CN116453864B - Electrode foil with high bending strength and preparation process thereof - Google Patents
Electrode foil with high bending strength and preparation process thereof Download PDFInfo
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- CN116453864B CN116453864B CN202310359768.7A CN202310359768A CN116453864B CN 116453864 B CN116453864 B CN 116453864B CN 202310359768 A CN202310359768 A CN 202310359768A CN 116453864 B CN116453864 B CN 116453864B
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- 239000011888 foil Substances 0.000 title claims abstract description 119
- 238000005452 bending Methods 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 24
- 239000010703 silicon Substances 0.000 claims abstract description 24
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 239000011572 manganese Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000011812 mixed powder Substances 0.000 claims description 12
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910000676 Si alloy Inorganic materials 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000007670 refining Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 9
- 239000010410 layer Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses an electrode foil with high bending strength and a preparation process thereof, wherein the electrode foil with high bending strength comprises an aluminum foil substrate, the content of silicon element in the aluminum foil substrate is between 0.1 and 9.9ppm, and the content of manganese element is between 10 and 2000 ppm. The invention controls the element components in the aluminum foil of the base material (on one hand, low silicon or no silicon and on the other hand, improves manganese) so as to achieve the purposes of refining grains and reducing longitudinal rolling streaks of the aluminum foil, and the manufactured electrode foil has better mechanical properties after formation, better bending strength and tensile strength, reduced longitudinal and transverse mechanical property difference, smaller leakage current and the like.
Description
Technical Field
The invention belongs to the technical field of electrode foils, and particularly relates to an electrode foil with high bending strength and a preparation process thereof.
Background
As the demand for miniaturization of products increases, higher demands are also placed on the mechanical properties of the electrode foil. In order to improve the mechanical properties of the electrode foil, the traditional method is to improve the heat treatment temperature to 450-500 ℃ and treat the electrode foil at the temperature for 3-4 minutes to refine the grain size of the residual core layer of the electrode foil, thereby improving the yield strength of the aluminum foil.
However, the oxide film formed by the electrode foil after the previous chemical or electrochemical corrosion is unstable, and the structure of the oxide film on the surface of the electrode foil is damaged by the excessively high heat treatment temperature, so that the leakage current of the electrode foil is abnormally large.
To solve the above problems, the invention patent application publication CN110783107a discloses a method for manufacturing a high mechanical performance high voltage electrode foil, which comprises the following steps: a) The aluminum foil after 3 minutes of soaking treatment by nitric acid with the concentration of 2wt% at 45 ℃ is subjected to primary soaking treatment by a triethylenediamine solution with the concentration of 0.5wt% -1 wt% at 40-50 ℃ for 2 minutes, and then is subjected to primary heat treatment by an oven with the temperature of 300-350 ℃ for 1 minute; b) After the primary heat treatment, carrying out secondary soaking treatment on the mixture by using a triethylene diamine solution with the concentration of 0.2 to 0.5 weight percent and the temperature of 40 to 50 ℃ for 2 minutes, and then carrying out secondary heat treatment by using an oven with the temperature of 400 to 450 ℃ for 1 minute; c) And (3) after the secondary heat treatment, carrying out two-stage normal-temperature pure water soaking treatment, carrying out each-stage treatment for 2 minutes, and carrying out three-stage heat treatment for 1 minute by using an oven at 450-500 ℃ to finally finish the production.
Although the process can improve the bending strength and the tensile strength of the electrode foil and reduce the leakage current of the electrode foil, the mechanical property and the leakage current of the electrode foil are still not ideal, and the difference of longitudinal and transverse properties among the mechanical properties of the electrode foil is still as great as that of the prior art.
Disclosure of Invention
The invention aims to provide an electrode foil with high bending strength and a preparation process thereof, wherein the electrode foil has high mechanical properties such as bending strength and small longitudinal and transverse mechanical property difference.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The electrode foil with high bending strength comprises an aluminum foil substrate, wherein the content of silicon element in the aluminum foil substrate is between 0.1 and 9.9ppm, and the content of manganese element is between 10 and 2000 ppm.
The invention controls the element components in the aluminum foil of the base material (on one hand, low silicon or no silicon and on the other hand, high manganese) so as to achieve the purposes of refining grains and reducing longitudinal rolling streaks of the aluminum foil, and the manufactured electrode foil has better mechanical properties after formation, better bending strength and tensile strength, reduced longitudinal and transverse mechanical property difference, smaller leakage current and the like.
Preferably, in the electrode foil with high bending strength, the content of silicon element in the aluminum foil substrate is between 1 and 5.0 ppm.
The lower the silicon element content in the aluminum foil substrate, the smaller the difference in longitudinal and transverse mechanical properties of the electrode foil, and the smaller the leakage current.
Preferably, in the electrode foil with high bending strength, the content of manganese element in the aluminum foil substrate is between 50 and 1000 ppm.
The higher the content of manganese element in the aluminum foil substrate, the better the mechanical properties (including bending strength, tensile strength, etc.) of the electrode foil, and. The smaller the difference in mechanical properties in the machine direction. However, since an increase in manganese causes an increase in leakage current of the electrode foil, it is further preferable that the aluminum foil substrate contains manganese in an amount of 50 to 500ppm in the electrode foil having high bending strength.
Preferably, in the electrode foil with high bending strength, the thickness of the aluminum foil base material is 10 to 200 μm.
Preferably, the electrode foil with high bending strength further comprises a sintered body layer on the surface of the aluminum foil substrate, wherein the sintered body layer is formed by sintering mixed powder of aluminum powder and aluminum-silicon alloy powder, and the silicon element content in the sintered body layer is less than 100ppm.
The eutectic temperature of the aluminum-silicon alloy is about 577 ℃, and when the heat treatment exceeds the temperature point, the aluminum-silicon alloy starts to be converted into a molten state, so that the fusion of aluminum powder and the surface of the aluminum foil substrate is promoted, and the aluminum powder can be firmly dissolved on the aluminum foil substrate. While silicon must be introduced into the electrode foil by the silicon-aluminum alloy powder, too high a silicon content leads to an increase in leakage current and a decrease in mechanical properties, so that the content of silicon element in the sintered body layer is limited to not more than 100ppm.
Preferably, in the electrode foil having high bending strength, the average particle diameter of the aluminum powder is 0.5 to 100 μm, and the average particle diameter of the aluminum-silicon alloy powder is 0.1 to 10 μm.
Preferably, in the electrode foil having high bending strength, the sintered body layer has a thickness of 20 to 1000 μm.
The invention also provides a preparation process of the electrode foil with high bending strength, which sequentially comprises the following steps:
(1) Mixing aluminum powder, aluminum-silicon alloy powder and mixed powder of a binder according to a preset mass ratio, blending the mixed powder into mixed fluid by using a solvent, coating the mixed fluid on at least one surface of an aluminum foil substrate, drying and compacting the mixed fluid to obtain a composite aluminum foil;
(2) The composite aluminum foil is firstly subjected to glue discharging heat treatment at 200-500 ℃, and then subjected to sintering heat treatment at 550-660 ℃ under inert gas protective atmosphere, so as to obtain a sintered aluminum foil;
(3) And carrying out formation treatment on the sintered aluminum foil to obtain the electrode foil with high bending strength.
Compared with the prior art, the invention has the beneficial effects that:
The invention controls the element components in the aluminum foil of the base material (on one hand, low silicon or no silicon and on the other hand, improves manganese) so as to achieve the purposes of refining grains and reducing longitudinal rolling streaks of the aluminum foil, and the manufactured electrode foil has better mechanical properties after formation, better bending strength and tensile strength, reduced longitudinal and transverse mechanical property difference, smaller leakage current and the like.
Detailed Description
The following will describe the technical scheme of the present invention in further detail by listing specific embodiments.
Example 1
The electrode foil with high bending strength comprises an aluminum foil substrate and sintered body layers positioned on two side surfaces of the aluminum foil substrate, and the preparation process comprises the following steps:
(1) Mixing the mixed powder of aluminum powder and aluminum-silicon alloy powder according to a preset mass ratio, and compacting at least one surface of an aluminum foil substrate according to a preset amount to obtain a composite aluminum foil;
Specifically, firstly, aluminum powder with an average particle size of 3 mu m, aluminum-silicon alloy powder with an average particle size of 500nm and polyvinylidene fluoride are mixed according to a mass ratio of 100:1:1 to obtain mixed powder (the silicon content in the mixed powder is 90 ppm), and then N-methylpyrrolidone is used for blending the mixed powder into a mixed fluid with a solid content of 60%;
Coating the mixed fluid on an aluminum foil substrate with the thickness of 20 mu m and the silicon content of 0.2ppm in a double-sided symmetrical manner by using a doctor blade coater, wherein the thickness of one side coating is 50-60 mu m, and the total thickness of the composite aluminum foil after drying and compacting reaches 130 mu m;
(2) The composite aluminum foil is firstly subjected to glue discharging heat treatment at 200-500 ℃, and then subjected to sintering heat treatment at 550-660 ℃ under inert gas protective atmosphere, so as to obtain a sintered aluminum foil;
specifically, the composite aluminum foil is firstly placed at 450 ℃ for heat treatment of adhesive removal to remove the adhesive, and the heat treatment time of adhesive removal is 2 hours;
then placing the composite aluminum foil subjected to the glue discharging heat treatment in an argon protective atmosphere at 620 ℃ for sintering heat treatment, wherein the sintering heat treatment time is 5 hours, and obtaining a sintered aluminum foil;
(3) Forming the sintered aluminum foil to obtain a formed foil;
The sintered aluminum foil was subjected to formation treatment by an inorganic acid formation process (refer to CN 100463086C) at a formation voltage of 520V, to obtain the electrode foil of the present example having high bending strength.
Examples 2 to 4
The preparation process of the electrode foil with high bending strength in the embodiment is the same as that in embodiment 1, and the only difference is that: the silicon content in the aluminum foil substrate was 1ppm, 5ppm and 9ppm in this order.
Comparative examples 1 to 2
This comparative example is an electrode foil, which is prepared in the same manner as in example 1, except that: the silicon content of the aluminum foil substrate was 50ppm and 200ppm in this order.
Examples 5 to 7
The preparation process of the electrode foil with high bending strength in the embodiment is the same as that in embodiment 1, and the only difference is that: in the step (1), the silicon content in the mixed powder was 50ppm, 20ppm and 10ppm in this order.
Comparative examples 3 to 4
This comparative example is an electrode foil, which is prepared in the same manner as in example 1, except that: in the step (1), the silicon content in the mixed powder was 100ppm and 200ppm in this order.
The electrode foils prepared in examples 1 to 7 and comparative examples 1 to 4 were used to test leakage current and mechanical properties of each electrode foil, and the test results are shown in Table 1.
TABLE 1
As can be seen from table 1, as the silicon content in the aluminum foil substrate gradually decreases, the leakage current of the electrode foil gradually becomes smaller after formation, and furthermore, the difference in the longitudinal and transverse bending strength of the electrode foil is significantly reduced as compared with comparative examples 1 and 2. In addition, as the silicon content in the sintered body layer gradually decreases, the leakage current of the electrode foil after formation further decreases, and the difference in the longitudinal and transverse bending strength of the electrode foil also tends to further decrease.
Examples 8 to 16
The preparation process of the electrode foil with high bending strength in the embodiment is the same as that in embodiment 1, and the only difference is that: the manganese content of the aluminum foil substrate is 10ppm, 50ppm, 100ppm, 200ppm, 400ppm, 800ppm, 1000ppm, 1500ppm and 2000ppm in sequence.
Comparative examples 5 to 6
This comparative example is an electrode foil, which is prepared in the same manner as in example 1, except that: the manganese content of the aluminum foil base material is 5ppm and 2500ppm in sequence.
The electrode foils prepared in examples 8 to 16 and comparative examples 5 to 6 were used to test leakage current and mechanical properties of each electrode foil, and the test results are shown in Table 2.
TABLE 2
As is apparent from Table 2, the mechanical properties of the electrode foil are improved with the increase of the manganese element in the aluminum foil substrate as compared with example 1, and particularly, the bending strength is maintained at a higher level when the manganese element content is between 50 and 800ppm, but the bending strength is reduced with the further increase of the manganese element content (there is a tendency to be reduced already when the manganese element content is 800 ppm), so that it is preferable to control the manganese element content to 50 to 500ppm in combination.
In addition, as the content of manganese increases, the leakage current of the electrode foil increases, and in order to control the leakage current, the content of manganese is preferably controlled to be 1000ppm or less, and more preferably 500ppm or less.
Claims (7)
1. The electrode foil with high bending strength comprises an aluminum foil substrate, and is characterized in that the silicon element content in the aluminum foil substrate is between 0.2 and 1.0 ppm, and the manganese element content is between 100 and 800 ppm.
2. The high bending strength electrode foil of claim 1, wherein the aluminum foil substrate has a manganese content of between 100 and 500 ppm.
3. The high bending strength electrode foil of claim 1, wherein the aluminum foil substrate has a thickness of 10 to 200 μm.
4. The high bending strength electrode foil of claim 1, further comprising a sintered body layer on the surface of the aluminum foil substrate, said sintered body layer being sintered from a mixed powder of aluminum powder and aluminum silicon alloy powder, the silicon element content of the sintered body layer being less than 100ppm.
5. The high bending strength electrode foil according to claim 4, wherein the average particle diameter of the aluminum powder is 0.5 to 100 μm and the average particle diameter of the aluminum-silicon alloy powder is 0.1 to 10 μm.
6. The high bending strength electrode foil of claim 4, wherein the sintered body layer has a thickness of 20 to 1000 μm.
7. The process for preparing an electrode foil having high bending strength according to any one of claims 1 to 6, comprising the steps of, in order:
(1) Mixing aluminum powder, aluminum-silicon alloy powder and mixed powder of a binder according to a preset mass ratio, blending the mixed powder into mixed fluid by using a solvent, coating the mixed fluid on at least one surface of an aluminum foil substrate, drying and compacting the mixed fluid to obtain a composite aluminum foil;
(2) The composite aluminum foil is firstly subjected to glue discharging heat treatment at 200-500 ℃, and then subjected to sintering heat treatment at 550-660 ℃ under inert gas protective atmosphere, so as to obtain a sintered aluminum foil;
(3) And carrying out formation treatment on the sintered aluminum foil to obtain the electrode foil with high bending strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310359768.7A CN116453864B (en) | 2023-04-06 | 2023-04-06 | Electrode foil with high bending strength and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310359768.7A CN116453864B (en) | 2023-04-06 | 2023-04-06 | Electrode foil with high bending strength and preparation process thereof |
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| Publication Number | Publication Date |
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| CN116453864A CN116453864A (en) | 2023-07-18 |
| CN116453864B true CN116453864B (en) | 2024-05-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1138139A (en) * | 1966-09-06 | 1968-12-27 | Aluminum Co Of America | Improved aluminum alloy capacitor foil |
| US4240128A (en) * | 1977-10-03 | 1980-12-16 | Aluminium Industrie Vaassen B.V. | Aluminum cathode foil for electrolytic capacitors including a copper content |
| JPH01214108A (en) * | 1988-02-23 | 1989-08-28 | Mitsubishi Alum Co Ltd | Foil for electrolytic capacitor electrode |
| JPH055145A (en) * | 1991-06-18 | 1993-01-14 | Showa Alum Corp | Aluminum alloy for electrolytic capacitor electrode foil |
| JP2007253185A (en) * | 2006-03-23 | 2007-10-04 | Furukawa Sky Kk | Method of manufacturing aluminum foil for electrolytic capacitor electrode |
| CN105874549A (en) * | 2013-12-27 | 2016-08-17 | 东洋铝株式会社 | Electrode foil for aluminum electrolytic capacitor and production method for same |
| CN110890222A (en) * | 2019-11-27 | 2020-03-17 | 新疆众和股份有限公司 | High-purity plate ingot of high-voltage anode aluminum foil for electrolytic capacitor, anode aluminum foil and electrolytic capacitor |
-
2023
- 2023-04-06 CN CN202310359768.7A patent/CN116453864B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1138139A (en) * | 1966-09-06 | 1968-12-27 | Aluminum Co Of America | Improved aluminum alloy capacitor foil |
| US4240128A (en) * | 1977-10-03 | 1980-12-16 | Aluminium Industrie Vaassen B.V. | Aluminum cathode foil for electrolytic capacitors including a copper content |
| JPH01214108A (en) * | 1988-02-23 | 1989-08-28 | Mitsubishi Alum Co Ltd | Foil for electrolytic capacitor electrode |
| JPH055145A (en) * | 1991-06-18 | 1993-01-14 | Showa Alum Corp | Aluminum alloy for electrolytic capacitor electrode foil |
| JP2007253185A (en) * | 2006-03-23 | 2007-10-04 | Furukawa Sky Kk | Method of manufacturing aluminum foil for electrolytic capacitor electrode |
| CN105874549A (en) * | 2013-12-27 | 2016-08-17 | 东洋铝株式会社 | Electrode foil for aluminum electrolytic capacitor and production method for same |
| CN110890222A (en) * | 2019-11-27 | 2020-03-17 | 新疆众和股份有限公司 | High-purity plate ingot of high-voltage anode aluminum foil for electrolytic capacitor, anode aluminum foil and electrolytic capacitor |
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| CN116453864A (en) | 2023-07-18 |
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