CN202888288U - Novel composite polypropylene lithium battery diaphragm with high performance - Google Patents
Novel composite polypropylene lithium battery diaphragm with high performance Download PDFInfo
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- CN202888288U CN202888288U CN2012204972418U CN201220497241U CN202888288U CN 202888288 U CN202888288 U CN 202888288U CN 2012204972418 U CN2012204972418 U CN 2012204972418U CN 201220497241 U CN201220497241 U CN 201220497241U CN 202888288 U CN202888288 U CN 202888288U
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- lithium battery
- battery diaphragm
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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 composite polypropylene lithium battery diaphragm with high performance. The lithium battery diaphragm comprises a lithium battery diaphragm body, hydrophilic material layers, and micro-pores, wherein the hydrophilic material layers are arranged at the upper surface and the lower surface of the lithium battery diaphragm body; and the micro-pores are formed in the lithium battery diaphragm body and the hydrophilic material layers. The novel composite polypropylene lithium battery diaphragm with high performance disclosed by the utility model has good corrosion resistance and temperature resistance in use, and can keep stable operating characteristics under a corrosion environment of electrolyte in the battery and in temperature change in use. Thus, the use stability of the battery is prolonged; and the property of the battery is improved. The polyoxyethylene hydrophilic material layers are arranged at the surfaces, so that the hydrophily of the surface of the diaphragm is improved.
Description
Technical field
The utility model belongs to field of polymer technology, relates in particular to a kind of composite polypropylene lithium battery diaphragm of novel high-performance.
Background technology
Polypropylene is one of five large general-purpose plastics, since nineteen fifty-seven is realized suitability for industrialized production, and the history of existing five more than ten years.Polyacrylic mechanical property is excellent, higher yield strength, hot strength, case hardness and modulus of elasticity etc. is arranged, and have preferably heat resistance, and the fusing point of HOPP can use under 100-120 ℃ environment for a long time up to 165 ℃; Polypropylene is semicrystalline polymeric, and after adding nucleator or biaxial tension, goods have good properties of transparency; Polypropylene also has good electrical insulating property, easily machine-shaping, the advantage such as cheap.Ultrahigh molecular weight polypropylene has been applied to numerous areas at present, but not yet is applied on the 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 the composite polypropylene lithium battery diaphragm at a kind of novel high-performance, be intended to solve in the changing environment of the corrosion that has been full of electrolyte and temperature, using of existing in the existing lithium ion battery separator, 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 composite polypropylene lithium battery diaphragm of novel high-performance, and described lithium battery diaphragm comprises: lithium battery diaphragm, water wetted material layer, micropore; Described lithium battery diaphragm upper and lower surface arranges described water wetted material layer, and described micropore is arranged on described lithium battery diaphragm and the water wetted material layer.
Further, described lithium battery diaphragm thickness is 12-38 μ m.
Further, described micro-pore diameter is 0.026-0.038 μ m.
High performance composite polypropylene lithium battery diaphragm of the present utility model, this lithium battery diaphragm comprises: lithium battery diaphragm, water wetted material layer, micropore; The lithium battery diaphragm upper and lower surface arranges the water wetted material layer, and micropore is arranged on lithium battery diaphragm and the water wetted material layer.High performance composite polypropylene lithium battery diaphragm of the present utility model, has 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 is set on the surface, has improved the hydrophily of membrane surface.
Description of drawings
Fig. 1 is the structural representation of the composite polypropylene lithium battery diaphragm of the novel high-performance that provides of the utility model.
Among the figure: 1, lithium battery diaphragm; 2, water wetted material layer; 3, 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 composite polypropylene lithium battery diaphragm of novel high-performance, and this lithium battery diaphragm comprises: lithium battery diaphragm, water wetted material layer, micropore; The lithium battery diaphragm upper and lower surface arranges the water wetted material layer, and micropore is arranged on lithium battery diaphragm and the water wetted material layer.
As the prioritization scheme of the utility model embodiment, lithium battery diaphragm thickness 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, the high performance composite polypropylene lithium battery diaphragm of the utility model is described in further detail.
As shown in Figure 1, the composite polypropylene lithium battery diaphragm of novel high-performance of the present utility model, mainly comprise lithium battery diaphragm 1, micropore 3 and water wetted material layer 2, lithium battery diaphragm 1 is supra polymer polypropylene integrative-structure, upper and lower surface at lithium battery diaphragm 1 is respectively equipped with polyoxyethylene (PEO) water wetted material layer 2, is equipped with micropore 3 at lithium battery diaphragm 1 and water wetted material layer 2; Micropore 3 apertures are 0.026-0.038 μ m, and the thickness of lithium battery diaphragm 1 is 12-38 μ m; Be mixed with nano silicon in the water wetted material layer 2.
High performance composite polypropylene lithium battery diaphragm of the present utility model, this lithium battery diaphragm comprises: lithium battery diaphragm, water wetted material layer, micropore; The lithium battery diaphragm upper and lower surface arranges the water wetted material layer, and micropore is arranged on lithium battery diaphragm and the water wetted material layer.High performance composite polypropylene lithium battery diaphragm of the present utility model, has 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 is set on the surface, has improved the hydrophily of membrane surface.
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. the composite polypropylene lithium battery diaphragm of a novel high-performance is characterized in that, described lithium battery diaphragm comprises: lithium battery diaphragm, water wetted material layer, micropore;
Described lithium battery diaphragm upper and lower surface arranges described water wetted material layer, and described micropore is arranged on described lithium battery diaphragm and the water wetted material layer.
2. the composite polypropylene lithium battery diaphragm of novel high-performance as claimed in claim 1 is characterized in that, described lithium battery diaphragm thickness is 12-38 μ m.
3. the composite polypropylene lithium battery diaphragm of novel high-performance 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 |
|---|---|---|---|
| CN2012204972418U CN202888288U (en) | 2012-09-24 | 2012-09-24 | Novel composite polypropylene lithium battery diaphragm with high performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204972418U CN202888288U (en) | 2012-09-24 | 2012-09-24 | Novel composite polypropylene lithium battery diaphragm with high performance |
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| Publication Number | Publication Date |
|---|---|
| CN202888288U true CN202888288U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012204972418U Expired - Fee Related CN202888288U (en) | 2012-09-24 | 2012-09-24 | Novel composite polypropylene lithium battery diaphragm with high performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288685A (en) * | 2017-12-29 | 2018-07-17 | 界首市天鸿新材料股份有限公司 | Air compressing device is tried out in a kind of utilization prepares lithium battery diaphragm processing technology |
-
2012
- 2012-09-24 CN CN2012204972418U patent/CN202888288U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288685A (en) * | 2017-12-29 | 2018-07-17 | 界首市天鸿新材料股份有限公司 | Air compressing device is tried out in a kind of utilization prepares lithium battery diaphragm processing technology |
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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: 20130417 Termination date: 20180924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |