High-capacity solid lithium ion battery and preparation method thereof

A lithium-ion battery, high-capacity technology, applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of non-combustibility, low first effect, etc., and achieve the effects of preventing shedding, improving electrical conductivity, and alleviating volume expansion

Active Publication Date: 2018-02-16
厦门高容新能源科技有限公司
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The PTPL type organic-inorganic polymer electrolyte prepared by the invention has the advantages of easy film formation, high pressure resistance, non-combustibility, and good safety performance, and solves many hidden dangers of conventional liquid electrolytes, and at the same time does not cause side reactions with electrode materials. It solves the problem of low first effect and reduces the need for Li + consumption, and also create matching conditions for the use of positive and negative binders. The PTPL type organic-inorganic polymer electrolyte can withstand a higher voltage range, creating favorable conditions for improving the energy 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
  • High-capacity solid lithium ion battery and preparation method thereof
  • High-capacity solid lithium ion battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Accurately weigh polyvinylidene fluoride PVDF, thermoplastic polyurethane TPU, and polyimide PI according to a mass ratio of 1:1:1, dissolve them in acetone and N,N-dimethylformamide, stir until completely dissolved, and then add 10wt% LGPS (Li 10 GeP 2 S 12 ) and 30wt% LiTFSI, stirred to a viscous gel, which is the PTPL type organic-inorganic polymer electrolyte, and then spun into a film with a thickness of 0.2mm by electrospinning technology, and the film was vacuum-dried at 80°C for 24h, After the film was flattened, it was punched into an original sheet with a diameter of 19 mm by a die to obtain a PTPL organic-inorganic polymer electrolyte film.

[0044] Glucose (3 wt%), carboxymethylcellulose CMC and SBR solution (2 wt%) were added to Na 2 SiO 3 In the saturated solution, stirring and dissolving, the powder obtained after spray drying was slowly added to the concentrated sulfuric acid solution in an argon atmosphere glove box (simultaneously completing the ca...

Embodiment 2

[0050] Add sucrose (5wt%), CMC and SBR solution (2wt%) to Na 2 SiO 3 In the saturated solution, stirring and dissolving, the powder obtained after spray drying was slowly added into a certain amount of concentrated sulfuric acid solution in an argon atmosphere glove box (simultaneously completing the carbonization of other carbon sources such as sucrose and Na 2 SiO 3 Precipitate SiO under acidic conditions 2), after the reaction is complete, slowly add deionized water dropwise, wash and filter, dry, and obtain the SiC composite spherical porous material by magnesia thermal reduction, and mix the SiC composite spherical porous material and lithium powder (10wt%) ball milling Obtain SiCL composite anode.

[0051] Preparation of the positive electrode sheet: Weigh the positive electrode material manganese-rich ternary material xLi according to the mass ratio (80:10:10) 2 MnO 3 ·(1-x)LiNi 0.8 co 0.1 mn 0.1 o 2 , conductive carbon black and binder (polyvinylidene fluoride...

Embodiment 3

[0056] Accurately weigh polyvinylidene fluoride PVDF, thermoplastic polyurethane TPU, and polyimide PI according to a mass ratio of 1:1:1, dissolve them in acetone and N,N-dimethylformamide, stir until completely dissolved, and then add 10wt%LGPS (Li 10 GeP 2 S 12 ) and a certain amount of LiTFSI, stirred until viscous gel, which is the PTPL type organic-inorganic polymer electrolyte, and then spun into a film with a thickness of about 0.2mm by electrospinning technology, and vacuum dried the film at 80°C for 24h After the film was flattened, it was punched into an original film with a diameter of 19mm by a die to obtain a PTPL type organic-inorganic polymer electrolyte film.

[0057] Preparation of the positive electrode sheet: Weigh the positive electrode material manganese-rich ternary material xLi according to the mass ratio (80:10:10) 2 MnO 3 ·(1-x)LiNi 0.8 co 0.1 mn 0.1 o 2 , conductive carbon black and binder (PTPL type organic-inorganic polymer electrolyte), th...

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
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a high-capacity solid lithium ion battery. The cathode material of the high-capacity solid lithium ion battery is a manganese-enriched ternary material xLi2MnO3.(1-x)LiNi0.8Co0.1Mn0.1O2, the anode material of the high-capacity solid lithium ion battery is a spherical porous silicon-based composite material SiCL, the electrolyte is a PTPL type organic-inorganic polymer electrolyte thin film which is prepared and obtained after mixing polyvinylidene fluoride, thermoplastic polyurethane, polyimide, Li10GeP2S12 and LiTFSI. According to the high-capacity solid lithium ion battery disclosed by the invention, the conductivity of the solid lithium battery is effectively improved, simultaneously, the safety problem of a liquid electrolyte is solved, the charge and dischargecapacities of the manganese-enriched ternary material are sufficiently developed, the high pressure resistance advantage of a compound polymer electrolyte is utilized, and simultaneously, multiple application restricts are solved, so that the promotion of the energy density of the lithium ion battery is promoted to the maximum extent.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a high-capacity solid-state lithium-ion battery and a preparation method thereof. Background technique [0002] At present, due to the pressure brought by the shortage of resources and environmental pollution, countries around the world are working hard to develop renewable green energy and energy storage materials, plus the popularization of portable electronic devices, electric vehicles, medical instrument power supplies, military equipment, and the development of UPS power supplies, etc. , the demand and performance requirements for power system-chemical power sources have increased dramatically. Lithium-ion batteries have received widespread attention due to their advantages such as high energy density, stable performance, no pollution, good cycle performance, superior safety performance, and no memory effect. [0003] Most of the current commercialized lithium batteries...

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): H01M4/36H01M4/48H01M4/505H01M10/0525H01M10/058
CPCH01M4/364H01M4/48H01M4/505H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 杨行蒋玉雄宗希钰陈梅蓉翁松清
Owner 厦门高容新能源科技有限公司
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