CN202888293U - High liquid adsorbing capacity composite diaphragm of ultra high molecular weight polyethylene (UHMWPE) lithium battery - Google Patents
High liquid adsorbing capacity composite diaphragm of ultra high molecular weight polyethylene (UHMWPE) lithium battery Download PDFInfo
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- CN202888293U CN202888293U CN2012205093668U CN201220509366U CN202888293U CN 202888293 U CN202888293 U CN 202888293U CN 2012205093668 U CN2012205093668 U CN 2012205093668U CN 201220509366 U CN201220509366 U CN 201220509366U CN 202888293 U CN202888293 U CN 202888293U
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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 high liquid adsorbing capacity composite diaphragm of an ultra high molecular weight polyethylene (UHMWPE) lithium battery. The composite diaphragm comprises UHMWPE, first micropores, polyethylene material layers, second micropores and alumina ceramic layers, wherein the UHMWPE is provided with the first micropores; the polyethylene material layers are arranged on the upper and lower surfaces of the UHMWPE and are provided with the second micropores; and the alumina ceramic layers are arranged on the outer surfaces of the polyethylene material layers. The composite diaphragm has the beneficial effects that microporous membranes are arranged on the UHMWPE, the polyethylene material layers are arranged on the surfaces of the UHMWPE by utilizing the coating technology, and the micropores running through the diaphragm are arranged on the polyethylene material layers, are funnel-shaped and are butt-jointed with the micropores on the UHMWPE, thus improving the liquid adsorbing capacity of the diaphragm; and the alumina ceramic layers are coated on the outer layers, so that the diaphragm further has excellent heat resistance.
Description
Technical field
The utility model belongs to the lithium battery diaphragm field, relates in particular to a kind of ultra-high molecular polyethylene lithium battery composite diaphragm of high extension liquid ability.
Background technology
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, has unrivaled wear-resisting, shock-resistant, the self-lubricating of common polythene and other engineering plastics, corrosion-resistant, impact-absorbing energy, low temperature resistant, the combination property such as 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 owing to its hydrophily is not good.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.And the microporous barrier of lithium battery adopts cylindrical hole more at present, and the extension liquid of film (electrolyte of film absorption) ability is general, is unfavorable for that ion passes through.
The utility model content
The purpose of this utility model is to utilize a kind of ultra-high molecular polyethylene lithium battery composite diaphragm of high extension liquid ability, and it is relatively poor general with extension liquid ability to be intended to solve the stability in use that has lithium battery diaphragm now, is unfavorable for the problem that ion passes through.
The purpose of this utility model is to provide a kind of ultra-high molecular polyethylene lithium battery composite diaphragm of high extension liquid ability, and described composite diaphragm comprises: ultra high molecular polyethylene, the first micropore, the polypropylene material bed of material, the second micropore, aluminium oxide ceramics; Described ultra high molecular polyethylene arranges described the first micropore, and described ultra high molecular polyethylene upper and lower surface arranges the described polypropylene material bed of material, and the described polypropylene material bed of material arranges described the second micropore, and described polypropylene material bed of material outer surface arranges described aluminium oxide ceramics layer.
Further, described the first micropore size adopts 0.026-0.038 μ m.
Further, the thickness of described polyethylene barrier film is 12-38 μ m.
Further, described the second micropore is shaped as infundibulate.
Further, described polypropylene material bed of material outer surface arranges heat-resisting aluminium oxide ceramics layer.
The high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability of the present utility model, this composite diaphragm comprises: ultra high molecular polyethylene, the first micropore, the polypropylene material bed of material, the second micropore, aluminium oxide ceramics; Ultra high molecular polyethylene arranges the first micropore, and the ultra high molecular polyethylene upper and lower surface arranges the polypropylene material bed of material, and the polypropylene material bed of material arranges the second micropore, and polypropylene material bed of material outer surface arranges the aluminium oxide ceramics layer.The high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability of the present utility model when working in the electrolyte corrosive environment of battery, can keep good heat-resisting quantity and stability, thereby prolong the useful life of battery.Owing to hang the raising of liquid ability, strengthened the performance of battery simultaneously, made the operation of lithium ion battery efficient stable.
Description of drawings
Fig. 1 is that the height that the utility model provides is hung the ultra-high molecular polyethylene lithium battery composite diaphragm structural representation of liquid ability.
Among the figure: 1, ultra high molecular polyethylene; 11, the first micropore; 2, the polypropylene material bed of material; 21, the second micropore; 3, aluminium oxide ceramics.
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 ultra-high molecular polyethylene lithium battery composite diaphragm of high extension liquid ability, and this composite diaphragm comprises: ultra high molecular polyethylene, the first micropore, the polypropylene material bed of material, the second micropore, aluminium oxide ceramics; Ultra high molecular polyethylene arranges the first micropore, and the ultra high molecular polyethylene upper and lower surface arranges the polypropylene material bed of material, and the polypropylene material bed of material arranges the second micropore, and polypropylene material bed of material outer surface arranges the aluminium oxide ceramics layer.
As the prioritization scheme of the utility model embodiment, the first micropore size adopts 0.026-0.038 μ m.
As the prioritization scheme of the utility model embodiment, the thickness of polyethylene barrier film is 12-38 μ m.
As the prioritization scheme of the utility model embodiment, the second micropore be shaped as infundibulate.
As the prioritization scheme of the utility model embodiment, polypropylene material bed of material outer surface arranges heat-resisting aluminium oxide ceramics layer.
Referring to accompanying drawing 1, the high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability of the utility model is described in further detail.
As shown in Figure 1, a kind of novel high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability of the present utility model, at ultra high molecular polyethylene 1 the first micropore 11, the first micropores 11 apertures are set and adopt 0.026-0.038 μ m, the thickness of polyethylene barrier film is 12-38 μ m; And utilize paint-on technique that the polypropylene material bed of material 2 is set in ultra high molecular polyethylene 1 upper and lower surface, improve the water-wet behavior of barrier film, at the polypropylene material bed of material 2 the second micropore 21 is set, the shape of the second micropore 21 is adopted infundibulate, dock with the first micropore 11 at the path place, funnel shaped maximum gauge is 3: 1 to 10: 1 with the minimum diameter ratio, and micro-pore shape adopts infundibulate to consist of, when identical porosity, the extension liquid ability of this lithium ion battery separator is 2-4 times of common micro-pore septum; Simultaneous oxidation aluminium ceramic layer 3 can further improve the thermal endurance of barrier film.
The high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability of the present utility model, this composite diaphragm comprises: ultra high molecular polyethylene, the first micropore, the polypropylene material bed of material, the second micropore, aluminium oxide ceramics; Ultra high molecular polyethylene arranges the first micropore, and the ultra high molecular polyethylene upper and lower surface arranges the polypropylene material bed of material, and the polypropylene material bed of material arranges the second micropore, and polypropylene material bed of material outer surface arranges the aluminium oxide ceramics layer.The high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability of the present utility model when working in the electrolyte corrosive environment of battery, can keep good heat-resisting quantity and stability, thereby prolong the useful life of battery.Owing to hang the raising of liquid ability, strengthened the performance of battery simultaneously, made the operation of lithium ion battery efficient stable.
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 (5)
1. the ultra-high molecular polyethylene lithium battery composite diaphragm of one kind high extension liquid ability is characterized in that, described composite diaphragm comprises: ultra high molecular polyethylene, the first micropore, the polypropylene material bed of material, the second micropore, aluminium oxide ceramics;
Described ultra high molecular polyethylene arranges described the first micropore, and described ultra high molecular polyethylene upper and lower surface arranges the described polypropylene material bed of material, and the described polypropylene material bed of material arranges described the second micropore, and described polypropylene material bed of material outer surface arranges described aluminium oxide ceramics layer.
2. the high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability as claimed in claim 1 is characterized in that, described the first micropore size adopts 0.026-0.038 μ m.
3. the high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability as claimed in claim 1 is characterized in that the thickness of described polyethylene barrier film is 12-38 μ m.
4. the high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability as claimed in claim 1 is characterized in that, described the second micropore be shaped as infundibulate.
5. the high ultra-high molecular polyethylene lithium battery composite diaphragm of hanging the liquid ability as claimed in claim 1 is characterized in that described polypropylene material bed of material outer surface arranges heat-resisting aluminium oxide ceramics layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205093668U CN202888293U (en) | 2012-09-28 | 2012-09-28 | High liquid adsorbing capacity composite diaphragm of ultra high molecular weight polyethylene (UHMWPE) lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205093668U CN202888293U (en) | 2012-09-28 | 2012-09-28 | High liquid adsorbing capacity composite diaphragm of ultra high molecular weight polyethylene (UHMWPE) lithium battery |
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| Publication Number | Publication Date |
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| CN202888293U true CN202888293U (en) | 2013-04-17 |
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| CN2012205093668U Expired - Fee Related CN202888293U (en) | 2012-09-28 | 2012-09-28 | High liquid adsorbing capacity composite diaphragm of ultra high molecular weight polyethylene (UHMWPE) lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455476A (en) * | 2020-04-07 | 2020-07-28 | 北京化工大学常州先进材料研究院 | Polyimide nanofiber membrane coaxially coated with aluminum oxide and preparation method thereof |
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2012
- 2012-09-28 CN CN2012205093668U patent/CN202888293U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455476A (en) * | 2020-04-07 | 2020-07-28 | 北京化工大学常州先进材料研究院 | Polyimide nanofiber membrane coaxially coated with aluminum oxide and preparation method thereof |
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| 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: 20130417 Termination date: 20180928 |