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

A kind of double-layer film all-solid-state film lithium battery spray pyrolysis battery manufacturing method

A double-layer thin-film, all-solid-state technology, applied in the direction of electrolyte battery manufacturing, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of difficult optimization of process conditions, affecting the overall performance of the battery, and the low degree of particle matching, and achieve improved The effect of conductance, stress reduction, and impact reduction

Inactive Publication Date: 2014-10-08
NINGBO UNIV
View PDF7 Cites 0 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
[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. There are many process parameters that can be adjusted, such as carrier gas flow rate, material flow rate, substrate temperature, distance between nozzle and substrate, etc., optimization of process conditions more difficult

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 double-layer film all-solid-state film lithium battery spray pyrolysis battery manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Place the copper substrate on the surface of a stainless steel heating plate at a constant temperature of 450°C, and connect the spray gun A to the precursor solution I: ammonium metavanadate NH 4 VO 3 (0.3mol / L), ammonium chloride NH 4 Cl(0.08mol / L), lithium acetate Li(CH 3 COO) (0.3mol / L), lanthanum nitrate La(NO 3 ) 3 (0.2mol / L), n-butyl titanate Ti(OC 4 h 9 ) 4 (0.4mol / L), CH acetate 3 COOH (0.2mol / L), and ethylene glycol methyl ether (0.1wt%) aqueous solution. Gun B is connected to Precursor Solution II: Lithium Acetate Li(CH 3 COO) (0.4mol / L), n-butyl titanate Ti(OC 4 h 9 ) 4 (0.5mol / L), CH acetate 3Aqueous solution of COOH (0.3mol / L) and ethylene glycol methyl ether (0.15wt%). Spray gun A is 10 cm vertically away from the working surface, and the angle of intersection with the working surface is 65°. The carrier gas atomizes and sprays precursor solution I with a flow rate of 5 mL / min at a pressure of 100 KPa for 30 minutes to the substrat...

Embodiment 2

[0020] Example 2: Place the copper substrate on the surface of a stainless steel heating plate at a constant temperature of 300°C, and connect the spray gun A to the precursor solution I: ammonium metavanadate NH 4 VO 3 (0.4mol / L), ammonium chloride NH 4 Cl(0.09mol / L), lithium acetate Li(CH 3 COO) (0.51mol / L), lanthanum nitrate La(NO 3 ) 3 (0.4mol / L), n-butyl titanate Ti(OC 4 h 9 ) 4 (0.8mol / L), CH acetate 3 COOH (0.2mol / L), and n-pentanol (0.5wt%) aqueous solution. Gun B is connected to Precursor Solution II: Lithium Acetate Li(CH 3 COO) (0.3mol / L), n-butyl titanate Ti(OC 4 h 9 ) 4 (0.375mol / L), acetic acid CH 3 Aqueous solution of COOH (0.2mol / L) and ethylene glycol methyl ether (0.2wt%). Spray gun A is 12 cm vertically away from the working surface, and the angle of intersection with the working surface is 70°. The carrier gas atomizes and sprays the precursor solution I with a flow rate of 6 mL / min at a pressure of 80 KPa for 40 minutes to the substrate. Then...

Embodiment 3

[0021] Example 3: Place the nickel sheet substrate on the surface of a stainless steel heating plate at a constant temperature of 500°C, and connect the spray gun A to the precursor solution I: ammonium metavanadate NH 4 VO 3 (0.45mol / L), ammonium chloride NH 4 Cl(0.1mol / L), lithium acetate Li(CH 3 COO) (0.95mol / L), lanthanum nitrate La(NO 3 ) 3 (0.8mol / L), n-butyl titanate Ti(OC 4 h 9 ) 4 (1.6mol / L), CH acetate 3 COOH (0.3mol / L), and polyvinyl alcohol (0.7wt%) aqueous solution. Gun B is connected to Precursor Solution II: Lithium Acetate Li(CH 3 COO)(0.2mol / L), n-butyl titanate Ti(OC 4 h 9 ) 4 (0.25mol / L), CH acetate 3 Aqueous solution of COOH (0.3mol / L) and ethylene glycol methyl ether (0.2wt%). Spray gun A is 15 cm away from the working surface vertically, and the angle of intersection with the working surface is 80°. The carrier gas atomizes and sprays the precursor solution I with a flow rate of 10 mL / min at a pressure of 150 KPa for 80 minutes to the substra...

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
electrical conductivityaaaaaaaaaa
Login to View More

Abstract

An all-solid-state lithium thin film that deposits the positive electrode material and the solid electrolyte together to form a double-layer film structure and uses a double spray gun to simultaneously spray the precursor solution of the two layers at the junction of the positive electrode solid electrolyte layer and the negative electrode layer to form a buffer layer. Ion battery spray pyrolysis manufacturing method. It is characterized in that the interface between one layer of film is reduced, the battery resistance is reduced and the ionic conductivity of the positive electrode material is improved at the same time; at the same time, the content of the two layers of components in the buffer layer between the two deposition layers is gradually changing, and the composition of the lower layer The content of the component gradually decreases, while the content of the upper component gradually increases. Thus forming a tight combination of the upper and lower layers, increasing the matching of the upper and lower layers, reducing stress and grain boundaries, and improving the conductance of the interface; thus greatly improving the conductance of the entire all-solid-state thin film battery, improving the stability and cycle performance of the battery.

Description

technical field [0001] The invention relates to the field of manufacturing all-solid-state lithium-ion batteries. Background technique [0002] The all-solid-state lithium-ion battery composed of inorganic solid electrolyte has the following advantages: it has higher specific energy than traditional nickel-cadmium and nickel-hydrogen batteries; the shape design of the battery is also more convenient and flexible, and can be prepared into almost any shape and size , can be directly integrated in the circuit; it has excellent charge-discharge cycle performance, low self-discharge rate, and can overcome the problem of gradual failure of the liquid electrolyte lithium-ion battery due to the dissolution of the electrode active material in the electrolyte after a period of use [Z.R.Zhang, Z.L.Gong, and Y.Yang, J.Phys.Chem.B, 108, 2004, 17546.]; high safety, no gas generated during work, no leakage of electrolyte; stable performance, wide operating temperature range ( -50~180℃), c...

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): H01M10/058
CPCY02E60/10Y02P70/50
Inventor 水淼舒杰任元龙徐丹郑卫东任政娟王青春黄峰涛
Owner NINGBO UNIV
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