LiV3O8/Li:BPO4|Al<3+> doped Li7La3Zr2o12/Li4Ti5O12 all-solid-state thin film battery and preparation method

An all-solid-state, thin-film technology, applied in the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problems that affect the overall performance of the battery, the degree of matching is not high, and the synthesis temperature is inconsistent, so as to improve the comprehensive electrochemical performance. , Avoid under-burning or over-burning, improve the effect of close contact

Active Publication Date: 2014-11-19
郎溪品旭科技发展有限公司
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In spray pyrolysis, the substrate temperature is usually not high and the kinetic energy brought by the carrier gas to the particles is limited (much less than magnetron sputtering or pulsed laser), resulting in a low degree of tightness and matching of the interface between layers, so the grain boundary resistance of the interface Higher, will seriously affect the overall performance of the battery; at the same time, the grain boundary conductivity of the solid electrolyte layer body is very low, which is also an important factor affecting the all-solid-state battery
[0008]2. There are few solid electrolyte materials suitable for spray pyrolysis preparation. At present, the solid electrolyte LiPON (nitrogen-doped lithium phosphate) with good performance can only be produced by magnetron sputtering preparation
[0009] 3. The thin film battery formed after spraying is only the precursor of the material. The positive electrode material, negative electro

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
  • LiV3O8/Li:BPO4|Al&lt;3+&gt; doped Li7La3Zr2o12/Li4Ti5O12 all-solid-state thin film battery and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1: Add 3.55mol Li 2 CO 3 , 1.5molLa 2 O 3 , 0.05molAl 2 O 3 , 1.9molZrO 2 Mix evenly, add 2% 95% ethanol, mill in a ball mill at 250 rpm for 10 hours, dry in a vacuum oven (vacuum 20 Pa) at 60°C for 10 hours after the ball milling, and then place it in an agate grinding bowl. Re-grind for 30 minutes, and the ground powder will be heated at a rate of 5°C / min to 700°C for 6 hours, and then at a rate of 8°C / min to 1120°C for 10 hours to produce Al 3+ Doped Li 7 La 3 Zr 2 O 12 Solid electrolyte powder; stir and mix equimolar amounts of boric acid, phosphoric acid and the molar amount of 2% lithium hydroxide at 80°C until it becomes a paste, and the paste is heated at a rate of 3°C / min to Incubate at 450℃ for 5 hours to produce Li: BPO 4 Solid electrolyte powder. Place the copper sheet on the surface of the heated work board at a constant temperature of 250°C, ground the surface of the copper sheet, connect the liquid spray gun A to the precursor solution I, and the co...

Example Embodiment

[0027] Example 2: Add 3.6molLi 2 CO 3 , 1.5molLa 2 O 3 , 0.1molAl 2 O 3 , 1.8molZrO 2 Mix uniformly, add 4% 95% ethanol, ball mill in a ball mill at 200 rpm for 30 hours, dry in a vacuum oven at 80°C (vacuum 10Pa) for 15 hours after ball milling, take it out and place it in an agate bowl Re-grind for 10 minutes, and the ground powder will be heated at a rate of 10℃ / min to 800℃ for 6 hours, and then at a rate of 2℃ / min to 1120℃ for 30 hours to produce Al 3+ Doped Li 7 La 3 Zr 2 O 12 Solid electrolyte powder; stir and mix equimolar amounts of boric acid, phosphoric acid and 5% by mole of lithium hydroxide at 85°C until it becomes a paste, and the paste is heated at a rate of 5°C / min to Incubate at 550°C for 7 hours to make Li: BPO 4 Solid electrolyte powder. Place the silicon wafer on the surface of the heating work board at a constant temperature of 200℃, ground the surface of the silicon wafer, connect the liquid spray gun A to the precursor solution I, and the composition of th...

Example Embodiment

[0028] Example 3: Add 3.55mol Li 2 CO 3 , 1.5molLa 2 O 3 , 0.05molAl 2 O 3 , 1.9molZrO 2 Evenly mix, add 6% 95% ethanol, ball mill in a ball mill at 400 rpm for 20 hours, dry in a vacuum oven (vacuum 100 Pa) at 60°C for 20 hours after ball milling, take it out, and place it in an agate bowl Re-grind for 30 minutes, and the ground powder will be heated at a rate of 8°C / min to 900°C for 8 hours, and then at a rate of 4°C / min to 1250°C for 20 hours to produce Al 3+ Doped Li 7 La 3 Zr 2 O 12 Solid electrolyte powder; the equimolar amount of boric acid, phosphoric acid and the molar amount of 10% lithium hydroxide are stirred and mixed at 95°C until it becomes a paste, and the paste is heated at a rate of 10°C / min to Incubate at 650°C for 10 hours to make Li: BPO 4 Solid electrolyte powder. Place the silicon wafer on the surface of the heating work board at a constant temperature of 350℃, ground the surface of the silicon wafer, connect the liquid spray gun A to the precursor solutio...

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

No PUM Login to view more

Abstract

The invention relates to a LiV3O8/Li:BPO4|Al<3+> doped Li7La3Zr2o12/Li4Ti5O12 all-solid-state thin film battery and a preparation method. The preparation method is characterized in that a positive active material precursor and a negative active material precursor are pyrolyzed by virtue of a liquid spray gun in an electrostatic spraying manner, electrolyte material layers are sprayed by virtue of a hypersonic flame layer by layer to form a thin film all-solid-state lithium ion battery LiV3O8/Li:BPO4|Al<3+> doped Li7La3Zr2O12/Li4Ti5O12; a voltage between a substrate and the spray gun reaches up to 40 to 80 kV, so that the close contact between an anode material and a current collector and between a cathode material and electrolyte can be greatly improved; the movement velocity of hypersonic flame spraying particles is high, and the particles can be closely contacted with the substrate at a semi-molten state; meanwhile, second solid electrolyte LI: BPO4 is introduced in the Al<3+> doped Li7La3Zr2O12 solid electrolyte, so that the interface and crystal boundary impedance can be further reduced, and the comprehensive electrochemical performance of the all-solid-state battery can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of a high-performance all-solid-state thin-film battery manufacturing method. Background technique [0002] Lithium-ion batteries have absolute advantages such as high volume, high weight-to-energy ratio, high voltage, low self-discharge rate, no memory effect, long cycle life, and high power density. They have an annual share of more than 30 billion US dollars in the global mobile power market and far exceed other The market share of batteries is the most promising chemical power source [Wu Yuping, Wan Chunrong, Jiang Changyin, Lithium-ion Secondary Batteries, Beijing: Chemical Industry Press, 2002.]. At present, most of the lithium-ion secondary batteries at home and abroad use liquid electrolytes. Liquid lithium-ion batteries have some disadvantages, such as: liquid organic electrolytes may leak, and may explode at too high a temperature, causing safety accidents, and cannot be used in some applications. ...

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): H01M10/38
CPCH01M10/0525H01M10/0562H01M10/058Y02E60/10Y02P70/50
Inventor 徐玲霞水淼徐晓萍陈姝郑卫东高珊舒杰冯琳任元龙
Owner 郎溪品旭科技发展有限公司
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