CN203026574U - Novel ultra-high molecular weight polyethylene lithium battery composite separating film - Google Patents
Novel ultra-high molecular weight polyethylene lithium battery composite separating film Download PDFInfo
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- CN203026574U CN203026574U CN2012205237062U CN201220523706U CN203026574U CN 203026574 U CN203026574 U CN 203026574U CN 2012205237062 U CN2012205237062 U CN 2012205237062U CN 201220523706 U CN201220523706 U CN 201220523706U CN 203026574 U CN203026574 U CN 203026574U
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- lithium battery
- molecular polyethylene
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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
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Abstract
The utility model discloses a novel ultra-high molecular weight polyethylene lithium battery composite separating film, which comprises a polyolefin resin matrix, ultra-high molecular weight polyethylene layers, polyoxyethylene material layers, polyvinylidene fluoride material layers and micropores, wherein the ultra-high molecular weight polyethylene layers are respectively arranged on the surfaces of the two sides of the polyolefin resin matrix, and the polyoxyethylene material layers are respectively arranged on the outer surfaces of the ultra-high molecular weight polyethylene layers; and the polyvinylidene fluoride material layers are respectively arranged on the outer surfaces of the polyoxyethylene material layers, and the micropores are arranged in the ultra-high molecular weight polyethylene layers, the polyoxyethylene material layers and the polyvinylidene fluoride material layers. An ultra-high molecular weight material is used to prepare the lithium battery composite separating film, so that the performance and the stability of a lithium battery are improved, and the application value is very good.
Description
Technical field
The utility model belongs to polymeric material field, relates in particular to a kind of Novel ultra-high molecular polyethylene lithium battery 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 do not have 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 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 the corrosion of electrolyte and the variation of temperature be full of in the operational environment due to 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 Novel ultra-high molecular polyethylene lithium battery composite diaphragm, be intended to solve the resistance between barrier film and electrode of can not reducing well that exists in existing lithium ion battery separator, use in the changing environment of the corrosion that has been full of electrolyte and temperature, less stable is unfavorable for the problem of the long-term stability use etc. of battery.
The purpose of this utility model is to provide a kind of Novel ultra-high molecular polyethylene lithium battery composite diaphragm, and described composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Described vistanex matrix both side surface is respectively arranged with described ultra high molecular polyethylene layer, described ultra high molecular polyethylene layer outer surface is respectively arranged with described polyoxyethylene material layer, described polyoxyethylene material layer outer surface is respectively arranged with described polyvinylidene fluoride material layer, is provided with described micropore on described ultra high molecular polyethylene layer, polyoxyethylene material layer and polyvinylidene fluoride material layer.
Further, described ultra high molecular polyethylene membrane thicknesses is 12-38 μ m.
Further, described micro-pore diameter is 0.026-0.038 μ m.
Ultra-high molecular polyethylene lithium battery composite diaphragm of the present utility model, this composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Vistanex matrix both side surface is respectively arranged with the ultra high molecular polyethylene layer, ultra high molecular polyethylene layer outer surface is respectively arranged with the polyoxyethylene material layer, polyoxyethylene material layer outer surface is respectively arranged with the polyvinylidene fluoride material layer, is provided with micropore on ultra high molecular polyethylene layer, polyoxyethylene material layer and polyvinylidene fluoride material layer; Ultra-high molecular polyethylene lithium battery 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 extended 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, reduced the storeroom impedance and assisted electrolyte conducting lithium ion.
Description of drawings
Fig. 1 is the Novel ultra-high molecular polyethylene lithium battery composite diaphragm structural representation that the utility model provides.
In figure: 1, vistanex matrix; 2, ultra high molecular polyethylene layer; 3, polyoxyethylene material layer; 4, polyvinylidene fluoride material layer; 5, 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 Novel ultra-high molecular polyethylene lithium battery composite diaphragm, and this composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Vistanex matrix both side surface is respectively arranged with the ultra high molecular polyethylene layer, ultra high molecular polyethylene layer outer surface is respectively arranged with the polyoxyethylene material layer, polyoxyethylene material layer outer surface is respectively arranged with the polyvinylidene fluoride material layer, is provided with micropore on ultra high molecular polyethylene layer, polyoxyethylene material layer and polyvinylidene fluoride material layer.
As the prioritization scheme of the utility model embodiment, the ultra high molecular polyethylene membrane thicknesses is 12-38 μ m.
As the prioritization scheme of the utility model embodiment, micro-pore diameter is 0.026-0.038 μ m.
Referring to accompanying drawing 1, ultra-high molecular polyethylene lithium battery composite diaphragm of the present utility model is described in further detail.
A kind of Novel ultra-high molecular polyethylene lithium battery composite diaphragm of the utility model, mainly comprise a vistanex matrix 1, vistanex matrix 1 both side surface is respectively equipped with ultra high molecular polyethylene layer 2, outer surface at up and down ultra high molecular polyethylene layer 2 is respectively equipped with polyoxyethylene material layer 3, the outer surface of polyoxyethylene material layer 3 is respectively equipped with polyvinylidene fluoride material layer 4, is distributed with micropore 5 on ultra high molecular polyethylene layer 2 and polyoxyethylene material layer 3, polyvinylidene fluoride material layer 4; Micropore 5 apertures are 0.026-0.038 μ m; The thickness of ultra high molecular polyethylene barrier film is 12-38 μ m.
Ultra-high molecular polyethylene lithium battery composite diaphragm of the present utility model, this composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore; Vistanex matrix both side surface is respectively arranged with the ultra high molecular polyethylene layer, ultra high molecular polyethylene layer outer surface is respectively arranged with the polyoxyethylene material layer, polyoxyethylene material layer outer surface is respectively arranged with the polyvinylidene fluoride material layer, is provided with micropore on ultra high molecular polyethylene layer, polyoxyethylene material layer and polyvinylidene fluoride material layer; Ultra-high molecular polyethylene lithium battery 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 extended 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, reduced the storeroom impedance and assisted electrolyte conducting lithium ion.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (3)
1. a Novel ultra-high molecular polyethylene lithium battery composite diaphragm, is characterized in that, described composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, polyoxyethylene material layer, polyvinylidene fluoride material layer, micropore;
Described vistanex matrix both side surface is respectively arranged with described ultra high molecular polyethylene layer, described ultra high molecular polyethylene layer outer surface is respectively arranged with described polyoxyethylene material layer, described polyoxyethylene material layer outer surface is respectively arranged with described polyvinylidene fluoride material layer, is provided with described micropore on described ultra high molecular polyethylene layer, polyoxyethylene material layer and polyvinylidene fluoride material layer.
2. Novel ultra-high molecular polyethylene lithium battery composite diaphragm as claimed in claim 1, is characterized in that, described ultra high molecular polyethylene membrane thicknesses is 12-38 μ m.
3. Novel ultra-high molecular polyethylene lithium battery composite diaphragm as claimed in claim 1, is characterized in that, described micro-pore diameter is 0.026-0.038 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205237062U CN203026574U (en) | 2012-10-15 | 2012-10-15 | Novel ultra-high molecular weight polyethylene lithium battery composite separating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205237062U CN203026574U (en) | 2012-10-15 | 2012-10-15 | Novel ultra-high molecular weight polyethylene lithium battery composite separating film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026574U true CN203026574U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205237062U Expired - Fee Related CN203026574U (en) | 2012-10-15 | 2012-10-15 | Novel ultra-high molecular weight polyethylene lithium battery composite separating film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026574U (en) |
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2012
- 2012-10-15 CN CN2012205237062U patent/CN203026574U/en not_active Expired - Fee Related
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20181015 |
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| CF01 | Termination of patent right due to non-payment of annual fee |