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Sodium ion battery and manufacturing method thereof

A sodium-ion battery and conductive agent technology, applied in secondary batteries, battery electrodes, circuits, etc., can solve the problems of only sodium-ion batteries and no overall battery manufacturing method, and achieve good safety performance, high first charge efficiency, and cycle high efficiency effect

Pending Publication Date: 2022-03-08
深圳市启明新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that there is only the positive electrode material of the sodium ion battery in the existing method and there is no overall battery manufacturing method, the present invention proposes a sodium ion battery and a manufacturing method thereof, and a method for preparing the positive electrode of the battery

Method used

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  • Sodium ion battery and manufacturing method thereof
  • Sodium ion battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1 Cell Production

[0049] Negative sheet production:

[0050] 1. Mix hard carbon, styrene-butadiene rubber, Super-P, and sodium carboxymethylcellulose in a mass ratio of 94:2:2:2;

[0051] 2. Put the mixed powder into the mixer, and stir for 3 hours with the revolution of 25HZ and the rotation speed of 2000rpm;

[0052] 3. The powder after stirring is mixed according to the ratio of powder: deionized water at a ratio of 1:1, and stirred for 6 hours with a revolution of 25HZ and a rotation speed of 2000rpm;

[0053] 4. Apply the prepared slurry evenly on the copper foil, and weld the tabs to make a negative electrode sheet.

[0054] Positive sheet production:

[0055] 1. Mix sodium iron phosphate, Super-P, and vinylidene fluoride in a mass ratio of 93:3.5:3.5;

[0056] 2. Put the mixed powder into the mixer, and stir for 3 hours with the revolution of 25HZ and the rotation speed of 2000rpm;

[0057] 3. The powder after stirring is mixed according to the pow...

Embodiment 2

[0061] Example 2 Cell Production

[0062] Negative sheet production:

[0063] 1. Hard carbon, styrene-butadiene rubber, graphene, sodium carboxymethyl cellulose are mixed in a mass ratio of 94:2:2:2;

[0064] 2. Put the mixed powder into the mixer, and stir for 3 hours with the revolution of 25HZ and the rotation speed of 2000rpm;

[0065] 3. The powder after stirring is mixed according to the ratio of powder: deionized water at a ratio of 1:1, and stirred for 6 hours with a revolution of 25HZ and a rotation speed of 2000rpm;

[0066] 4. Apply the prepared slurry evenly on the copper foil, and weld the tabs to make a negative electrode sheet.

[0067] Positive sheet production:

[0068] 1. Mix sodium iron phosphate, graphene, and vinylidene fluoride in a mass ratio of 90:5:5;

[0069] 2. Put the mixed powder into the mixer, and stir for 3 hours with the revolution of 25HZ and the rotation speed of 2000rpm;

[0070] 3. The powder after stirring is mixed according to the powd...

Embodiment 3

[0074] Example 3 Cell Production

[0075] Negative sheet production:

[0076] 1. Mix hard carbon, styrene-butadiene rubber, carbon nanotubes, and sodium carboxymethyl cellulose in a mass ratio of 94:2:2:2;

[0077] 2. Put the mixed powder into the mixer, and stir for 3 hours with the revolution of 25HZ and the rotation speed of 2000rpm;

[0078] 3. The powder after stirring is mixed according to the ratio of powder: deionized water at a ratio of 1:1, and stirred for 6 hours with a revolution of 25HZ and a rotation speed of 2000rpm;

[0079] 4. Apply the prepared slurry evenly on the copper foil, and weld the tabs to make a negative electrode sheet.

[0080] Positive sheet production:

[0081] 1. Mix sodium iron phosphate, carbon nanotubes, and vinylidene fluoride in a mass ratio of 96:2:2;

[0082] 2. Put the mixed powder into the mixer, and stir for 3 hours with the revolution of 25HZ and the rotation speed of 2000rpm;

[0083] 3. The powder after stirring is mixed accor...

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Abstract

The invention provides a sodium ion battery and a manufacturing method thereof, and belongs to the field of batteries in the new energy industry. The sodium ion battery comprises a negative plate, a positive plate, a diaphragm, a shell aluminum plastic film and electrolyte, the diaphragm wraps the negative plate, and the negative plate wraps the positive plate; the negative plate, the positive plate and the diaphragm are packaged in a shell aluminum plastic film, and electrolyte is injected into the shell aluminum plastic film. The invention provides an integral structure of a sodium-ion battery and a preparation method of the integral structure, and fills the blank of battery performance research on the integral structure of the sodium-ion battery at present; the sodium ion battery prepared by the invention has the characteristics of high battery rate, high initial charge efficiency, high cycle efficiency and good safety performance; and technical basis support is provided for sodium ion batteries in China.

Description

technical field [0001] The invention belongs to the field of batteries in the new energy industry, and in particular relates to a sodium ion battery and a manufacturing method thereof. Background technique [0002] With the advancement of technology in the battery industry, the demand for the battery industry is also increasing; it promotes the use of lithium-ion batteries in electric vehicles, and the use of lithium-ion batteries in energy storage equipment. However, for the serious shortage of lithium ore resources such as lithium cobalt oxide, lithium nickel cobalt manganate, iron phosphate, and lithium manganate, it is undoubtedly worse. On the one hand, according to statistics, even if all domestic lithium resources are used for car manufacturing, the supply can only be 1.5 billion at most; on the other hand, 80% of my country's lithium imports come from Australia, which is heavily dependent on imports. [0003] This is very unfavorable to the development of our new en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/587H01M4/1393H01M4/62H01M10/054H01M10/0587
CPCH01M4/587H01M4/625H01M10/054H01M10/0587H01M4/1393H01M2004/028Y02E60/10Y02P70/50
Inventor 刘亚明左志良王君虎刘雪艳
Owner 深圳市启明新能源科技有限公司