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Polymer-ceramic hybrid coating composition and method for producing battery separation membrane using the composition

A separation membrane and composition technology, applied in battery pack parts, coatings, circuits, etc., can solve the problems of complex coating steps, reduced ion mobility, increased resistance, etc., to improve mechanical safety and improve heat resistance. performance, safety, and longevity

Active Publication Date: 2020-07-28
杰拉布里德有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technique as described above has the problems that the coating step is too complicated and causes an increase in electrical resistance and thus a decrease in ion mobility when the content ratio of the binder is high.

Method used

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  • Polymer-ceramic hybrid coating composition and method for producing battery separation membrane using the composition
  • Polymer-ceramic hybrid coating composition and method for producing battery separation membrane using the composition
  • Polymer-ceramic hybrid coating composition and method for producing battery separation membrane using the composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] 96g of alumina (Al 2 o 3 ), 880g of acetone, 4.8g of vinyl triethoxysilane (Triethoxyvinyl Silane, TEVS) as a surface modifier, and 1g of hydrogen chloride were stirred for 4 hours to modify the surface of alumina .

[0094] The aluminum oxide particles after the above-mentioned surface modification, 18 g of polyvinylidene fluoride (PVDF) polymer as a high molecular fluoropolymer, and 3 g of N-vinylpyrrolidone (N- Vinylpyrrolidone) and 3g of 1,4-butanediol dimethacrylate (1,4-Butanediol Dimethacrylate) and 0.01g of benzoyl peroxide (Benzoyl Peroxide, BPO) as a thermal initiator are mixed to produce A composition for coating a separation membrane is disclosed.

[0095] Next, the above composition for coating a separation membrane was applied to a thickness of 3 μm on one side of a 18 μm polyethylene-based film using a microgravuer. After the coating was completed, a crosslinking reaction was performed at a temperature of 70° C. for 10 minutes. Next, a hardening trea...

Embodiment 2 to 13

[0097] The separation membrane coating composition was produced by the same production method as in Example 1, but components with different conditions were used, and when producing the battery separation membrane, by using the compositions in Examples 2 to 13 respectively Coating was carried out to manufacture a separation membrane. Table 1 shows the comparison data of the separation membrane coating composition obtained in Examples 1 to 13 and the production method of the battery separation membrane.

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Abstract

The invention relates to a polymer-ceramic hybrid coating composition and a method for manufacturing a battery separation membrane using the composition. The invention provides a composition for the coating layer of a storage battery separation membrane, a storage battery separation membrane using the composition and a manufacturing method thereof, which are characterized in that they include: a slurry, including a vinyl siloxane surface modifier Surface-modified ceramic particles, high-molecular fluorine-containing polymers, and cross-linked polymers; and a solvent are dispersed with the above-mentioned slurry.

Description

technical field [0001] The present invention relates to a polymer-ceramic hybrid coating composition for a battery separation membrane coating layer that can improve the heat resistance and electrode adhesion of the separation membrane by a single process, thereby improving the safety and life of the battery, and its use A method for producing a battery separation membrane of the above composition. Background technique [0002] Batteries, semiconductors, and displays are the three core components of the information industry, and can be applied to small IT devices such as smartphones, artificial intelligence (AI), Internet of Things (IoT), drones, robots, and energy storage systems (ESS) ) and Electric Vehicles (EV) will become more and more important in the future industry. [0003] The battery is composed of an anode, a cathode, a separation membrane and an electrolyte. The separation membrane is an insulator between the anode and the cathode, which is used to maintain the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/16C08F259/08C08F222/14C08F226/10H01M2/14H01M2/16
CPCC09D7/62C09D127/16C08F259/08C08K2003/2227C08K9/06H01M50/403H01M50/446H01M50/449C08F222/102Y02E60/10H01M50/443H01M50/411H01M50/434Y02P70/50
Inventor 宋承原
Owner 杰拉布里德有限公司
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