A kind of all-solid polymer electrolyte, its preparation method and application

A technology of all-solid polymers and electrolytes, applied in solid electrolytes, electrolyte battery manufacturing, non-aqueous electrolytes, etc., can solve the problems of low room temperature conductivity of electrolytes and the inability to use lithium-ion batteries, etc., and achieve low cost, good mechanical strength, Effect of High Ionic Conductivity

Inactive Publication Date: 2017-09-29
HUAZHONG UNIV OF SCI & TECH RES INST SHENZHEN
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solves the technical problem that the all-solid-state PEO-based polymer electrolyte has low room temperature conductivity and cannot be applied to lithium-ion batteries

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
  • A kind of all-solid polymer electrolyte, its preparation method and application
  • A kind of all-solid polymer electrolyte, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This example is used to prepare an all-solid polymer electrolyte with a thickness of 100 μm, and its components include: polyethylene oxide with a molecular weight of 600,000, lithium trifluoromethanesulfonimide, barium titanate with a particle size of 10 nm, ion Liquid 1-butyl-1-methylpyrrolidine bistrifluoromethylsulfonimide. Wherein, the mass ratio of the lithium salt to the polyethylene oxide is 0.36, and the sum of the mass of the inorganic nanoparticles and the ionic liquid is 10% of the mass of the all-solid polymer electrolyte. The ionic liquid is liquid, and its trace exists in the all-solid polymer electrolyte, and the ionic liquid is not volatile.

[0029] Its preparation method is as follows:

[0030] S1: First mix lithium trifluoromethanesulfonylimide with organic solvent acetonitrile, then add barium titanate with a particle size of 10nm and ionic liquid 1-butyl-1-methylpyrrolidine bistrifluoromethylsulfonyl amine, then magnetically stirred for 60 min, a...

Embodiment 2

[0037] This example is used to prepare an all-solid polymer electrolyte with a thickness of 300 μm, and its components include: polyethylene oxide with a molecular weight of 800,000, lithium tetrafluoroborate, zirconia with a particle size of 100 nm, and ionic liquid 1-butyl -1-Methylpyrrolidine bistrifluoromethylsulfonimide. Wherein, the mass ratio of the lithium salt to the polyethylene oxide is 0.5, and the sum of the mass of the inorganic nanoparticles and the ionic liquid is 30% of the mass of the all-solid polymer electrolyte. The ionic liquid is liquid, and its trace exists in the all-solid polymer electrolyte.

[0038] Its preparation method is as follows:

[0039] S1: First mix lithium trifluoromethanesulfonylimide with organic solvent acetone, then add zirconia with a particle size of 100nm and ionic liquid 1-butyl-1-methylpyrrolidine bistrifluoromethylsulfonylimide , and then magnetically stirred for 30 min, and finally added polyethylene oxide powder with a molecul...

Embodiment 3

[0045] This example is used to prepare an all-solid polymer electrolyte with a thickness of 120 μm, and its components include: polyethylene oxide with a molecular weight of 1 million, lithium perchlorate and lithium hexafluorophosphate, silicon oxide with a particle size of 50 nm, and ionic liquid 1- Butyl-1-methylpyrrolidine bistrifluoromethylsulfonimide. Wherein, the mass ratio of the lithium salt to the polyethylene oxide is 0.1, and the sum of the mass of the inorganic nanoparticles and the ionic liquid is 15% of the mass of the all-solid polymer electrolyte. The ionic liquid is liquid, and its trace exists in the all-solid polymer electrolyte.

[0046] Its preparation method is as follows:

[0047] S1: Lithium perchlorate, lithium hexafluorophosphate, and organic solvent tetrahydrofuran were mixed first, then silicon oxide with a particle size of 50 nm and ionic liquid 1-butyl-1-methylpyrrolidine bistrifluoromethylsulfonimide were added, and then Stir magnetically for ...

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
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses an all-solid polymer electrolyte, its preparation method and application, and belongs to the field of lithium ion batteries. The all-solid polymer electrolyte includes polyethylene oxide, lithium salt, inorganic nanoparticles and ionic liquid, and the lithium The mass ratio of the salt to the polyethylene oxide is 0.1 to 0.5, and the sum of the mass of the inorganic nanoparticles and the ionic liquid is 10% to 30% of the mass of the all-solid polymer electrolyte; the lithium salt includes bis One or more of lithium trifluoromethanesulfonylimide, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluorophosphate, lithium hexafluoroarsenate, lithium trifluoromethanesulfonate and lithium dioxalate borate; inorganic nanoparticles include One or more of nano-alumina, nano-silicon, nano-zirconia and nano-barium titanate. The all-solid polymer electrolyte in the invention has better mechanical strength and higher ion conductivity. The method of the invention has simple process, low cost and easy acquisition of raw materials.

Description

technical field [0001] The invention belongs to the field of preparation of lithium-ion battery electrolyte materials, and more specifically relates to an all-solid polymer electrolyte, its preparation method and application. Background technique [0002] At present, lithium-ion batteries have had a huge impact on people's daily life and the national economy. They are used in electronic products such as mobile phones and computers, automotive power plants, and renewable energy power stations. The performance of batteries depends largely on the development of materials. In lithium-ion batteries, key material components include positive electrodes, negative electrodes, and electrolytes. Electrolyte materials are important factors that affect the safety and stability of batteries. [0003] At present, the widely used liquid electrolyte is easy to corrode the positive and negative electrodes, resulting in irreversible loss of battery capacity. At the same time, the heat generat...

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 Patents(China)
IPC IPC(8): H01M10/0565H01M10/058
CPCH01M10/0525H01M10/0565H01M10/058H01M2300/0082Y02E60/10Y02P70/50
Inventor 朱文赵旭东崇保和
Owner HUAZHONG UNIV OF SCI & TECH RES INST SHENZHEN
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