flask of the protection device and the thermometer, add successively the monomers corresponding to each structural monomer in the polypolymer 1, the initiator azobisisobutyronitrile (accounting for 0.2% of the total monomer weight), the emulsifier OP -10 (accounting for 0.5% of the total monomer weight), dispersant hexadecyl ammonium bromide (accounting for 0.1% of the total monomer weight) and solvent toluene, wherein formula I, formula II, formula III, formula IV each The molar ratio of the corresponding monomer is formula I monomer: formula ...

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
Glass transition temperatureaaaaaaaaaa
Glass transition temperatureaaaaaaaaaa
Glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to a multi-component copolymer binder, a positive plate including the multi-component copolymer binder, and a lithium ion battery, wherein the multi-component copolymer binder comprises a multi-component copolymer; the multi-component copolymer comprises a plurality of constitutional units; R1 and R3 are each independently selected from one of alkyl groups with 1-5 hydrogen atoms or carbon atoms; R2 and R4 are each independently selected from one of groups including at least one kind of oxygen atoms, nitrogen atoms or sulfur atoms; R5 and R6 are each independently selected from one of groups containing a sulfo group; R is selected from one or more of groups formed by a cyclic compound containing a carbonic ester group, or groups formed by a thiophene compound; and R7 and R8 are each independently selected from one of alkyl groups with 1-10 hydrogen atoms or carbon atoms, or alkyl ester groups with 2-10 carbon atoms. When the multi-component copolymer binder is applied to the lithium ion battery, the electrochemical performance of the lithium ion battery is improved.

Description

technical field [0001] The present application relates to the field of binders, in particular, to a multi-component copolymer binder, a pole piece comprising the multi-component copolymer binder, and a lithium ion battery comprising the pole piece. Background technique [0002] At present, most countries are facing the dual pressure of lack of non-renewable energy and environmental pollution, and the development of new energy is an important way to save energy and reduce emissions. Among them, due to the characteristics of small size, light weight, high working voltage, high energy, long cycle life and low pollution, lithium-ion batteries are ideal energy sources for future development. [0003] Lithium-ion batteries have become the mainstream development direction of secondary batteries due to their excellent performance. At the same time, with the development of battery technology, the requirements for the energy density of the battery are getting higher and higher, which...

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
IPC IPC(8): H01M4/62H01M10/0525
CPCH01M4/622H01M10/0525Y02E60/10
Inventor 刘会会魏增斌孙成栋钟泽郑义李红举
Owner NINGDE AMPEREX TECH
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