CN109509862A - A kind of ceramic coated isolation film and preparation method thereof - Google Patents
A kind of ceramic coated isolation film and preparation method thereof Download PDFInfo
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- CN109509862A CN109509862A CN201811331460.7A CN201811331460A CN109509862A CN 109509862 A CN109509862 A CN 109509862A CN 201811331460 A CN201811331460 A CN 201811331460A CN 109509862 A CN109509862 A CN 109509862A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 103
- 238000002955 isolation Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 67
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 230000001186 cumulative effect Effects 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 229920005596 polymer binder Polymers 0.000 claims description 5
- 239000002491 polymer binding agent Substances 0.000 claims description 5
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical group [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 6
- 238000007561 laser diffraction method Methods 0.000 claims 2
- 239000002033 PVDF binder Substances 0.000 claims 1
- 239000001768 carboxy methyl cellulose Substances 0.000 claims 1
- 239000000839 emulsion Substances 0.000 claims 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 5
- 238000002050 diffraction method Methods 0.000 description 10
- 238000005524 ceramic coating Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 3
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- AQLLBJAXUCIJSR-UHFFFAOYSA-N OC(=O)C[Na] Chemical group OC(=O)C[Na] AQLLBJAXUCIJSR-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
-
- 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
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention discloses a kind of ceramic coated isolation film and preparation method thereof, including film base material is isolated, it is characterized by: the isolation film base material one side coating has ceramic layer, the ceramic layer is to be coated on isolation film base material to form by the slurry containing hybrid ceramic powder, stabilizer and adhesive, hybrid ceramic powder in the slurry, adhesive, stabilizer dosage be respectively as follows: 91-95 parts of hybrid ceramic powder in parts by weight, 4.5-6.5 parts of adhesive, 1.2-1.6 parts of stabilizer.Ceramic coated isolation film of the present invention is by improving ceramic slurry, and air permeability and internal resistance are smaller while so that ceramic isolation film is had good mechanical strength.
Description
Technical field
The present invention relates to technical field of lithium batteries more particularly to a kind of ceramic coated isolation film and preparation method thereof.
Background technique
Ceramic isolation film is the coated ceramic coating on isolation film, and ceramic coating is piled up by nano ceramic powder.
Technology is generally only with a kind of specified nanometer powder at present, so the size distribution of ceramic powders be also it is unique,
Under the premise of not changing formula, there are more gaps between ceramic particle, and the consistency of ceramic coating is lower, and mechanical strength is owed
It is good.Using two kinds of sizes ceramic powders when, behind the gap that small size ceramic filler is piled up into large-size ceramic, ceramic coating is caused
Density raising improves mechanical strength, but will lead to coating gap and become smaller and tail off, therefore the air permeability of coating increases, Jin Erying
Ring the internal resistance of lithium battery.Therefore, it is necessary to select the ceramic powders of appropriate particle size, and with the mixing of reasonable proportion.
Summary of the invention
In order to overcome the drawbacks of the prior art, the purpose of the present invention is to provide a kind of ceramic coated isolation films, improve pottery
Air permeability and internal resistance are smaller while porcelain coating mechanical strength.
Another object of the present invention is to provide a kind of preparation method of ceramic coated isolation film, the ceramic coated produced
Isolation film improves the security performance of lithium ion battery and good permeability, is not easy to generate heat.
To achieve the above object, the technical solution adopted in the present invention is as follows:
A kind of ceramic coated isolation film, including isolation film base material, the isolation film base material one side coating has ceramic layer, described
Ceramic layer is to be coated on isolation film base material to form by the slurry containing hybrid ceramic powder, stabilizer and adhesive, institute
State hybrid ceramic powder in slurry, adhesive, stabilizer dosage be respectively as follows: 91-95 parts of hybrid ceramic powder in parts by weight,
4.5-6.5 parts of adhesive, 1.2-1.6 parts of stabilizer；The hybrid ceramic powder is the size distribution based on laser diffractometry
When partial size D10 when medium particle diameter D50 is 0.65-0.7nm, cumulative volume 10% is 0.22-0.26nm, cumulative volume 90%
Partial size D90 is the nano-ceramic powder A of 2.3-2.35nm, and the medium particle diameter D50 of the size distribution based on laser diffractometry is
Partial size D90 when partial size D10 when 1.1-1.2nm, cumulative volume 10% is 0.4-0.45nm, cumulative volume 90% is 2.9-
The nano-ceramic powder B of 2.93nm is with any than mixing；Described adhesive is polymer binder, and the stabilizer is carboxymethyl
Sodium cellulosate.
As a kind of preferred scheme of the invention, the dosage of hybrid ceramic powder, adhesive, stabilizer in the slurry
Respectively 93 parts, 5 parts, 1.5 parts.
As a kind of preferred scheme of the invention, the medium particle diameter D50 of the nano-ceramic powder A is 0.69nm, tires out
Partial size D90 when partial size D10 when product volume 10% is 0.245nm, cumulative volume 90% is 2.318nm, the nano ceramics
When partial size D10 when the medium particle diameter D50 of powder B is 1.12nm, cumulative volume 10% is 0.432nm, cumulative volume 90%
Partial size D90 is 2.918nm.
As a kind of preferred scheme of the invention, nano-ceramic powder A and nano ceramics in the hybrid ceramic powder
The mass ratio of powder B is in the range of 2/8~9/1.
As a kind of preferred scheme of the invention, the polymer binder is poly- third that molecular weight is 30~1,200,000
Olefin(e) acid ester lotion or Kynoar.
A method of ceramic coated isolation film being prepared, its step are as follows:
1) hybrid ceramic powder configures: nano-ceramic powder A and nano-ceramic powder B being mixed, baking, sieving standby
With；
2) slurry preparation: according to the dosage of above-mentioned hybrid ceramic powder, adhesive, stabilizer, stabilizer is dissolved in water
And after stirring, the hybrid ceramic powder stirring being added adds adhesive, continues to be stirred to react；
3) be coated with: the baking oven of heating relief printing plate coating machine, each section of baking oven graduallys raise the temperature from front to back, and slurry is squeezed into material
The single side of isolation film base material is coated in slot, dry.
Preferably, the temperature of baking oven is 80-90 DEG C in step 1), baking time is 24-36 hours；Stirring in step 2)
Speed is 700-900r/min, and being stirred to react the time is 1.5-2h.
Preferably, the temperature range that baking oven is respectively held in step 3) is 45-50 DEG C.
Compared with prior art, the beneficial effects of the present invention are: ceramic coated isolation film of the present invention passes through to pottery
The transformation of porcelain slurry, the nano-ceramic powder A of small size are filled into the gap of large-sized nano-ceramic powder B, and ceramics apply
Layer consistency improves, and has good mechanical strength, while nano-ceramic powder A and nano-ceramic powder B are with reasonable quality
Than being equipped with, the air permeability increase of coating is less, will not influence the internal resistance of lithium battery, is not easy to generate heat in battery use process.
Specific embodiment
A kind of ceramic coated isolation film, including isolation film base material, the isolation film base material one side coating has ceramic layer, described
Ceramic layer is to be coated on isolation film base material to form by the slurry containing hybrid ceramic powder, stabilizer and adhesive, institute
State hybrid ceramic powder in slurry, adhesive, stabilizer dosage be respectively as follows: 91-95 parts of hybrid ceramic powder in parts by weight,
4.5-6.5 parts of adhesive, 1.2-1.6 parts of stabilizer；The hybrid ceramic powder is the size distribution based on laser diffractometry
When partial size D10 when medium particle diameter D50 is 0.65-0.7nm, cumulative volume 10% is 0.22-0.26nm, cumulative volume 90%
Partial size D90 is the nano-ceramic powder A of 2.3-2.35nm, and the medium particle diameter D50 of the size distribution based on laser diffractometry is
Partial size D90 when partial size D10 when 1.1-1.2nm, cumulative volume 10% is 0.4-0.45nm, cumulative volume 90% is 2.9-
The nano-ceramic powder B of 2.93nm is with any than mixing；Described adhesive is polymer binder, and the stabilizer is carboxymethyl
Sodium cellulosate.
It is the specific embodiment that the present invention prepares lithium ion battery pore-creating ceramics isolation film below.
Embodiment 1
A kind of ceramic coated isolation film, is to be prepared by the following method:
1) hybrid ceramic powder configures: by the medium particle diameter D50 of the size distribution based on laser diffractometry being 0.65nm, tired
Partial size D10 when product volume 10% is 0.22nm, nano-ceramic powder A that partial size D90 when cumulative volume 90% is 2.3nm and
Partial size D10 when the medium particle diameter D50 of size distribution based on laser diffractometry is 1.1nm, cumulative volume 10% be 0.4nm,
Partial size D90 when cumulative volume 90% is after the nano-ceramic powder B of 2.9nm is mixed with 2/8 mass ratio in 85 DEG C of oven
Middle baking 36h, sieving, obtained hybrid ceramic powder are spare；
2) slurry preparation: taking the carboxymethylcellulose sodium solution 100g of solid content 1.6%, add deionized water 300g, with
The revolving speed of 800r/min stirs 30min；Then the hybrid ceramic powder 95g of step 1) is added, is stirred with the revolving speed of 800r/min
3h；Polyacrylate dispersion 6.5g is added, 1.5~2h is stirred with the revolving speed of 800r/min；
3) be coated with: debugging machine, and the baking oven that heats up, the temperature that each section of coating machine control the baking oven within the scope of 45~50 DEG C
Each section graduallys raise the temperature from front to back；Slurry is squeezed into hopper, examination painting is carried out, thickness is carried out after drying and surface density is surveyed
Examination starts to be coated on slurry on isolation film base material after adjusting reaches requirement.
Embodiment 2
A kind of ceramic coated isolation film, is to be prepared by the following method:
1) hybrid ceramic powder configures: by the medium particle diameter D50 of the size distribution based on laser diffractometry being 0.7nm, tired
The nano-ceramic powder A that partial size D90 when partial size D10 when product volume 10% is 0.26nm, cumulative volume 90% is 2.35nm
Partial size D10 when medium particle diameter D50 with the size distribution based on laser diffractometry is 1.2nm, cumulative volume 10% is
Partial size D90 when 0.45nm, cumulative volume 90% is after the nano-ceramic powder B of 2.93nm is mixed with 9/1 mass ratio in 85
DEG C oven for baking for 24 hours, sieving, obtained hybrid ceramic powder is spare；
2) slurry preparation: taking the carboxymethylcellulose sodium solution 75g of solid content 1.6%, is stirred with the revolving speed of 800r/min
30min；Then the hybrid ceramic powder 91g of step 1) is added, 3h is stirred with the revolving speed of 800r/min；Kynoar is added
4.5g stirs 1.5~2h with the revolving speed of 800r/min；
3) be coated with: debugging machine, and the baking oven that heats up, the temperature that each section of coating machine control the baking oven within the scope of 45~50 DEG C
Each section graduallys raise the temperature from front to back；Slurry is squeezed into hopper, examination painting is carried out, thickness is carried out after drying and surface density is surveyed
Examination starts to be coated on slurry on isolation film base material after adjusting reaches requirement.
Embodiment 3
A kind of ceramic coated isolation film, is to be prepared by the following method:
1) hybrid ceramic powder configures: by the medium particle diameter D50 of the size distribution based on laser diffractometry being 0.69nm, tired
The nano-ceramic powder that partial size D90 when partial size D10 when product volume 10% is 0.245nm, cumulative volume 90% is 2.318nm
Partial size D10 when the A and medium particle diameter D50 of the size distribution based on laser diffractometry is 1.12nm, cumulative volume 10% is
Partial size D90 when 0.432nm, cumulative volume 90% be the nano-ceramic powder B of 2.918nm with after 7/3 mass ratio mixing in
85 DEG C of oven for baking 30h, sieving, obtained hybrid ceramic powder are spare；
2) slurry preparation: the carboxymethylcellulose sodium solution 93.75g of solid content 1.6% is taken, is stirred with the revolving speed of 800r/min
Mix 30min；Then the hybrid ceramic powder 93g of step 1) is added, 3h is stirred with the revolving speed of 800r/min；Kynoar is added
5g stirs 1.5~2h with the revolving speed of 800r/min；
3) be coated with: debugging machine, and the baking oven that heats up, the temperature that each section of coating machine control the baking oven within the scope of 45~50 DEG C
Each section graduallys raise the temperature from front to back；Slurry is squeezed into hopper, examination painting is carried out, thickness is carried out after drying and surface density is surveyed
Examination starts to be coated on slurry on isolation film base material after adjusting reaches requirement.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331460.7A CN109509862A (en) | 2018-11-09 | 2018-11-09 | A kind of ceramic coated isolation film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331460.7A CN109509862A (en) | 2018-11-09 | 2018-11-09 | A kind of ceramic coated isolation film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109509862A true CN109509862A (en) | 2019-03-22 |
Family
ID=65748010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811331460.7A Pending CN109509862A (en) | 2018-11-09 | 2018-11-09 | A kind of ceramic coated isolation film and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331643A (en) * | 2006-07-19 | 2008-12-24 | 松下电器产业株式会社 | Lithium-ion secondary battery |
| EP2648249A1 (en) * | 2012-04-06 | 2013-10-09 | Samsung SDI Co., Ltd. | Negative active material, lithium battery including the material, and method for manufacturing the material |
| CN104064707A (en) * | 2014-06-09 | 2014-09-24 | 东莞市魔方新能源科技有限公司 | Inorganic/organic composite membrane, preparation method of inorganic/organic composite membrane and lithium ion secondary battery containing membrane |
| CN103199209B (en) * | 2013-04-01 | 2015-09-02 | 中国海诚工程科技股份有限公司 | There is lithium ion battery nonwoven fabrics ceramic diaphragm and the technique of excellent closed pore performance |
| CN107895765A (en) * | 2017-10-13 | 2018-04-10 | 深圳市旭然电子有限公司 | Inorganic/organic composite porous barrier film, preparation method and its lithium ion battery |
-
2018
- 2018-11-09 CN CN201811331460.7A patent/CN109509862A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331643A (en) * | 2006-07-19 | 2008-12-24 | 松下电器产业株式会社 | Lithium-ion secondary battery |
| EP2648249A1 (en) * | 2012-04-06 | 2013-10-09 | Samsung SDI Co., Ltd. | Negative active material, lithium battery including the material, and method for manufacturing the material |
| CN103199209B (en) * | 2013-04-01 | 2015-09-02 | 中国海诚工程科技股份有限公司 | There is lithium ion battery nonwoven fabrics ceramic diaphragm and the technique of excellent closed pore performance |
| CN104064707A (en) * | 2014-06-09 | 2014-09-24 | 东莞市魔方新能源科技有限公司 | Inorganic/organic composite membrane, preparation method of inorganic/organic composite membrane and lithium ion secondary battery containing membrane |
| CN107895765A (en) * | 2017-10-13 | 2018-04-10 | 深圳市旭然电子有限公司 | Inorganic/organic composite porous barrier film, preparation method and its lithium ion battery |
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Application publication date: 20190322 |
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