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

All-solid-state composite electrolyte based on glass fiber vertical array structure and preparation method thereof

A composite electrolyte and array structure technology, applied in the field of solid electrolyte materials, can solve problems such as ionic conductivity and safety limitations, and achieve the effects of low cost, enhanced lithium ion transport channels, and high ionic conductivity

Active Publication Date: 2020-09-11
NANJING UNIV OF POSTS & TELECOMM
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since both the filler and the substrate are polymer electrolytes, the ionic conductivity and safety are limited by the polymer material itself.

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
  • All-solid-state composite electrolyte based on glass fiber vertical array structure and preparation method thereof
  • All-solid-state composite electrolyte based on glass fiber vertical array structure and preparation method thereof
  • All-solid-state composite electrolyte based on glass fiber vertical array structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Prepare polyethylene oxide (PEO, molecular weight 60W) and lithium bistrifluoromethanesulfonylimide (LiTFSI) at a molar ratio of 15:1 and mix them thoroughly.

[0042] (2) The solid electrolyte material of this example is Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 According to the stoichiometric ratio, 500g of lithium carbonate, alumina, germanium dioxide, and ammonium dihydrogen phosphate powder were weighed and mixed for ball milling. An additional 5wt% of lithium carbonate was added to compensate for the volatilization of lithium sources during high-temperature melting. After fully mixing, put the mixed powder in a corundum crucible, and heat it in a high-temperature electric melting furnace at 1350 o C for 30 minutes, until the formation of clarified molten glass, the molten glass is transferred to the platinum alloy slot-type drain plate heated by high-temperature electric fusion electrodes, and the temperature in the drain plate is controlled at 1250 ° c. It can be ...

Embodiment 2

[0048] (1) Polyvinylidene fluoride (PVDF, molecular weight 100W) and lithium hexafluorophosphate LiPF 6 Prepare according to the molar ratio of 25:1 and mix thoroughly.

[0049] (2) The solid electrolyte material of this example is Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 According to the stoichiometric ratio, 500g of lithium carbonate, alumina, titanium dioxide, and ammonium dihydrogen phosphate powder with a total mass of 500g were weighed and ball-milled, and an additional 5wt% of lithium carbonate was added to compensate for the volatilization of lithium sources during high-temperature melting. After fully mixing, the mixed powder was placed in an alumina crucible, at 1400 o Keep warm in the high temperature furnace of C for 30 minutes to clarify the molten state, then transfer the molten glass to the platinum alloy grooved bushing, and the temperature inside the platinum alloy grooved bushing is controlled at 1300 o c. The molten glass flows out along the nozzle at the botto...

Embodiment 3

[0053] (1) Polyethylene glycol (PEG, molecular weight 10000) and lithium hexafluorophosphate LiPF 6 Prepare according to the molar ratio of 25:1 and mix thoroughly.

[0054] (2) The solid electrolyte material of this example is Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 According to the stoichiometric ratio, 500g of lithium carbonate, alumina, germanium dioxide, and ammonium dihydrogen phosphate powder were mixed and ball milled, and an additional 5wt% of lithium carbonate was added to compensate for the volatilization of lithium sources during high-temperature melting. After fully mixing, put the mixed powder in a corundum crucible, and heat it in a high-temperature electric melting furnace at 1350 o C heat preservation for 30 minutes, until the clarified molten glass is formed, the molten glass is transferred to the platinum alloy grooved bushing, and the temperature inside the platinum alloy grooved bushing is controlled at 1250 °s c. The molten glass flows out along the nozzle ...

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
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an all-solid-state composite electrolyte based on a glass fiber vertical array structure and a preparation method thereof. The all-solid-state composite electrolyte with the thickness of 80-500 microns and the vertical array structure is prepared from a polymer and a lithium salt according to a molar ratio of 15: 1-25: 1 and 500-1000 g of a glass fiber electrolyte, and thepolymer is particles or powder. The preparation method comprises the following steps: (1), preparing polymer electrolyte powder; (2), preparing a glass fiber electrolyte; and (3), preparing and assembling the glass fiber vertical array composite electrolyte. The all-solid-state composite electrolyte is prepared; a continuous through lithium ion transmission path is formed by utilizing the glass electrolyte fibers, so that the all-solid-state composite electrolyte has the characteristic of high ionic conductivity (the highest room-temperature ionic conductivity reaching 3.3*10<-4 > S / cm); meanwhile, the overall specific capacity (the highest specific capacity reaching 119.7 mAh / g) of the lithium ion all-solid-state battery can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of solid electrolyte materials in lithium ion batteries, in particular to a preparation method of an all-solid composite electrolyte based on a glass fiber vertical array structure. Background technique [0002] As a secondary energy storage battery widely used at present, lithium-ion battery has attracted much attention because of its good comprehensive performance. However, traditional lithium-ion batteries usually use organic electrolytes, which lead to safety problems such as flammability, explosion and leakage of lithium-ion batteries. At the same time, the activity of the organic electrolyte is strong, and lithium metal with high energy density cannot be used as the electrode, which is difficult to meet the needs of the next generation of high energy density batteries. Therefore, obtaining solid-state electrolytes with high ionic conductivity and excellent chemical stability has become an important re...

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): H01M10/0565H01M10/058
CPCH01M10/0565H01M10/058H01M2300/0088Y02E60/10Y02P70/50
Inventor 韦玮吕金航舒梦馨
Owner NANJING UNIV OF POSTS & TELECOMM
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com