CN202905833U - Low resistance polyethylene composite diaphragm with micropores - Google Patents
Low resistance polyethylene composite diaphragm with micropores Download PDFInfo
- Publication number
- CN202905833U CN202905833U CN2012204974339U CN201220497433U CN202905833U CN 202905833 U CN202905833 U CN 202905833U CN 2012204974339 U CN2012204974339 U CN 2012204974339U CN 201220497433 U CN201220497433 U CN 201220497433U CN 202905833 U CN202905833 U CN 202905833U
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- CN
- China
- Prior art keywords
- material layer
- composite diaphragm
- low resistance
- polyoxyethylene
- polyvinylidene fluoride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a low resistance polyethylene composite diaphragm with micropores. The composite diaphragm comprises an ultrahigh molecular polyethylene layer, polyoxyethylene material layers, polyvinylidene fluoride material layers and micropores. The polyoxyethylene material layers are arranged on both sides of the ultrahigh molecular polyethylene layer and provided with the polyvinylidene fluoride material layers. The micropores are arranged on the polyoxyethylene material layers and the polyvinylidene fluoride material layers. According to the low resistance polyethylene composite diaphragm with micropores provided by the utility model, the lithium battery diaphragm is prepared by the ultrahigh molecular polyethylene material, so that the stability and performance of the lithium battery are improved, the service life of the lithium battery is prolonged, and the composite diaphragm has good practical value.
Description
Technical field
The utility model belongs to polymeric material field, relates in particular to a kind of band micropore low resistance polyethylene composite diaphragm.
Background technology
Ultra-high molecular weight polyethylene is called for short UHMWPE, English name ultra-high molecular weight polyethylene.Polyethylene is one of maximum, most widely used plastics variety of current production rate, accounts for 30% of world's plastics total output.Wherein, LDPE, HDPE and be called as the poly LLDPE of the third generation etc. and all belong to the thermoplasticity general-purpose plastics have molecular weight only up to the UHMEPE more than 1,500,000, use as engineering plastics because physical and mechanical property is excellent.The high molecular weight (molecular weight of HDPE only has 2～300,000 usually) of UHMWPE is given its excellent serviceability, and belong to thermoplastic engineering plastic moderate, function admirable, it has almost concentrated the advantage of various plastics, the combination property such as have unrivaled wear-resisting, shock-resistant, the self-lubricating of common polythene and other engineering plastics, corrosion-resistant, impact-absorbing energy, low temperature resistant, health is nontoxic, be difficult for adhering to, be difficult for suction, density is less.In fact, also there is not a kind of simple macromolecular material to have so numerous excellent properties concurrently at present.Ultra-high molecular weight polyethylene has been applied to numerous areas at present, but not yet is applied on the lithium battery diaphragm, and except hydrophily was not good, every characteristic of ultra-high molecular weight polyethylene all was applicable to lithium battery diaphragm.Barrier film main function in battery material is that isolated both positive and negative polarity is to prevent the problems such as battery self discharging and the two poles of the earth short circuit, the lithium ion battery separator material can be divided into: weave film, nowoven membrane (nonwoven fabrics), microporous barrier, composite membrane, diaphragm paper, several classes such as laminate, but owing to be full of the corrosion of electrolyte and the variation of temperature in the operational environment of battery, so when long-term the use, the stability in use of above-mentioned various lithium battery diaphragms is relatively poor, is unfavorable for the use of the long-term stability of battery.
The utility model content
The purpose of this utility model is to utilize at a kind of band micropore low resistance polyethylene composite diaphragm, be intended to solve the resistance between barrier film and the electrode of can not reducing well that exists in the existing lithium battery diaphragm, and owing to being full of the corrosion of electrolyte and the variation of temperature in the operational environment of battery, so when long-term the use, less stable is unfavorable for the problem that the long-term stability of battery is used.
The purpose of this utility model is to provide a kind of band micropore low resistance polyethylene composite diaphragm, and described composite diaphragm comprises: ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Described ultra high molecular polyethylene layer both sides are provided with described polyoxyethylene material layer, and described polyoxyethylene material layer is provided with described polyvinylidene fluoride material layer, are provided with described micropore on described polyoxyethylene material layer and the polyvinylidene fluoride material layer.
Further, the thickness of described ultra high molecular polyethylene barrier film is 12-38 μ m.
Further, the aperture of described micropore is 0.026-0.038 μ m.
Band micropore low resistance polyethylene composite diaphragm of the present utility model, this composite diaphragm comprises: ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Ultra high molecular polyethylene layer both sides are provided with the polyoxyethylene material layer, the polyoxyethylene material layer is provided with the polyvinylidene fluoride material layer, be provided with micropore on polyoxyethylene material layer and the polyvinylidene fluoride material layer, band micropore low resistance polyethylene composite diaphragm of the present utility model, use the ultra high molecular polyethylene material to make lithium battery diaphragm and have in use good corrosion-resistant and resistance to elevated temperatures, keep stable operating characteristic in the corrosive environment of electrolyte that can be in battery and the variations in temperature when using, thereby prolonged the stability of the use of battery, improved battery performance, and polyoxyethylene water wetted material layer and polyvinylidene fluoride material layer are set on the surface, improved the hydrophily of membrane surface, reduce the storeroom impedance and assisted electrolyte conducting lithium ion, prolonged the useful life of lithium battery, good practical value has been arranged.
Description of drawings
Fig. 1 is the band micropore low resistance polyethylene composite diaphragm structural representation that the utility model provides.
Among the figure: 1, ultra high molecular polyethylene layer; 2, polyoxyethylene material layer; 3, polyvinylidene fluoride material layer; 4, micropore.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model embodiment provides a kind of band micropore low resistance polyethylene composite diaphragm, and this composite diaphragm comprises: ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Ultra high molecular polyethylene layer both sides are provided with the polyoxyethylene material layer, and the polyoxyethylene material layer is provided with the polyvinylidene fluoride material layer, are provided with micropore on polyoxyethylene material layer and the polyvinylidene fluoride material layer.
As the prioritization scheme of the utility model embodiment, the thickness of ultra high molecular polyethylene barrier film is 12-38 μ m.
As the prioritization scheme of the utility model embodiment, the aperture of micropore is 0.026-0.038 μ m.
Referring to accompanying drawing 1, the utility model band micropore low resistance polyethylene composite diaphragm is described in further detail.
As shown in Figure 1, a kind of low resistance polyethylene composite diaphragm with micropore of the present utility model, mainly comprise ultra high molecular polyethylene layer 1, up and down two side external surfaces of this ultra high molecular polyethylene layer 1 are respectively equipped with polyoxyethylene (PE0) material layer 2, be provided with polyvinylidene fluoride material layer 3 in polyoxyethylene (PE0) material layer 2 outsides, polyoxyethylene material layer 2 and polyvinylidene fluoride material layer 3 are provided with micropore 4, the thickness of ultra high molecular polyethylene barrier film is 12-38 μ m, and micropore 4 apertures are 0.026-0.038 μ m.
Band micropore low resistance polyethylene composite diaphragm of the present utility model, this composite diaphragm comprises: ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Ultra high molecular polyethylene layer both sides are provided with the polyoxyethylene material layer, the polyoxyethylene material layer is provided with the polyvinylidene fluoride material layer, be provided with micropore on polyoxyethylene material layer and the polyvinylidene fluoride material layer, band micropore low resistance polyethylene composite diaphragm of the present utility model, use the ultra high molecular polyethylene material to make lithium battery diaphragm and have in use good corrosion-resistant and resistance to elevated temperatures, keep stable operating characteristic in the corrosive environment of electrolyte that can be in battery and the variations in temperature when using, thereby prolonged the stability of the use of battery, improved battery performance, and polyoxyethylene water wetted material layer and polyvinylidene fluoride material layer are set on the surface, improved the hydrophily of membrane surface, reduce the storeroom impedance and assisted electrolyte conducting lithium ion, prolonged the useful life of lithium battery, good practical value has been arranged.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a band micropore low resistance polyethylene composite diaphragm is characterized in that, described composite diaphragm comprises: ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore;
Described ultra high molecular polyethylene layer both sides are provided with described polyoxyethylene material layer, and described polyoxyethylene material layer is provided with described polyvinylidene fluoride material layer, are provided with described micropore on described polyoxyethylene material layer and the polyvinylidene fluoride material layer.
2. band micropore low resistance polyethylene composite diaphragm as claimed in claim 1 is characterized in that, the thickness of described ultra high molecular polyethylene barrier film is 12-38 μ m.
3. band micropore low resistance polyethylene composite diaphragm as claimed in claim 1 is characterized in that, the aperture of described micropore is 0.026-0.038 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204974339U CN202905833U (en) | 2012-09-24 | 2012-09-24 | Low resistance polyethylene composite diaphragm with micropores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204974339U CN202905833U (en) | 2012-09-24 | 2012-09-24 | Low resistance polyethylene composite diaphragm with micropores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202905833U true CN202905833U (en) | 2013-04-24 |
Family
ID=48126462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204974339U Expired - Fee Related CN202905833U (en) | 2012-09-24 | 2012-09-24 | Low resistance polyethylene composite diaphragm with micropores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202905833U (en) |
-
2012
- 2012-09-24 CN CN2012204974339U patent/CN202905833U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20180924 |