Flexible lithium ion battery and packaging method thereof

A lithium-ion battery, flexible battery technology, applied in battery electrodes, secondary batteries, battery pack components, etc., can solve problems such as the immaturity of flexible lithium-ion batteries, and achieve low cost of raw materials, high specific electric capacity, and high practicality. effect of value

Inactive Publication Date: 2012-07-04
HUAZHONG UNIV OF SCI & TECH
View PDF2 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on flexible lithium-ion batteries with high performance and wide application is still immature, and

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
  • Flexible lithium ion battery and packaging method thereof
  • Flexible lithium ion battery and packaging method thereof
  • Flexible lithium ion battery and packaging method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Examples:

[0031] 1. Prepare the battery electrode material, cut the prepared zinc cobaltate / carbon cloth composite negative electrode material and lithium cobaltate positive electrode material into electrode sheets (3cm×5cm) of the same area, and cut a piece of separator (Celgard2400). Connect the aluminum tab to the positive electrode tab, and the nickel tab to the negative electrode tab;

[0032] 2. Put the prepared aluminum plastic film in the order of positive electrode sheet-diaphragm-negative electrode sheet, and then seal the three sides of the film with a packaging machine, leaving one side for subsequent infusion of 1.05mol / L LiPF 6 Electrolyte (of which LiPF 6 Dissolved in a solution with a volume ratio of EC to DEC of 1:1);

[0033] 3. Put the entire aluminum plastic film into the glove box, pour electrolyte into the unsealed side, put the aluminum plastic film into a plastic bag and take it out of the glove box, and seal the unsealed side of the aluminum plastic ...

Example Embodiment

[0037] Example 1

[0038] The carbon cloth was cleaned ultrasonically in acetone, water, and ethanol in sequence, and cut into a uniform area (4cm×2cm) after drying, and a piece of carbon cloth was put into the lining of the autoclave. Dissolve 1mmol zinc nitrate, 2mmol cobalt nitrate and 5mmol urea in 35ml deionized water, transfer to the lining of the autoclave filled with carbon cloth, screw the lid of the reactor and put it in a drying oven at 120℃ for 5h. After the reaction, it was cooled to room temperature naturally, and the sample was taken out and calcined in a muffle furnace at 400° C. for 2 h.

Example Embodiment

[0039] Example 2

[0040] The carbon cloth was cleaned using the cleaning method in Example 1. Dissolve 1mmol zinc nitrate, 2mmol cobalt nitrate, 2mmol ammonium fluoride and 5mmol urea in 35ml deionized water, and transfer to the lining of the autoclave filled with carbon cloth. Tighten the lid of the reactor and put it in the oven at 120℃ After reacting in the box for 5 hours, after the reaction, the sample is naturally cooled to room temperature, and the sample grown on the carbon cloth is calcined in a muffle furnace at 400° C. for 2 hours to obtain a very uniform and orderly zinc cobaltate nanowire array on the carbon cloth. Comparative Example 1 shows that the addition of ammonium fluoride has a greater impact on the reaction system, and fluoride ions promote the growth of the sample on the carbon cloth substrate.

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 provides a flexible lithium ion battery. The flexible lithium ion battery comprises a flexible battery case and a main battery body arranged inside the flexible battery case, electrolyte is filled in the flexible battery case, and the main battery body comprises a positive electrode plate, a diaphragm and a negative electrode plate which are stacked in sequence. The negative electrode plate is made from one of zinc cobaltate/carbon cloth composite negative electrode material, zinc oxide, tin oxide, ferric oxide and nickel oxide, and the positive electrode plate is made from one of lithium cobaltate, lithium iron phosphate and lithium manganate. The invention also provides a method for preparing the battery. In the invention, the problems that lithium ion batteries in prior arts have poor flexibility, relatively low capacitance, unsatisfactory circularity and poor electric stability are solved. The packaging of the battery is relatively simple, efficient and quick, most raw materials are low in cost, and the battery is suitable for popularization and has high practicability.

Description

technical field [0001] The invention belongs to the field of new generation energy storage, and in particular relates to the packaging and application of a high-performance flexible lithium-ion battery. Background technique [0002] Since the birth of lithium-ion batteries, it has attracted much attention. It is an internationally recognized ideal chemical energy source. It has many advantages such as large capacity, low self-discharge, and high platform voltage. It is quickly widely used in mobile phones, In fields such as DV, notebook computers and military equipment, the ever-expanding field of electric vehicles will bring more room for development of lithium-ion batteries. Throughout the development of science and technology, the miniaturization, lightness, portability and flexibility of optoelectronic devices are a leading future development trend. Some high-tech new products have also appeared one after another, such as flexible displays, flexible solar cells, transpa...

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): H01M10/0525H01M2/02H01M4/131H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 沈国震刘彬陈娣
Owner HUAZHONG UNIV OF SCI & TECH
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