CN105175884A - Lithium battery diaphragm with stable performance - Google Patents
Lithium battery diaphragm with stable performance Download PDFInfo
- Publication number
- CN105175884A CN105175884A CN201510431038.9A CN201510431038A CN105175884A CN 105175884 A CN105175884 A CN 105175884A CN 201510431038 A CN201510431038 A CN 201510431038A CN 105175884 A CN105175884 A CN 105175884A
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- parts
- zellon
- tetrachloroethylene
- modified
- lithium battery
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Cell Separators (AREA)
Abstract
The invention relates to a lithium battery diaphragm with a stable performance. The diaphragm is prepared from the following components in parts by weight: 5 parts of polyvinyl alcohol, 80 parts of polypropylene, 0.5 part of carbon fiber, 2 parts of polyethylene wax and 5 parts of modified tetrachloroethylene, wherein the modified tetrachloroethylene is prepared from the following raw materials: 100 parts of tetrachloroethylene, 2 parts of purple sweet potato anthocyanin, 0.2 part of rare earth oxides, 0.2 part of polyphosphoric acid and 0.2 part of polyvinylpyrrolidone. A preparation method of the modified tetrachloroethylene comprises: uniformly stirring and mixing the tetrachloroethylene, purple sweet potato anthocyanin, rare earth oxides, polyphosphoric acid and polyvinylpyrrolidone; and carrying out mixed melting and extruding pelletization to obtain the modified tetrachloroethylene. By adding the modified tetrachloroethylene, the problem of transverse shrinkage which is hard to change in a conventional biaxial stretching technology is overcome, transverse shrinkage is prevented, and the safety of the biaxial stretching diaphragm is greatly improved. PP/PE can be used as a raw material, so that the production process is free of pollution to the environment.
Description
Technical field
The present invention relates to technical field of lithium batteries, be specifically related to a kind of lithium battery diaphragm of stable performance.
Background technology
Lithium battery diaphragm belongs to the battery supplementary material of national encourage growth, and since entering 21 century, the energy becomes the bottleneck of restriction China's economy and social development day by day.China will realize the Sustainable development of economic quick growth and society, needs the Development of Novel energy and energy and material in a hurry.Battery industry is the important component part of new energy field, is related to the realization of the strategy of sustainable development.Battery diaphragm novel material is then development energy technology, improves the main force of Energy production and utilising efficiency, has now become a new focus of global economic development.
At present, the whole world only has a few countries such as Japan, the U.S. to have the production technology of lithium ion battery polymer barrier film, and accomplishes scale production.China starts late in the research and development of lithium ion battery separator, product is main dependence on import still, the average sales price of barrier film is 8 ~ 15 Yuan/㎡, account for 1/4 of whole battery cost, thus cause lithium ion battery market value to remain high, the barrier film market of domestic more than 80% by state monopolies such as U.S., days, domestic barrier film mainly in, low-end market use.Realize lithium ion battery separator production domesticization that is high-grade, high-quality, contribute to domestic barrier film Industry Quick Development, reduce lithium ion battery separator import simultaneously, and reduce the market value of lithium ion battery separator and even lithium ion battery.
Barrier film cost accounts for two to three one-tenth of lithium cell total cost.State's inner septum industry rate of capacity utilization is low, application mainly concentrates on low side field, and power lithium battery etc. are high-end answers the main dependence on import in field, the comparatively accumulative decline about 70% before 3 years of dry method barrier film price, rate of gross profit is down to about 25%, and wet method membrane technique is still immature.
On September 8th, 2010, Premier Wen Jiabao held Executive Meeting of the State Council, review and pass in principle " State Council is about the decision accelerating cultivation and development strategy new industry ", determining the emphasis direction of seven industry developments, main task and support policy.From China's national situation and science and technology, Industry Foundation, present stage selects energy-conserving and environment-protective, generation information technology, biology, high-end equipment manufacturing, new forms of energy, novel material and new-energy automobile seven industries, concentrates strength in major fields, accelerates to advance.Adhere to that playing market value basis effect promotes to combine with government guidance, scientific and technical innovation with realize industrialization and combine, deepen the reform of the system, with enterprises as principal components, advance the combination involving production, teaching & research, emerging strategic industries is cultivated the guiding industry and the mainstay industry that become national economy.
Along with the widespread use of lithium cell, diaphragm material have also been obtained develop rapidly and sees, meet country's " hi-tech industrialization major fields guide of current preference development ", belong to: (11) items such as cutting edge technology listed in " national long time scientific technical development eye planning outline (2006-2020) " simultaneously: high efficient secondary battery material and gordian technique special topic in efficient energy material technology." low cost lithium battery diaphragm key technology research " is classified as key industryization guiding project by 2008 annual national " 863 " plans, and the improvement of membrane properties plays an important role to the over-all properties improving lithium cell.
Summary of the invention
It is high that technical problem to be solved by this invention is to provide a kind of security, the lithium battery diaphragm of stable performance.
Technical problem to be solved by this invention realizes by the following technical solutions:
A lithium battery diaphragm for stable performance, is made up of the component of following parts by weight: polyvinyl alcohol 5 parts, polypropylene 80 parts, Carbon fibe 0.5 part, polyethylene wax 2 parts, modification zellon 5 parts;
The preparation method of above-mentioned barrier film is as follows:
1) take by above-mentioned parts by weight: polyvinyl alcohol, polypropylene, Carbon fibe, polyethylene wax, modification zellon;
2) by step 1) in raw material mixing, heating, send into forcing machine melt extrude, afterwards on slab roller cooling cast sheet;
3) to step 2) in sheet carry out preheating, stretching, after completing, cooling tempering, makes film;
4) to step 3) in film after sizing carry out rolling, cut greatly, littlely to cut, then packaging forms lithium battery diaphragm.
Above-mentioned modification zellon is made up of following raw material: zellon 100 parts, purple sweet potato cyanidin 2 parts, rare earth oxide 0.2 part, polyphosphoric acid 0.2 part, polyvinylpyrrolidone 0.2 part; Preparation method is: respectively by above-mentioned: zellon, purple sweet potato cyanidin, rare earth oxide, polyphosphoric acid and polyvinylpyrrolidone are uniformly mixed, and mixing melting, extruding pelletization can obtain modification zellon;
The above-mentioned operation that is uniformly mixed can be carried out in general mixing machine, controls rotating speed at 300-400 rev/min; Melting mixing, extruding pelletization operation can be carried out in general screw extrusion press, forcing machine each section of temperature is set as: 250 ± 5 DEG C, 260 ± 5 DEG C, 265 ± 5 DEG C, 265 ± 5 DEG C, screw speed is 90 ~ 150rpm, and injector each section of extruder temperature is set to: 250 ± 5 DEG C, 265 ± 5 DEG C, 270 ± 5 DEG C, 280 ± 5 DEG C.
Beneficial effect of the present invention: the present invention is by adding modification zellon, overcome in traditional double pull technology the transverse contraction problem being difficult to change, accomplish horizontal ungauged regions, substantially increase two security of drawing barrier film, can use PP PE as raw material, production technique does not produce pollution to environment.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
A lithium battery diaphragm for stable performance, is made up of the component of following parts by weight: polyvinyl alcohol 5 parts, polypropylene 80 parts, Carbon fibe 0.5 part, polyethylene wax 2 parts, modification zellon 5 parts;
The preparation method of above-mentioned barrier film is as follows:
1) take by above-mentioned parts by weight: polyvinyl alcohol, polypropylene, Carbon fibe, polyethylene wax, modification zellon;
2) by step 1) in raw material mixing, heating, send into forcing machine melt extrude, afterwards on slab roller cooling cast sheet;
3) to step 2) in sheet carry out preheating, stretching, after completing, cooling tempering, makes film;
4) to step 3) in film after sizing carry out rolling, cut greatly, littlely to cut, then packaging forms lithium battery diaphragm.
Above-mentioned modification zellon is made up of following raw material: zellon 100 parts, purple sweet potato cyanidin 2 parts, rare earth oxide 0.2 part, polyphosphoric acid 0.2 part, polyvinylpyrrolidone 0.2 part; Preparation method is: respectively by above-mentioned: zellon, purple sweet potato cyanidin, rare earth oxide, polyphosphoric acid and polyvinylpyrrolidone are uniformly mixed, and mixing melting, extruding pelletization can obtain modification zellon;
The above-mentioned operation that is uniformly mixed can be carried out in general mixing machine, controls rotating speed at 300-400 rev/min; Melting mixing, extruding pelletization operation can be carried out in general screw extrusion press, forcing machine each section of temperature is set as: 250 ± 5 DEG C, 260 ± 5 DEG C, 265 ± 5 DEG C, 265 ± 5 DEG C, screw speed is 90 ~ 150rpm, and injector each section of extruder temperature is set to: 250 ± 5 DEG C, 265 ± 5 DEG C, 270 ± 5 DEG C, 280 ± 5 DEG C.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (1)
1. a lithium battery diaphragm for stable performance, is characterized in that, is made up of the component of following parts by weight: polyvinyl alcohol 5 parts, polypropylene 80 parts, Carbon fibe 0.5 part, polyethylene wax 2 parts, modification zellon 5 parts;
The preparation method of above-mentioned barrier film is as follows:
1) take by above-mentioned parts by weight: polyvinyl alcohol, polypropylene, Carbon fibe, polyethylene wax, modification zellon;
2) by step 1) in raw material mixing, heating, send into forcing machine melt extrude, afterwards on slab roller cooling cast sheet;
3) to step 2) in sheet carry out preheating, stretching, after completing, cooling tempering, makes film;
4) to step 3) in film after sizing carry out rolling, cut greatly, littlely to cut, then packaging forms lithium battery diaphragm;
Above-mentioned modification zellon is made up of following raw material: zellon 100 parts, purple sweet potato cyanidin 2 parts, rare earth oxide 0.2 part, polyphosphoric acid 0.2 part, polyvinylpyrrolidone 0.2 part; Preparation method is: respectively by above-mentioned: zellon, purple sweet potato cyanidin, rare earth oxide, polyphosphoric acid and polyvinylpyrrolidone are uniformly mixed, and mixing melting, extruding pelletization can obtain modification zellon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431038.9A CN105175884A (en) | 2015-07-20 | 2015-07-20 | Lithium battery diaphragm with stable performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431038.9A CN105175884A (en) | 2015-07-20 | 2015-07-20 | Lithium battery diaphragm with stable performance |
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| Publication Number | Publication Date |
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| CN105175884A true CN105175884A (en) | 2015-12-23 |
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| CN201510431038.9A Pending CN105175884A (en) | 2015-07-20 | 2015-07-20 | Lithium battery diaphragm with stable performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129316A (en) * | 2016-08-29 | 2016-11-16 | 无锡市宝来电池有限公司 | A kind of lithium ion battery separator material of high temperature resistance and high strength |
| CN110527450A (en) * | 2019-08-12 | 2019-12-03 | 东莞东阳光科研发有限公司 | A kind of polypropylene film and preparation method thereof, aluminum plastic film and lithium battery |
| CN112290164A (en) * | 2020-11-03 | 2021-01-29 | 江苏厚生新能源科技有限公司 | High-performance additive suitable for producing ultrathin lithium battery diaphragm and preparation and application thereof |
| CN112563660A (en) * | 2020-12-07 | 2021-03-26 | 界首市天鸿新材料股份有限公司 | Preparation method of lithium battery diaphragm special for solid electrolyte |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633273A (en) * | 2013-12-10 | 2014-03-12 | 深圳市星源材质科技有限公司 | High-puncture-strength lithium ion battery diaphragm and preparation method thereof |
-
2015
- 2015-07-20 CN CN201510431038.9A patent/CN105175884A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633273A (en) * | 2013-12-10 | 2014-03-12 | 深圳市星源材质科技有限公司 | High-puncture-strength lithium ion battery diaphragm and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 卓昌明主编: "《塑料应用技术手册》", 31 May 2013, 机械工业出版社 * |
| 李珂等: "聚丙烯/稀土氧化物复合材料性能与微观结构", 《工程塑料应用》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129316A (en) * | 2016-08-29 | 2016-11-16 | 无锡市宝来电池有限公司 | A kind of lithium ion battery separator material of high temperature resistance and high strength |
| CN110527450A (en) * | 2019-08-12 | 2019-12-03 | 东莞东阳光科研发有限公司 | A kind of polypropylene film and preparation method thereof, aluminum plastic film and lithium battery |
| CN110527450B (en) * | 2019-08-12 | 2022-01-14 | 东莞东阳光科研发有限公司 | Polypropylene film, preparation method thereof, aluminum plastic film and lithium battery |
| CN112290164A (en) * | 2020-11-03 | 2021-01-29 | 江苏厚生新能源科技有限公司 | High-performance additive suitable for producing ultrathin lithium battery diaphragm and preparation and application thereof |
| CN112290164B (en) * | 2020-11-03 | 2022-06-17 | 江苏厚生新能源科技有限公司 | High-performance additive suitable for producing ultrathin lithium battery diaphragm and preparation and application thereof |
| CN112563660A (en) * | 2020-12-07 | 2021-03-26 | 界首市天鸿新材料股份有限公司 | Preparation method of lithium battery diaphragm special for solid electrolyte |
| CN112563660B (en) * | 2020-12-07 | 2022-05-27 | 界首市天鸿新材料股份有限公司 | Method for preparing diaphragm for solid electrolyte lithium battery |
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Application publication date: 20151223 |