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Super capacitance battery diaphragm, preparing method thereof and application thereof

A supercapacitor battery and separator technology, applied in the field of battery separators, to achieve the effects of improving ion migration capacity and exchange capacity, excellent charge retention capacity, and low internal resistance

Active Publication Date: 2014-01-15
莱州联友金浩新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The battery separator materials currently on the market are mainly for nickel-metal hydride batteries, lithium-ion batteries, ordinary supercapacitors, etc., which cannot meet or give full play to the excellent characteristics of supercapacitor batteries. Therefore, it is necessary to research and develop a new separator material to meet the needs of supercapacitors. Battery usage requirements

Method used

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  • Super capacitance battery diaphragm, preparing method thereof and application thereof
  • Super capacitance battery diaphragm, preparing method thereof and application thereof
  • Super capacitance battery diaphragm, preparing method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The fiber material is compounded according to the weight ratio, that is, polyolefin sheath-core fiber, fiber fineness 0.8D, length 38mm, content 80%; polypropylene fiber, fineness 0.8D, length 38mm, content 20%, the above-mentioned fiber is dry-processed Formed by carding process, dried in hot air at 120°C, and made into a single layer with a density of 18g / m 2 The diaphragm matrix, the density of 3 layers is 18g / m 2 The single-layer diaphragm matrix is ​​compounded with a laminator, and adjusted to a certain thickness with a rolling mill to make a diaphragm matrix. The surface density of the diaphragm matrix is ​​54g / m 2 .

[0030]The diaphragm matrix is ​​transported to the sulfonation reactor, and sulfonated with 90% concentration of gaseous sulfur trioxide, and the sulfonated matrix is ​​transported to the alkali cleaning tank for neutralization reaction. The concentration of potassium hydroxide is 1%, and the alkali washing The speed is controlled at 20 m / min, an...

Embodiment 2

[0035] Using 100% polyolefin sheath-core fiber to make the diaphragm matrix, the fiber fineness is 0.8D, and the fiber length is 3mm to 10mm. Using wet papermaking technology, it is made into a single layer with a density of 18g after beating, molding, dehydration, and drying. / m 2 The diaphragm matrix, the density of 3 layers is 18g / m 2 The single-layer diaphragm matrix is ​​compounded with a laminator, and adjusted to a certain thickness with a rolling mill to make a diaphragm matrix. The surface density of the diaphragm matrix is ​​54g / m 2 .

[0036] Then process by the sulfonation treatment of embodiment 1 and the grafting treatment mode and order of physicochemical emulsification diffusion technology, make surface density be 55g / m 2 , a supercapacitor battery diaphragm with a thickness of 0.12mm, a sulfonation degree of 0.8%, an O / C of 0.041, and a monomer grafting rate of 0.2%.

Embodiment 3

[0038] First use 100% polypropylene fiber, of which the fineness is 0.8D and the length is 38mm. It is formed by dry carding process and dried in hot air at 130°C to make a single layer with a density of 24g / m 2 the diaphragm base.

[0039] Then use 100% polyolefin sheath-core fiber, the fiber fineness is 0.8D, and the fiber length is 3mm to 10mm. Using wet papermaking technology, it is made into a single layer with a density of 23g / m after beating, molding, dehydration, and drying. 2 the diaphragm base.

[0040] Laminate the 3-layer single-layer diaphragm matrix using a laminator, wherein the middle layer is a single-layer diaphragm matrix of 100% polypropylene fiber, and the other two single layers are a single-layer diaphragm matrix of 100% polyolefin sheath-core fiber. Adjust to a certain thickness to make a diaphragm matrix, the surface density of the diaphragm matrix is ​​70g / m 2 .

[0041] The diaphragm matrix is ​​transported to the sulfonation reactor, and sulfonat...

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Abstract

The invention relates to a super capacitance battery diaphragm, wherein permanent hydrophilic group hydrophilic groups and crylic acid series monomers simultaneously exist on the surface of fiber forming the diaphragm, the fiber forming the diaphragm is composed of polyolefin skin core type type fiber or polypropylene fiber or both the polyolefin skin core type core fiber and the polypropylene fiber in matching mode, is formed through a wet papermaking method or a dry carding process, and is manufactured into a laminated diaphragm base body. The super capacitance battery diaphragm has the advantages of excellent water retainability, high strength, strong ion migration ability, high charge retention ratio, low internal resistance and the like, meets large current charge and discharge requirements of super capacitance batteries, and has excellent low temperature performance.

Description

technical field [0001] The invention relates to a separator for batteries; in particular, it relates to a separator for a supercapacitor battery and a preparation method and application thereof. Background technique [0002] History has entered the 21st century. With the deepening of the global energy crisis, the depletion of oil resources and the increasing harm of air pollution and global temperature rise, governments and automobile companies generally recognize that energy saving and emission reduction are the main focus of future automotive technology development. Direction, the development of electric vehicles has become the best way to solve these two technical difficulties. Electric vehicles have also become the choice of countries around the world and a focus of technology competition. From the perspective of energy and environment, the development of new energy vehicles is an inevitable choice for our country. [0003] The supercapacitor battery (that is, a kind o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/02
CPCY02E60/13
Inventor 方开东徐继亮
Owner 莱州联友金浩新型材料有限公司