CN107017383A - It is a kind of to be applied to battery, the three-dimensional porous aluminium foil processing method of energy-storage battery plus plate current-collecting body - Google Patents
It is a kind of to be applied to battery, the three-dimensional porous aluminium foil processing method of energy-storage battery plus plate current-collecting body Download PDFInfo
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- CN107017383A CN107017383A CN201710203882.5A CN201710203882A CN107017383A CN 107017383 A CN107017383 A CN 107017383A CN 201710203882 A CN201710203882 A CN 201710203882A CN 107017383 A CN107017383 A CN 107017383A
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- aluminium foil
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- collecting body
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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
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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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
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/044—Activating, forming or electrochemical attack of the supporting 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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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
- H01M4/64—Carriers or collectors
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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
Abstract
The invention discloses the three-dimensional porous aluminium foil processing method of a kind of application battery, energy-storage battery plus plate current-collecting body, belong to new material technology field.The processing method comprises the following steps：Rolling aluminum foil is handled through overactivation, the electrochemical corrosion of macro burn into, chemical enlargement, flushing, drying, embossing, winding.Electrolyte solvent uses RO membrane reverse osmosis water, DI water conductivities 18.25us/cm.Cylinder is presented by a kind of three-dimensional porous aluminium foil applied to battery, energy-storage battery plus plate current-collecting body produced by the invention, is evenly distributed, thickness evenness deviation is less than 0.12um, tensile strength 15kg/mm2, light transmittance 15%.
Description
Technical field
The present invention relates to a kind of three-dimensional porous aluminium foil processing method applied to battery, energy-storage battery plus plate current-collecting body.
Background technology
No matter it is well known that 3C number class batteries or new-energy automobile power battery, to specific energy and charge-discharge magnification
The requirement more and more higher of performance.In newest public subsidies policy provide, pure electric coach system energy density be more than 95 watt-hours/
kg.The approach for lifting lithium ion battery specific energy is the positive and negative pole material using higher capacity nothing but, the thinner diaphragm paper of thickness,
The thinner aluminium foil of thickness, reduces other ancillary additions as far as possible.
Present new-energy automobile demand is increasing, popular more and more obvious to its power performance demand, so as to develop
With improve specific energy, high magnification, low internal resistance, electrolyte wetability uniformity three-dimensional porous aluminium foil, the three-dimensional porous aluminium foil is main
If to meet 1, directly effectively lifting lithium battery specific energy, 2, effectively lifting lithium battery high rate performance 3, effectively reduce lithium battery
Wetting efficiency after internal resistance 4, lithium battery electrolytes injection can be lifted significantly, and energy 100% ensures infiltration uniformity 5, improved
The surface adhesion of foil, passes through interpore material, formation " work " font occlusion of both positive and negative polarity pole piece coating tow sides material
State, the probability that pole piece comes off can be greatly lowered.6th, the bending pliability of pole piece is lifted, answering for flexible battery is more suitable for
With.Market development has a extensive future.
The content of the invention
Add it is an object of the invention to provide a kind of three-dimensional porous aluminium foil applied to battery, energy-storage battery plus plate current-collecting body
Work method.
Three-dimensional porous electrolytic aluminum foil produced by the invention is that used following technical scheme is realized：By rolling aluminum foil through making a living
Change, the electrochemical corrosion of macro burn into, chemical enlargement, flushing, drying, embossing, winding processing, electrolyte solvent use RO films
Reverse osmosis water, DI water conductivity 18.25us/cm, emulsification treatment is handled using tannic acid, and tannin acid content is 15-20%,
30 degree of temperature, macro corrosion treatment uses sulfuric acid-hydrochloric acid system, sulfuric acid mass fraction 35%-40%, hydrochloric acid mass fraction 10%-
15%, 20 degree of temperature normal temperature, electrochemical corrosion processing is using progress direct current energization, current density 0.1-0.15A/ on aluminium foil
Cm2, solution is carried out using inorganic phosphate or electrodeless phosphate in electrolysis of hydrochloric acid liquid, inorganic phosphate or inorganic phosphate quality
Fraction 1%-2%, hydrochloric acid mass component 5%-8%, solution temperature 60-70 degree, chemical enlargement processing use hydrochloric acid-hydrogen peroxide system,
Hydrochloric acid quality 30%-40%, hydrogen peroxide uses 10%-15%, fluid temperature 30-35 degree.Cleaning treatment is carried out using 2 cun of atomizers
Rinse, flushing pressure 0.6MPA, water uses DI water, drying and processing is dried using two layers up and down, and fluorescent tube is added using carbon fiber
Heat pipe is dried, and embossing processing is made patterned fashion using machine driving on live-roller and aluminium foil is surface-treated
Reach that two sides roughness is uniform.
In the emulsification treatment, it is 18% solution, temperature 30 that tannin acid content is added in the electrolyte of 1000ml parts by volume
Degree.
In the macro corrosion treatment, sulfuric acid mass fraction 37%, hydrochloric acid are added in the electrolyte of 1000ml parts by volume
Mass fraction 13%, 20 degree of temperature normal temperature.
In the electrochemical corrosion processing, inorganic phosphate or inorganic phosphate are added in the electrolyte of 1000ml parts by volume
Salt mass fraction 1%, hydrochloric acid mass fraction 6%, solution temperature 60-70 degree.
The chemical enlargement processing solution, adds hydrochloric acid quality 35%, dioxygen hydromining in the electrolyte of 1000ml parts by volume
With 15%, fluid temperature 30-35 degree.
The carbon fiber heating tube in drying and processing uses power 1KW.
It is described to be embossed in embossing processing using deflector roll.
It is real in the three-dimensional porous aluminium foil processing technology of battery, energy-storage battery plus plate current-collecting body producing three-dimensional porous aluminium foil
In border, it is found that the size of tannin acid concentration directly influences the activity of compact aluminum oxide on aluminium foil, such as table 1.
Influence of the various concentrations tannic acid of table 1 to rolling aluminum foil dense oxide aluminium foil
| Tannin acid concentration（%） | Aluminum foil thickness（um） | Aluminum oxide activating % |
| 0 | 15 | 100 |
| 10 | 15 | 90 |
| 15 | 15 | 50 |
| 25 | 15 | 50 |
Found by table 1, the tannic acid of various concentrations has good reactivity to aluminium foil, have very big to three-dimensional porous aluminium foil technique
Influence, it is demonstrated experimentally that wherein processing winding winding and opening of the tannic acid of 15% concentration to three-dimensional porous aluminium foil reaches most
It is good.
In process of production, three-dimensional porous aluminium foil adds in the three-dimensional porous aluminium foil of battery, energy-storage battery plus plate current-collecting body
Work technique finds that the proportioning of various concentrations sulfuric acid and hydrochloric acid, which is directly influenced, produces the light of fine and close etch pit on aluminium foil in practice
Weight, such as table 2.
The various concentrations sulfuric acid of table 2 matches somebody with somebody the influence for comparing the generation of microcorrosion hole with hydrochloric acid
| Sulfuric acid（37%） | Hydrochloric acid（13%） | Aluminum foil thickness（um） | Aluminium foil layer etch pit situation |
| 0 | 10 | 15 | Aluminium foil top layer is largely corroded, and occurs aperture once in a while |
| 10 | 0 | 15 | Aluminium foil top layer reacts |
| 20 | 10 | 15 | The uneven etch pit of aluminium foil top layer size |
| 30 | 10 | 15 | There is uniform etch pit, but hole size heterogeneity in aluminium foil top layer |
| 40 | 10 | 15 | There is uniform etch pit in aluminium foil top layer, but hole size is homogeneous |
| 50 | 10 | 15 | There is corrosion phenomenon in aluminium foil top layer |
| 40 | 15 | 15 | It is serious that etch pit occurs in aluminium foil top layer |
Analyzed by table 2, when the proportioning of sulfuric acid and hydrochloric acid is 4:When 1, the microcorrosion hole on aluminium foil top layer is minimum.
In process of production, three-dimensional porous aluminium foil adds in the three-dimensional porous aluminium foil of battery, energy-storage battery plus plate current-collecting body
Work technique in practice, is found many in inorganic phosphate-hydrochloric acid system concentration three-dimensional fine and close to the generation of direct current density on aluminium foil
There are much relations, such as table 3 in hole.
The influence of 3 inorganic phosphates of table-hydrochloric acid and current density to portalling
| Inorganic phosphate（%） | Hydrochloric acid（%） | Current density（A/cm2） | Aluminium foil surface corrosion condition is contrasted |
| 0 | 2 | 0.15 | Aluminium foil reaction rate is excessively slow, and by slight erosion |
| 0 | 4 | 0.15 | Aluminium foil reflection speed is uneven, there is corrosion phenomenon |
| 0 | 6 | 0.15 | Aluminium foil reaction rate is uniform, there is corrosion phenomenon |
| 0 | 8 | 0.15 | It is obvious that top layer corrosion occurs in aluminium foil |
| 0 | 10 | 0.15 | Aluminium foil corrosion is serious |
| 0.5 | 6 | 0.15 | Aluminium foil has corrosion phenomenon, and top layer is unprotected good |
| 1 | 6 | 0.15 | There is uniform bore in aluminium foil |
| 1.5 | 6 | 0.15 | Aluminium foil is had individually without loophole |
| 2 | 6 | 0.15 | There is the hole of many non-printing opacities in aluminium foil |
| 1 | 6 | 0.05 | Aluminium foil portals reaction slowly |
| 1 | 6 | 0.1 | There is hole heterogeneity in aluminium foil |
| 1 | 6 | 0.15 | There is even compact loophole |
| 1 | 6 | 0.2 | There is top layer seriously corroded in aluminium foil |
Pass through table 3, it has been found that inorganic phosphate 1%, hydrochloric acid 6%, current density 0.15A/cm2 may occur in which fine and close homogeneous visible
Loophole.Wherein inorganic phosphate can be analysis pure phosphoric acid, sodium polyphosphate, ammonium dihydrogen phosphate etc. it is above-mentioned a kind of or it is a kind of with
On.
In process of production, three-dimensional porous aluminium foil adds in the three-dimensional porous aluminium foil of battery, energy-storage battery plus plate current-collecting body
Work technique in practice, it is found that producing fine and close three-dimensional porous reaming to aluminium foil in hydrogen peroxide-hydrochloric acid system concentration has very great help
Relation, such as table 4.
The hydrogen peroxide of table 4 and relation of the concentration of hydrochloric acid to micropore reaming
| Hydrogen peroxide concentration（%） | Concentration of hydrochloric acid（%） | Aluminium foil translucency |
| 10 | 35 | Hole expands heterogeneity, poor |
| 15 | 35 | Hole expands uniform, good |
| 20 | 35 | Hole expands heterogeneity, poor |
| 15 | 25 | Hole heterogeneity |
| 15 | 40 | Hole has not of uniform size |
| 15 | 45 | Aluminium foil has corrosion phenomenon |
Found by table 4, hydrogen peroxide has certain help, preferably hydrogen peroxide concentration 15%, concentration of hydrochloric acid to reaming with concentration of hydrochloric acid
35%, the reaming for occurring micropore to aluminium foil reaches hole size 20um, and porosity reaches 15%, and this homogeneous micropore, which is conducive to improving, to be stored
The performance of battery, energy-storage battery plus plate current-collecting body.
Implementing light transmittance measurement above is measured by following technological means, using the DR81 light transmittances of domestic manufacturer production
Instrument carries out online record data and drawn.
Three-dimensional porous aluminium foil must also be ensured that its lower internal resistance in battery, energy-storage battery plus plate current-collecting body, because
Battery, the internal resistance of energy-storage battery plus plate current-collecting body include material internal resistance itself, contact internal resistance, positive electrode internal resistance.In material
In the case that resistance, positive electrode internal resistance are constant, only reduction contact internal resistance improves positive electrode and three-dimensional porous aluminium foil two sides is thick
Rugosity internal resistance, we employ mechanical gimmick：Embossing is handled.It is main to go out uniformly to be embossed come after to drying using laser engraving
Three-dimensional porous aluminium foil carries out machine printed processing, to reach that the three-dimensional porous surface roughness of aluminium foil two is homogeneous.
Beneficial effects of the present invention：By produced by the invention three-dimensional many applied to battery, energy-storage battery plus plate current-collecting body
Hole aluminium foil, the three-dimensional porous electrolytic aluminum foil institutional framework is presented cylindric, is evenly distributed, thickness evenness deviation is less than
0.12um, tensile strength 15kg/mm2, light transmittance 15%.
Brief description of the drawings
Fig. 1 is treatment trough flow chart.
Fig. 2 is the shape of three-dimensional porous aluminium foil enlarged opening, size scanning electron microscope (SEM) photograph
Embodiment
Three-dimensional porous aluminium foil is handled using Synchronous Transmission treatment trough, PROCESS FOR TREATMENT scheme：Using unreeling, activate,
The electrochemical corrosion of macro burn into, chemical enlargement, flushing, drying, embossing processing, wherein nine parts of winding, treatment trough point 5
Chemical tank.Electrolyte solvent uses liquid in RO membrane reverse osmosis water, DI water conductivity 18.25us/cm, activated bath to use tannic acid
Handled, tannin acid content is 15-20%, 30 degree of temperature；Micro- chemical corrosion groove chemical liquids use sulfuric acid-hydrochloric acid system, sulfuric acid
Mass fraction 35%-40%, hydrochloric acid mass fraction 10%-15%, 20 degree of temperature normal temperature；Electrochemical corrosion groove is used to be carried out on aluminium foil
Direct current is powered, current density 0.1-0.15A/cm2, and solution is entered using inorganic phosphate or electrodeless phosphate in electrolysis of hydrochloric acid liquid
OK, inorganic phosphate or inorganic phosphate mass fraction 1%-2%, hydrochloric acid mass component 5%-8%, solution temperature 60-70 degree；Chemistry
Reaming groove uses hydrochloric acid-hydrogen peroxide system, and hydrochloric acid quality 30%-40%, hydrogen peroxide uses 10%-15%, fluid temperature 30-35 degree.；
Rinse bath is rinsed using 2 cun of atomizers, flushing pressure 0.6MPA, and water uses DI water；Drying is using two layers of progress up and down
Drying, fluorescent tube is dried using carbon fiber heating tube；Embossing processing makes patterned fashion using machine driving on live-roller
Progress is surface-treated to aluminium foil has reached the uniform three-dimensional porous aluminium foil of two sides roughness.
The three-dimensional porous aluminium foil handled by the embossing, is successfully applied to actual production process and produces ternary high magnification,
High power capacity, the battery core of low internal resistance.It is embossed the influence data such as table 5 of the three-dimensional porous aluminium foil, conventional aluminium foil of processing to battery core：
The ternary material battery core examining report of table 5
Note：This data provides for certain domestic large-scale battery core factory.
Cylinder is presented in the three-dimensional porous aluminium foil, is evenly distributed, and thickness evenness deviation is less than 0.12um, tensile strength
15kg/mm2, light transmittance 15%.Lithium battery specific energy directly can be effectively lifted especially in battery, energy-storage battery, effectively carried
Rising the wetting efficiency after lithium battery high rate performance, the effectively internal resistance of reduction lithium battery, lithium battery electrolytes injection can significantly be lifted,
And energy 100% ensures to infiltrate uniformity, improves the surface adhesion of foil, passes through interpore material, both positive and negative polarity pole piece coating
Tow sides material formation " work " font interlocking pattern, the probability that pole piece comes off can be greatly lowered, and the bending for lifting pole piece is soft
Softness, is more suitable for the application of flexible battery, and market development has a extensive future.
Claims (8)
1. a kind of be applied to battery, the three-dimensional porous aluminium foil processing method of energy-storage battery plus plate current-collecting body, it is characterised in that bag
Include following steps：By rolling aluminum foil through overactivation, the electrochemical corrosion of macro burn into, chemical enlargement, flushing, drying, embossing,
Winding is handled, and electrolyte solvent uses RO membrane reverse osmosis water, and DI water conductivity 18.25us/cm, emulsification treatment is entered using tannic acid
Row processing, tannin acid content is 15-20%, and 30 degree of temperature, macro corrosion treatment uses sulfuric acid-hydrochloric acid system, sulfuric acid quality point
Several 35%-40%, hydrochloric acid mass fraction 10%-15%, 20 degree of temperature normal temperature, electrochemical corrosion processing is used carries out direct current on aluminium foil
It is powered, current density 0.1-0.15A/cm2, solution is carried out using inorganic phosphate or electrodeless phosphate in electrolysis of hydrochloric acid liquid, nothing
Machine phosphoric acid or inorganic phosphate mass fraction 1%-2%, hydrochloric acid mass component 5%-8%, solution temperature 60-70 degree, chemical enlargement
Processing uses hydrochloric acid-hydrogen peroxide system, and hydrochloric acid quality 30%-40%, hydrogen peroxide uses 10%-15%, fluid temperature 30-35 degree, clearly
Wash processing to be rinsed using 2 cun of atomizers, flushing pressure 0.6MPA, water uses DI water, and drying and processing is using two layers up and down
Dried, fluorescent tube is dried using carbon fiber heating tube, embossing processing makes embossing using machine driving on live-roller
Mode, which aluminium foil is surface-treated, has reached that two sides roughness is uniform.
2. a kind of battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body of being applied to according to claim 1 adds
Work method, it is characterised in that in the emulsification treatment, it is 18% molten that tannin acid content is added in the electrolyte of 1000ml parts by volume
Liquid, 30 degree of temperature.
3. a kind of battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body of being applied to according to claim 1 adds
Work method, it is characterised in that in the macro corrosion treatment, adds sulfuric acid quality point in the electrolyte of 1000ml parts by volume
Number 37%, hydrochloric acid mass fraction 13%, 20 degree of temperature normal temperature.
4. a kind of battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body of being applied to according to claim 1 adds
Work method, it is characterised in that in electrochemical corrosion processing, added in the electrolyte of 1000ml parts by volume inorganic phosphate or
Person's inorganic phosphate mass fraction 1%, hydrochloric acid mass fraction 6%, solution temperature 60-70 degree.
5. a kind of battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body of being applied to according to claim 1 adds
Work method, it is characterised in that the chemical enlargement processing solution, adds hydrochloric acid quality in the electrolyte of 1000ml parts by volume
35%, hydrogen peroxide uses 12%, fluid temperature 30-35 degree.
6. a kind of battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body of being applied to according to claim 1 adds
Work method, it is characterised in that the carbon fiber heating tube in drying and processing uses power 1KW.
7. a kind of battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body of being applied to according to claim 1 adds
Work method, it is characterised in that described to be embossed in embossing processing using deflector roll.
8. it is a kind of applied to battery, the three-dimensional porous aluminium foil of energy-storage battery plus plate current-collecting body according to claim 1 or 3
Processing method, it is characterised in that in the macro corrosion treatment, the proportioning of sulfuric acid and hydrochloric acid is 4:1.
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| CN107017383A true CN107017383A (en) | 2017-08-04 |
| CN107017383B CN107017383B (en) | 2019-11-15 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107546392A (en) * | 2017-09-05 | 2018-01-05 | 北京嘉倍通科技有限公司 | A kind of preparation technology of slim pole plate printing-type microporous substrate |
| CN107768684A (en) * | 2017-10-09 | 2018-03-06 | 山西沃特海默新材料科技股份有限公司 | A kind of lithium battery anode and its preparation method and application |
| CN107768144A (en) * | 2017-10-09 | 2018-03-06 | 山西沃特海默新材料科技股份有限公司 | A kind of micropore metal material and its preparation method and application |
| CN107768683A (en) * | 2017-10-09 | 2018-03-06 | 山西沃特海默新材料科技股份有限公司 | A kind of high-performance lithium battery plus plate current-collecting body and its preparation method and application |
| CN108172754A (en) * | 2018-01-09 | 2018-06-15 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108172755A (en) * | 2018-01-09 | 2018-06-15 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108232201A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
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|---|---|---|---|---|
| CN107546392A (en) * | 2017-09-05 | 2018-01-05 | 北京嘉倍通科技有限公司 | A kind of preparation technology of slim pole plate printing-type microporous substrate |
| CN107768684A (en) * | 2017-10-09 | 2018-03-06 | 山西沃特海默新材料科技股份有限公司 | A kind of lithium battery anode and its preparation method and application |
| CN107768144A (en) * | 2017-10-09 | 2018-03-06 | 山西沃特海默新材料科技股份有限公司 | A kind of micropore metal material and its preparation method and application |
| CN107768683A (en) * | 2017-10-09 | 2018-03-06 | 山西沃特海默新材料科技股份有限公司 | A kind of high-performance lithium battery plus plate current-collecting body and its preparation method and application |
| CN108172754A (en) * | 2018-01-09 | 2018-06-15 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108172755A (en) * | 2018-01-09 | 2018-06-15 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108232201A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108232199A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108232200A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN108232202A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN112863880A (en) * | 2021-01-22 | 2021-05-28 | 广西贺州市桂东电子科技有限责任公司 | Process method for medium-high voltage anode aluminum foil corrosion reaming |
| CN114744208A (en) * | 2022-03-29 | 2022-07-12 | 佛山市中技烯米新材料有限公司 | Current collector etching foil, preparation method thereof, electrode and lithium battery |
| CN114744208B (en) * | 2022-03-29 | 2023-02-10 | 佛山市中技烯米新材料有限公司 | Current collector etching foil, preparation method thereof, electrode and lithium battery |
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