CN110492106A - A kind of three-dimensional porous substrate and its application in dry coating technique - Google Patents
A kind of three-dimensional porous substrate and its application in dry coating technique Download PDFInfo
- Publication number
- CN110492106A CN110492106A CN201810460591.9A CN201810460591A CN110492106A CN 110492106 A CN110492106 A CN 110492106A CN 201810460591 A CN201810460591 A CN 201810460591A CN 110492106 A CN110492106 A CN 110492106A
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- Prior art keywords
- dimensional porous
- porous substrate
- substrate
- micropore
- several
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
A kind of three-dimensional porous substrate and its application in dry coating technique, it is related to the technical field of producing of lithium ion battery；It includes substrate, Filamentous aluminum metal, micropore；Several staggered Filamentous aluminum metals and several uniform micropores, and mutual connection between several micropores are inlaid in the substrate.A kind of three-dimensional porous substrate of the present invention and its application in dry coating technique, active material is not needed that slurry is made, does not need that pole piece can be prepared in the case where being dissolved using NMP, security risk is reduced while manufacturing cost can be reduced, the present invention has many advantages, such as that structure is simple, setting is reasonable, low manufacture cost.
Description
Technical field
The present invention relates to the technical field of producing of lithium ion battery, and in particular to a kind of three-dimensional porous substrate and its
Application in dry coating technique.
Background technique
Currently, the production method of the active material synusia of EV power lithium-ion battery mainly use NMP dissolve PVDF as
Binder is sufficiently stirred and slurry is made and coated on forming on metallic film.
It is known that NMP only acts on flux in the battery and do not work, and NMP has combustibility, gives dried coating film
Security risk is brought, while a series of process equipment of evaporation recycling of NMP bring increases great amount of cost.
So develop it is a kind of had a very important significance without the use of the dry coating technique of NMP, manufacture can be reduced
Security risk is reduced while cost.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide one kind do not need using NMP dissolve can
The three-dimensional porous substrate of security risk and its answering in dry coating technique are reduced while preparing pole piece, reduce manufacturing cost
With.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of three-dimensional porous substrate, it include substrate, silk
Shape aluminum metal, micropore；Several staggered Filamentous aluminum metals and several uniform micropores are inlaid in the substrate, and if
Mutual connection between dry micropore.
A kind of application of three-dimensional porous substrate in dry coating technique, it includes that step is implemented as follows:
It 1, include but is not limited to LiFePO4, LiMn2O4, sour lithium, tri- element material of NCA.NCM and conduction by active material
Agent includes conductive black etc. and binder PVDF sufficiently dry-mixed uniform, and uniform mixed powder is made；
2, in the micropore 3 that mixed powder described in step 1 is pushed away to the three-dimensional porous substrate of actual arrival；
3, the porous material that above-mentioned steps 2 are embedded in mixed powder is placed in rolling in hot-rolling, and controls thickness, that is, be made
Corresponding pole piece.
Further, the substrate is foamed aluminium or other conductive foam metals.
Further, mutual connection between several micropores, can greatly improve the surface area of substrate, while substrate
It can be come into full contact with active material.
Further, several micropores, which can hide, receives powder activated material, by powder activated material with
PVDF binder sufficiently it is dry-mixed after, uniformly push away in actual arrival micropore.
Further, after dry-mixed uniform powder activated material is pushed away in actual arrival micropore, it is added with hot-rolling
After heat, temperature is controlled between 90~200 DEG C, and pressure value is controlled in 0.5~1.5MPQ, using binder PVDF in high pressure and height
Temperature is lower, and there is cohesive force to be prepared into pole piece.
The present invention is the beneficial effects are as follows: a kind of three-dimensional porous substrate of the present invention and its in dry coating technique
In application, active material do not needed that slurry is made, do not need that pole piece can be prepared in the case where being dissolved using NMP, can dropped
Security risk is reduced while low manufacturing cost, the present invention has many advantages, such as that structure is simple, setting is reasonable, low manufacture cost.
Detailed description of the invention
Fig. 1 is a kind of structure chart of three-dimensional porous substrate of the present invention；
Fig. 2 is pole piece schematic diagram made of a kind of three-dimensional porous substrate of the present invention.
Description of symbols:
Substrate 1, Filamentous aluminum metal 2, micropore 3, mixed powder 4.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Referring to as shown in Figure 1, present embodiment adopts the following technical scheme that a kind of three-dimensional porous substrate, it includes
Substrate 1, Filamentous aluminum metal 2, micropore 3；Be inlaid in the substrate 1 several staggered Filamentous aluminum metals 2 and it is several uniformly
Micropore 3, and mutual connection between several micropores 3.
Referring to as shown in Fig. 2, a kind of application of three-dimensional porous substrate in dry coating technique, it includes that step is implemented as follows
It is rapid:
It 1, include but is not limited to LiFePO4, LiMn2O4, sour lithium, tri- element material of NCA.NCM and conduction by active material
Agent includes conductive black etc. and binder PVDF sufficiently dry-mixed uniform, and uniform mixed powder 4 is made；
2, in the micropore 3 that mixed powder 4 described in step 1 is pushed away to the three-dimensional porous substrate of actual arrival；
3, the porous material that above-mentioned steps 2 are embedded in mixed powder 4 is placed in rolling in hot-rolling, and controls thickness, that is, made
At corresponding pole piece.
Further, the substrate 1 is foamed aluminium or other conductive foam metals.
Further, mutual connection between several micropores 3, can greatly improve the surface area of substrate, while base
Material can come into full contact with active material.
Further, several micropores 3, which can hide, receives powder activated material, by powder activated material with
PVDF binder sufficiently it is dry-mixed after, uniformly push away in actual arrival micropore.
Further, after dry-mixed uniform powder activated material is pushed away in actual arrival micropore, it is added with hot-rolling
After heat, temperature is controlled between 90~200 DEG C, and pressure value is controlled in 0.5~1.5MPQ, using binder PVDF in high pressure and height
Temperature is lower, and there is cohesive force to be prepared into pole piece.
Present embodiment the beneficial effects are as follows: a kind of three-dimensional porous substrate described in present embodiment and
It is not in the case where the application active material in dry coating technique needs that slurry is made, does not need to dissolve using NMP
Pole piece is prepared, security risk is reduced while manufacturing cost can be reduced, present embodiment is simple with structure, setting is closed
The advantages that reason, low manufacture cost.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (6)
1. a kind of three-dimensional porous substrate, it is characterised in that: it includes substrate, Filamentous aluminum metal, micropore；Edge in the substrate
Embedded with several staggered Filamentous aluminum metals and several uniform micropores, and mutual connection between several micropores.
2. a kind of application of three-dimensional porous substrate in dry coating technique, it is characterised in that it includes that step is implemented as follows:
It (1), include but is not limited to LiFePO4, LiMn2O4, sour lithium, tri- element material of NCA.NCM and conductive agent by active material
Including conductive black etc. and binder PVDF is sufficiently dry-mixed uniform, and uniform mixed powder is made；
(2), in the micropore 3 that mixed powder described in step (1) is pushed away to the three-dimensional porous substrate of actual arrival；
(3), the porous material that above-mentioned steps (2) are embedded in mixed powder is placed in rolling in hot-rolling, and controls thickness, that is, be made
Corresponding pole piece.
3. a kind of three-dimensional porous substrate according to claim 1, it is characterised in that: the substrate is foamed aluminium or other
Conductive foam metal.
4. a kind of three-dimensional porous substrate according to claim 1, it is characterised in that: mutually interconnected between several micropores
It is logical, the surface area of substrate can be greatlyd improve, while substrate can come into full contact with active material.
5. a kind of three-dimensional porous substrate according to claim 1, it is characterised in that: several micropores being capable of Zang Na
Powder activated material, by powder activated material and PVDF binder it is sufficiently dry-mixed after, uniformly push away in actual arrival micropore.
6. a kind of application of the three-dimensional porous substrate according to claim 2 in dry coating technique, it is characterised in that: dry
After mixed uniform powder activated material is pushed away in actual arrival micropore, after being heated with hot-rolling to it, temperature control 90~
Between 200 DEG C, pressure value is controlled in 0.5~1.5MPQ, has cohesive force preparation at elevated pressures and temperatures using binder PVDF
At pole piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460591.9A CN110492106A (en) | 2018-05-15 | 2018-05-15 | A kind of three-dimensional porous substrate and its application in dry coating technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460591.9A CN110492106A (en) | 2018-05-15 | 2018-05-15 | A kind of three-dimensional porous substrate and its application in dry coating technique |
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| CN110492106A true CN110492106A (en) | 2019-11-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333608A (en) * | 2008-05-30 | 2008-12-31 | 中国科学院固体物理研究所 | Method for preparing through-hole foamed metal of high factor of porosity |
| CN102332561A (en) * | 2011-09-21 | 2012-01-25 | 东莞新能源科技有限公司 | Manufacturing method for lithium ion battery pole piece |
| CN102694149A (en) * | 2012-06-07 | 2012-09-26 | 广东工业大学 | Manufacturing equipment and manufacturing method for electrode of power type lithium ion battery |
| CN105070879A (en) * | 2015-07-30 | 2015-11-18 | 河北中智电池制造有限公司 | Technology and equipment for manufacturing energy-saving and environment-friendly lithium battery pole piece |
| CN107681115A (en) * | 2016-08-01 | 2018-02-09 | 北京好风光储能技术有限公司 | A kind of negative plate of lithium slurry battery |
-
2018
- 2018-05-15 CN CN201810460591.9A patent/CN110492106A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333608A (en) * | 2008-05-30 | 2008-12-31 | 中国科学院固体物理研究所 | Method for preparing through-hole foamed metal of high factor of porosity |
| CN102332561A (en) * | 2011-09-21 | 2012-01-25 | 东莞新能源科技有限公司 | Manufacturing method for lithium ion battery pole piece |
| CN102694149A (en) * | 2012-06-07 | 2012-09-26 | 广东工业大学 | Manufacturing equipment and manufacturing method for electrode of power type lithium ion battery |
| CN105070879A (en) * | 2015-07-30 | 2015-11-18 | 河北中智电池制造有限公司 | Technology and equipment for manufacturing energy-saving and environment-friendly lithium battery pole piece |
| CN107681115A (en) * | 2016-08-01 | 2018-02-09 | 北京好风光储能技术有限公司 | A kind of negative plate of lithium slurry battery |
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Application publication date: 20191122 |
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