CN110197884A - A kind of lithium battery diaphragm polyethene microporous membrane and preparation method - Google Patents
A kind of lithium battery diaphragm polyethene microporous membrane and preparation method Download PDFInfo
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- CN110197884A CN110197884A CN201910496736.5A CN201910496736A CN110197884A CN 110197884 A CN110197884 A CN 110197884A CN 201910496736 A CN201910496736 A CN 201910496736A CN 110197884 A CN110197884 A CN 110197884A
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- lithium battery
- microporous membrane
- battery diaphragm
- polyethene microporous
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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
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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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
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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
- H01M50/411—Organic material
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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
- H01M50/44—Fibrous material
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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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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cell Separators (AREA)
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Abstract
The present invention relates to lithium battery diaphragm field of material technology, and a kind of lithium battery diaphragm polyethene microporous membrane and preparation method are disclosed, the raw material including following parts by weight proportion: 25~35g high density polyethylene (HDPE), 100mL atoleine, 1~2g antioxidant 1010, nano-silicon dioxide particle nucleating agent.The technical issues of present invention solves lithium battery diaphragm polyethene microporous membrane, existing because micropore is excessive inhomogenous with micropore size, and the service performance of battery is caused to decline.
Description
Technical field
The present invention relates to lithium battery diaphragm field of material technology, specially a kind of lithium battery diaphragm polyethene microporous membrane and
Preparation method.
Background technique
Lithium battery have many advantages, such as high-energy density, memory-less effect, have extended cycle life, it is environmentally friendly and by widely
It uses.Core material of the diaphragm as lithium ion battery directly affects the energy density, power density, cycle life of battery
And safety.The intensity of polyethene microporous membrane is good, is resistant to electrolytic corrosion, is nontoxic, cheap, hot can be closed, become at high temperature
Main commercialization diaphragm.
Polyethene microporous membrane generallys use wet process (thermally induced phase separation, TIPS) technique to prepare, and can be formed and is similar to
Circular nano grade pore.The consistency of micropore has a great impact for the performance of battery, and hole crosses conference and accelerates putting certainly for battery
Electric process, the size in hole can unevenly make current density uneven, to reduce the voltage consistency of battery.Therefore, improve poly- second
The microcellular structure of alkene microporous barrier has very important significance to the service performance for improving lithium battery.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of lithium battery diaphragm polyethene microporous membrane and preparation sides
Method solves lithium battery diaphragm polyethene microporous membrane, existing because micropore is excessive inhomogenous with micropore size, leads to battery
The technical issues of service performance declines.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme:
A kind of lithium battery diaphragm polyethene microporous membrane, the raw material including following parts by weight proportion: 25~35g high density
Polyethylene, 100mL atoleine, 1~2g antioxidant 1010, nano-silicon dioxide particle nucleating agent.
Preferably, the average grain diameter of the nano-silicon dioxide particle nucleating agent is within the scope of 80~100nm.
A kind of preparation method of lithium battery diaphragm polyethene microporous membrane, comprising the following steps:
(1) nano-silicon dioxide particle nucleating agent is prepared；
(2) by 25~35g high density polyethylene (HDPE), 100mL atoleine, 1~2g antioxidant 1010 and above-mentioned preparation
Nano-silicon dioxide particle nucleating agent is added in the reactor equipped with agitating device, heating device and nitrogen protection device,
Nitrogen protection, temperature are 170~200 DEG C, revolving speed is 2~3h of reaction under 600~800rpm, obtain homogeneous phase solution；
(3) after, the homogeneous phase solution of above-mentioned preparation is put into electric-heating die, is 170~200 DEG C, pressure in temperature
It is formed for hot pressing under 8~12MPa, it is then sudden cold in 0 DEG C of distilled water, obtain membrane component；
(4) atoleine in membrane component is extracted using dehydrated alcohol, is placed in vacuum oven later, in
Vacuum degree 133Pa, 2~3h is dried in vacuo at 60~80 DEG C of temperature, and at 100 DEG C using clamping mold it is fixed carry out 3~
Lithium battery diaphragm polyethene microporous membrane is prepared in the thermal finalization of 5min.
Preferably, in the step (3), homogeneous phase solution is put into electric-heating die, temperature is 180 DEG C, pressure is
Hot pressing forms under 10MPa.
(3) beneficial technical effect
Compared with prior art, the present invention has following beneficial technical effect:
Using atoleine as diluent, nanometer two of the inorganic nucleator average grain diameter within the scope of 80~100nm is added
Silicon oxide particle prepares polyethene microporous membrane.The addition of nano-silicon dioxide particle so that nucleus quantity increases, with out-phase at
Kernel mode is grown, and in phase separation, polyethylene starts to crystallize in higher temperature, and the movement of molecule segment is more
It is active, crystalline rate is improved, is grown in an orderly manner conducive to nucleus and arranges the whole structure of established practice.Spherocrystal quantity increases so that ball
The gap of intergranular also becomes more, and porosity increases, and imbibition rate also increases, so that ionic conductivity is improved, the cycle performance of battery
Also more stable；
Lithium battery diaphragm prepared by the present invention is tested for the property with polyethene microporous membrane, porosity be 39~
42%, imbibition rate is 123~128%.
Specific embodiment
Raw material used in the following embodiment is as follows:
High density polyethylene (HDPE) (HDPE, DGDA6098 type, Sinopec), (LP analyzes pure, Tianjin Ke Miou to atoleine
Chemical reagent Co., Ltd), dehydrated alcohol (analyzes pure, Tianjin chemical reagent factory)；
Embodiment one:
(1) ammonium hydroxide, 20mL ultrapure water and 100mL dehydrated alcohol that 8mL volume fraction is 25% are added and are stirred equipped with magnetic force
In the reactor for mixing device, temperature control equipment and titration outfit, in the magnetic agitation that temperature is 25 DEG C, revolving speed is 200rpm
Under, the ethyl orthosilicate of 6.5mL is added in reactor with 1 drop/s drop rate, after being added dropwise, is switched under 300rpm
Magnetic agitation 10h, and entire reaction process keep the temperature at it is invariable at 25 DEG C, after reaction terminates, through filtration treatment,
Until using milli-Q water nano-silicon dioxide particle to PH=7, average grain diameter is prepared within the scope of 80~100nm
Nano-silicon dioxide particle nucleating agent；
(2) by 25g high density polyethylene (HDPE), 100mL atoleine, 1g antioxidant 1010 and above-mentioned preparation nano-silica
SiClx particle nucleation agent is added in the reactor equipped with agitating device, heating device and nitrogen protection device, is protected in nitrogen
Shield, temperature are 170 DEG C, revolving speed reacts 2h under being 600rpm, obtain homogeneous phase solution；
(3) after, the homogeneous phase solution of above-mentioned preparation is put into electric-heating die, temperature be 170 DEG C, pressure 8MPa
Lower hot pressing molding, it is then sudden cold in 0 DEG C of distilled water, obtain membrane component；
(4) atoleine in membrane component is extracted using dehydrated alcohol, is placed in vacuum oven later, in
It is dried in vacuo 2h under vacuum degree 133Pa, temperature 60 C, and fixes the thermal finalization for carrying out 3min using clamping mold at 100 DEG C,
Lithium battery diaphragm polyethene microporous membrane is prepared；
(5) lithium battery diaphragm of above-mentioned preparation is tested for the property with polyethene microporous membrane, porosity 39% is inhaled
Liquid rate is 123%.
Embodiment two:
(1) ammonium hydroxide, 20mL ultrapure water and 100mL dehydrated alcohol that 8mL volume fraction is 25% are added and are stirred equipped with magnetic force
In the reactor for mixing device, temperature control equipment and titration outfit, in the magnetic agitation that temperature is 25 DEG C, revolving speed is 200rpm
Under, the ethyl orthosilicate of 6.5mL is added in reactor with 1 drop/s drop rate, after being added dropwise, is switched under 300rpm
Magnetic agitation 10h, and entire reaction process keep the temperature at it is invariable at 25 DEG C, after reaction terminates, through filtration treatment,
Until using milli-Q water nano-silicon dioxide particle to PH=7, average grain diameter is prepared within the scope of 80~100nm
Nano-silicon dioxide particle nucleating agent；
(2) by 35g high density polyethylene (HDPE), 100mL atoleine, 2g antioxidant 1010 and above-mentioned preparation nano-silica
SiClx particle nucleation agent is added in the reactor equipped with agitating device, heating device and nitrogen protection device, is protected in nitrogen
Shield, temperature are 200 DEG C, revolving speed reacts 3h under being 800rpm, obtain homogeneous phase solution；
(3) after, the homogeneous phase solution of above-mentioned preparation is put into electric-heating die, temperature is 200 DEG C, pressure is
Hot pressing forms under 12MPa, then sudden cold in 0 DEG C of distilled water, obtains membrane component；
(4) atoleine in membrane component is extracted using dehydrated alcohol, is placed in vacuum oven later, in
Vacuum degree 133Pa, 3h is dried in vacuo at 80 DEG C of temperature, and using the fixed thermal finalization for carrying out 5min of clamping mold at 100 DEG C,
Lithium battery diaphragm polyethene microporous membrane is prepared；
(5) lithium battery diaphragm of above-mentioned preparation is tested for the property with polyethene microporous membrane, porosity 40% is inhaled
Liquid rate is 126%.
Embodiment three:
(1) ammonium hydroxide, 20mL ultrapure water and 100mL dehydrated alcohol that 8mL volume fraction is 25% are added and are stirred equipped with magnetic force
In the reactor for mixing device, temperature control equipment and titration outfit, in the magnetic agitation that temperature is 25 DEG C, revolving speed is 200rpm
Under, the ethyl orthosilicate of 6.5mL is added in reactor with 1 drop/s drop rate, after being added dropwise, is switched under 300rpm
Magnetic agitation 10h, and entire reaction process keep the temperature at it is invariable at 25 DEG C, after reaction terminates, through filtration treatment,
Until using milli-Q water nano-silicon dioxide particle to PH=7, average grain diameter is prepared within the scope of 80~100nm
Nano-silicon dioxide particle nucleating agent；
(2) by the nanometer two of 30g high density polyethylene (HDPE), 100mL atoleine, 1.5g antioxidant 1010 and above-mentioned preparation
Silicon oxide particle nucleating agent is added in the reactor equipped with agitating device, heating device and nitrogen protection device, is protected in nitrogen
Shield, temperature are 180 DEG C, revolving speed reacts 2.5h under being 700rpm, obtain homogeneous phase solution；
(3) after, the homogeneous phase solution of above-mentioned preparation is put into electric-heating die, temperature is 180 DEG C, pressure is
Hot pressing forms under 10MPa, then sudden cold in 0 DEG C of distilled water, obtains membrane component；
(4) atoleine in membrane component is extracted using dehydrated alcohol, is placed in vacuum oven later, in
2.5h is dried in vacuo under vacuum degree 133Pa, temperature 70 C, and fixed using the fixed heat for carrying out 4min of clamping mold at 100 DEG C
Lithium battery diaphragm polyethene microporous membrane is prepared in type；
(5) lithium battery diaphragm of above-mentioned preparation is tested for the property with polyethene microporous membrane, porosity 42% is inhaled
Liquid rate is 128%.
Claims (4)
1. a kind of lithium battery diaphragm polyethene microporous membrane, which is characterized in that the raw material including following parts by weight proportion: 25~
35g high density polyethylene (HDPE), 100mL atoleine, 1~2g antioxidant 1010, nano-silicon dioxide particle nucleating agent.
2. polyethene microporous membrane according to claim 1, which is characterized in that the nano-silicon dioxide particle nucleating agent
Average grain diameter is within the scope of 80~100nm.
3. a kind of preparation method of lithium battery diaphragm polyethene microporous membrane, which comprises the following steps:
(1) nano-silicon dioxide particle nucleating agent is prepared；
(2) by the nanometer of 25~35g high density polyethylene (HDPE), 100mL atoleine, 1~2g antioxidant 1010 and above-mentioned preparation
Silicon dioxide granule nucleating agent is added in the reactor equipped with agitating device, heating device and nitrogen protection device, in nitrogen
Protection, temperature are 170~200 DEG C, revolving speed is 2~3h of reaction under 600~800rpm, obtain homogeneous phase solution；
(3) after, the homogeneous phase solution of above-mentioned preparation is put into electric-heating die, temperature be 170~200 DEG C, pressure be 8~
Hot pressing forms under 12MPa, then sudden cold in 0 DEG C of distilled water, obtains membrane component；
(4) atoleine in membrane component is extracted using dehydrated alcohol, is placed in vacuum oven later, in vacuum
It spends 133Pa, be dried in vacuo 2~3h at 60~80 DEG C of temperature, and carry out 3~5min's using clamping mold is fixed at 100 DEG C
Lithium battery diaphragm polyethene microporous membrane is prepared in thermal finalization.
4. preparation method according to claim 3, which is characterized in that in the step (3), homogeneous phase solution is put into electric heating
In mold, in the case where temperature is 180 DEG C, pressure is 10MPa, hot pressing is formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910496736.5A CN110197884A (en) | 2019-06-10 | 2019-06-10 | A kind of lithium battery diaphragm polyethene microporous membrane and preparation method |
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| CN201910496736.5A CN110197884A (en) | 2019-06-10 | 2019-06-10 | A kind of lithium battery diaphragm polyethene microporous membrane and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242588A (en) * | 2020-08-14 | 2021-01-19 | 安徽德亚电池有限公司 | Preparation method of lithium battery ceramic composite membrane |
| US11976177B2 (en) | 2020-07-01 | 2024-05-07 | Celanese International Corporation | Polymer composition and membranes made therefrom with improved mechanical strength |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580571A (en) * | 2012-03-15 | 2012-07-18 | 上海交通大学 | Method for preparing ultra high molecular weight polyethylene micro-filtration membrane |
| CN103497475A (en) * | 2013-10-10 | 2014-01-08 | 成都思摩纳米技术有限公司 | Glass reinforced plastic and preparation method thereof |
| CN104119855A (en) * | 2014-06-30 | 2014-10-29 | 彩虹集团电子股份有限公司 | Surface modification method of aluminate yellow fluorescent powder for LED |
| CN104479487A (en) * | 2014-12-22 | 2015-04-01 | 广州中国科学院先进技术研究所 | Biological antibacterial and antifouling low surface energy coating with surface micro-structure and preparation method of biological antibacterial and antifouling low surface energy coating |
| CN104923167A (en) * | 2015-07-10 | 2015-09-23 | 山东大学 | Preparing method of stable nanometer SiO2/tributyl phosphate composite adsorbing material |
| CN106025156A (en) * | 2016-05-19 | 2016-10-12 | 河南师范大学 | Nano plasticized porous polyethylene dry-stretched film for lithium ion batteries and preparation method thereof |
-
2019
- 2019-06-10 CN CN201910496736.5A patent/CN110197884A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580571A (en) * | 2012-03-15 | 2012-07-18 | 上海交通大学 | Method for preparing ultra high molecular weight polyethylene micro-filtration membrane |
| CN103497475A (en) * | 2013-10-10 | 2014-01-08 | 成都思摩纳米技术有限公司 | Glass reinforced plastic and preparation method thereof |
| CN104119855A (en) * | 2014-06-30 | 2014-10-29 | 彩虹集团电子股份有限公司 | Surface modification method of aluminate yellow fluorescent powder for LED |
| CN104479487A (en) * | 2014-12-22 | 2015-04-01 | 广州中国科学院先进技术研究所 | Biological antibacterial and antifouling low surface energy coating with surface micro-structure and preparation method of biological antibacterial and antifouling low surface energy coating |
| CN104923167A (en) * | 2015-07-10 | 2015-09-23 | 山东大学 | Preparing method of stable nanometer SiO2/tributyl phosphate composite adsorbing material |
| CN106025156A (en) * | 2016-05-19 | 2016-10-12 | 河南师范大学 | Nano plasticized porous polyethylene dry-stretched film for lithium ion batteries and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 毛新欣: "锂离子电池新型隔膜材料的制备及其性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11976177B2 (en) | 2020-07-01 | 2024-05-07 | Celanese International Corporation | Polymer composition and membranes made therefrom with improved mechanical strength |
| CN112242588A (en) * | 2020-08-14 | 2021-01-19 | 安徽德亚电池有限公司 | Preparation method of lithium battery ceramic composite membrane |
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Application publication date: 20190903 |