CN107591247A - A kind of low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method - Google Patents
A kind of low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method Download PDFInfo
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- CN107591247A CN107591247A CN201710765155.8A CN201710765155A CN107591247A CN 107591247 A CN107591247 A CN 107591247A CN 201710765155 A CN201710765155 A CN 201710765155A CN 107591247 A CN107591247 A CN 107591247A
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- 239000011888 foil Substances 0.000 title claims abstract description 57
- 238000005260 corrosion Methods 0.000 title claims abstract description 33
- 230000007797 corrosion Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003990 capacitor Substances 0.000 title claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 74
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 60
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 15
- 238000000137 annealing Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 11
- 239000004411 aluminium Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 3
- 238000002203 pretreatment Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000007654 immersion Methods 0.000 abstract 3
- 239000012792 core layer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000005530 etching Methods 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 description 1
- 239000001741 Ammonium adipate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000019293 ammonium adipate Nutrition 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
-
- 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
- H01G9/055—Etched foil electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Laminated Bodies (AREA)
- Detergent Compositions (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses a kind of low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method, comprise the following steps：Pre-treatment is soaked with sodium hydroxide solution；Hydrochloric acid, sulfuric acid solution power-up corrosion 10 ~ 85 seconds, hydrochloric acid, sulfuric acid solution soak 10 ~ 85 seconds, running water cleaning, repeat burn into immersion and cleaning step 4 times；Reaming power-up corrosion 10 ~ 85 seconds is carried out in hydrochloric acid, sulfuric acid and phosphoric acid corrosion liquid, hydrochloric acid, sulfuric acid and phosphoric acid solution soak 10 ~ 85 seconds, running water cleaning, repeat burn into immersion and cleaning step 8 times；Soaked using hydrochloric acid solution, salpeter solution immersion, pure water cleaning after annealing processing.The present invention uses multistage hair engaging aperture multistage low frequency reaming control corrosion rate pattern, and processing and warm water cleaning in corresponding progress multistep tank liquor, the aluminium powder and foreign ion for making corrosion process are fully cleaned, finally give residual core layer thickness uniformly, the low contact resistance low-voltage aluminum electrolytic capacitor electrode foil that corrosion layer aluminium content is moderate, aluminium powder and impurity ion content are low, contact resistance can reduce by more than 40% after chemical conversion.
Description
Technical field
The present invention relates to a kind of electrochemical etching method of capacitor low-voltage anode foil.
Background technology
At present, aluminium electrolutic capacitor is with low pressure etched foil frequency-conversion eroding method：1. acid solution pre-treatment；2. hair engaging aperture is corroded；
3. reaming is corroded；4. post processing, cleaning and annealing.Corrosion process is power frequency using supply frequency（50Hz）, after corrosion, residual sandwich layer
Uneven thickness, corrosion layer etching extent is larger, and corrosion aluminium powder is not cleaned fully, and electrode foil contact resistance is big after causing chemical conversion；
It in addition, cleaning performance is bad, can also cause residual impurity ion, influence the use longevity of electrode foil current-leakage and aluminium electrolutic capacitor
Life.
The content of the invention
The invention aims to overcome the shortcomings of the above, there is provided a kind of cleaning performance is good, and foreign ion is few, contact electricity
Hinder low, the electrochemical etching method of the capacitor low-voltage anode foil of service life length.
The purpose of the present invention is achieved through the following technical solutions：A kind of low contact resistance low-voltage aluminum electrolytic capacitor electricity consumption
Pole foil corrosion method, comprises the following steps：
（a）Using 0.01 ~ 5wt% sodium hydroxide solution, low-voltage anode foil for electrolytic capacitor 0.5 is soaked at a temperature of 20 ~ 60 DEG C
~ 3 minutes；
（b）Step（a）Obtained anode foils using 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, temperature be 5 ~ 50 DEG C, electric current it is close
Spend to be acted on 10 ~ 85 seconds under the conditions of 0.1 ~ 1A/cm2；
（c）Step（b）Obtained anode foils are using 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, under the conditions of temperature is 5 ~ 50 DEG C
Effect 10 ~ 85 seconds；
（d）Step（c）Obtained anode foils use temperature to be cleaned 10 ~ 85 seconds for 40 ~ 60 DEG C of running water；
（e）Repeat step（b）、（c、）（d）4 times；
（f）Step（e）Obtained anode foils are handled in 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, 0.01 ~ 1wt% phosphoric acid corrosion liquid
Middle progress reaming corrosion, current density are 0.1 ~ 1A/cm2, and temperature is 10 ~ 45 DEG C, by 5 ~ 35Hz power supplys frequency of sine wave change
Rate carries out low frequency and corroded 10 ~ 85 seconds；
（g）Step（f）Handle obtained anode foils and use 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, 0.01 ~ 1wt% phosphoric acid,
Temperature acts on 10 ~ 85 seconds under the conditions of being 10 ~ 45 DEG C；
（h）Step（g）Obtained anode foils use temperature to be cleaned 10 ~ 85 seconds for 40 ~ 60 DEG C of running water；
（i）Repeat step（f）、（g）、（h）8 times；
（j）Using 2~6wt% hydrochloric acid solution, temperature is to be soaked 30~180 seconds at 20 ~ 80 DEG C；
（k）Using 0.1 ~ 4wt% salpeter solution, temperature is to be soaked 30 ~ 180 seconds at 20 ~ 80 DEG C；
（l）After being cleaned 30 ~ 180 seconds using pure water, made annealing treatment 20 ~ 180 seconds at a temperature of 400 ~ 460 DEG C.
The present invention has advantages below compared with prior art：
Alkali lye pre-treatment, hair engaging aperture and reaming procedure substep are carried out, and increase processing and warm water cleaning stream in tank liquor after each step
Journey, in reaming procedure, by controlling supply frequency, uniformly residual sandwich layer erosion profile is obtained, obtains a kind of the low of low contact resistance
Frequency caustic solution.
Brief description of the drawings：
Fig. 1 is comparative example electrode foil Cross Section Morphology figure；
Fig. 2 is electrode foil Cross Section Morphology figure of the present invention：
Embodiment：
With reference to specific embodiment and accompanying drawing, the invention will be further elaborated, but the present invention is not limited to following implementation
Example.Methods described without special instruction is conventional method.
Embodiment 1
（a）Electrolytic capacitor low-voltage anode light paper tinsel is placed in 0.01wt% sodium hydroxide solution, 3 points are soaked at a temperature of 40 DEG C
Clock；
（b）Step（a）Obtained anode foils using 6wt% hydrochloric acid, 0.1wt% sulfuric acid, temperature be 30 DEG C, current density be
Acted on 20 seconds under the conditions of 0.3A/cm2；
（c）Step（b）Obtained anode foils are acted on 20 seconds using 6wt% hydrochloric acid, 0.1wt% sulfuric acid under the conditions of being 30 DEG C in temperature；
（d）Step（c）Obtained anode foils use temperature to be cleaned 30 seconds for 40 DEG C of running water；
（e）Repeat step（b）、（c）、（d）4 times；
（f）Step（e）Obtained anode foils are handled in 6wt% hydrochloric acid, 0.1wt% sulfuric acid, 0.01wt% phosphoric acid corrosion liquid to be expanded
Pitting corrosion, current density 0.1A/cm2, temperature are 30 DEG C, and the 5 ~ 35Hz frequencies changed by sine wave carry out low frequency from low to high
Corrosion 20 seconds；
（g）Step（f）Obtained anode foils are handled using 6wt% hydrochloric acid, 0.1wt% sulfuric acid, 0.01wt% phosphoric acid, are 30 in temperature
Acted on 20 seconds under the conditions of DEG C；
（h）Step（g）Obtained anode foils use temperature to be cleaned 30 seconds for 40 DEG C of running water；
（i）Repeat step（f）、（g）、（h）8 times；
（j）Using 2wt% hydrochloric acid solution, temperature is to be soaked 30 seconds at 50 DEG C；
（k）Using 0.1wt% salpeter solution, temperature is to be soaked 30 seconds at 50 DEG C；
（l）After being cleaned 60 seconds using pure water, made annealing treatment 150 seconds at a temperature of 420 DEG C.
Embodiment 2
（a）Electrolytic capacitor low-voltage anode light paper tinsel is placed in 0.5wt% sodium hydroxide solution, 2 points are soaked at a temperature of 50 DEG C
Clock；
（b）Step（a）Obtained anode foils using 8wt% hydrochloric acid, 0.3wt% sulfuric acid, temperature be 40 DEG C, current density be
Acted on 40 seconds under the conditions of 0.5A/cm2；
（c）Step（b）Obtained anode foils are acted on 40 seconds using 8wt% hydrochloric acid, 0.3wt% sulfuric acid under the conditions of being 40 DEG C in temperature；
（d）Step（c）Obtained anode foils use temperature to be cleaned 40 seconds for 45 DEG C of running water；
（e）Repeat step（b）、（c）、（d）4 times；
（f）Step（e）Obtained anode foils are handled in 8wt% hydrochloric acid, 0.3wt% sulfuric acid, 0.1wt% phosphoric acid corrosion liquid to be expanded
Pitting corrosion, current density 0.3A/cm2, temperature are 35 DEG C, and the 5 ~ 35Hz frequencies changed by sine wave carry out low frequency from low to high
Corrosion 40 seconds；
（g）Step（f）Obtained anode foils are handled using 8wt% hydrochloric acid, 0.3wt% sulfuric acid, 0.1wt% phosphoric acid, are 35 DEG C in temperature
Under the conditions of act on 40 seconds；
（h）Step（g）Obtained anode foils use temperature to be cleaned 40 seconds for 45 DEG C of running water；
（i）Repeat step（f）、（g）、（h）8 times；
（j）Using 3wt% hydrochloric acid solution, temperature is to be soaked 60 seconds at 60 DEG C；
（k）Using 1wt% salpeter solution, temperature is to be soaked 60 seconds at 60 DEG C；
（l）After being cleaned 90 seconds using pure water, made annealing treatment 120 seconds at a temperature of 430 DEG C.
Embodiment 3
（a）Electrolytic capacitor low-voltage anode light paper tinsel is placed in 2wt% sodium hydroxide solution, soaked 1 minute at a temperature of 55 DEG C；
（b）Step（a）Obtained anode foils using 10wt% hydrochloric acid, 0.5wt% sulfuric acid, temperature be 45 DEG C, current density be
Acted on 60 seconds under the conditions of 0.7A/cm2；
（c）Step（b）Obtained anode foils act on 60 using 10wt% hydrochloric acid, 0.5wt% sulfuric acid under the conditions of being 45 DEG C in temperature
Second；
（d）Step（c）Obtained anode foils use temperature to be cleaned 60 seconds for 50 DEG C of running water；
（e）Repeat step（b）、（c）、（d）4 times；
（f）Step（e）Obtained anode foils are handled in 10wt% hydrochloric acid, 0.5wt% sulfuric acid, 0.5wt% phosphoric acid corrosion liquid to be expanded
Pitting corrosion, current density 0.4A/cm2, temperature are 40 DEG C, and the 5 ~ 35Hz frequencies changed by sine wave carry out low frequency from low to high
Corrosion 60 seconds；
（g）Step（f）Obtained anode foils are handled using 10wt% hydrochloric acid, 0.5wt% sulfuric acid, 0.5wt% phosphoric acid, are 40 in temperature
Acted on 60 seconds under the conditions of DEG C；
（h）Step（g）Obtained anode foils use temperature to be cleaned 60 seconds for 50 DEG C of running water；
（i）Repeat step（f）、（g）、（h）8 times；
（j）Using 4wt% hydrochloric acid solution, temperature is to be soaked 90 seconds at 70 DEG C；
（k）Using 2wt% salpeter solution, temperature is to be soaked 90 seconds at 70 DEG C；
（l）After being cleaned 120 seconds using pure water, made annealing treatment 90 seconds at a temperature of 440 DEG C.
Embodiment 4
（a）Using 4wt% sodium hydroxide solution, low-voltage anode foil for electrolytic capacitor is soaked at a temperature of 60 DEG C 0.5 minute；
（b）Step（a）Obtained anode foils using 12wt% hydrochloric acid, 0.8wt% sulfuric acid, temperature be 50 DEG C, current density be
Acted on 80 seconds under the conditions of 0.9A/cm2；
（c）Step（b）Obtained anode foils act on 80 using 12wt% hydrochloric acid, 0.8wt% sulfuric acid under the conditions of being 50 DEG C in temperature
Second；
（d）Step（c）Obtained anode foils use temperature to be cleaned 40 seconds for 55 DEG C of running water；
（e）Repeat step（b）、（c）、（d）4 times；
（f）Step（e）Obtained anode foils are handled in 12wt% hydrochloric acid, 0.8wt% sulfuric acid, 0.8wt% phosphoric acid corrosion liquid to be expanded
Pitting corrosion, current density 0.5A/cm2, temperature are 45 DEG C, and the 5 ~ 35Hz frequencies changed by sine wave carry out low frequency from low to high
Corrosion 80 seconds；
（g）Step（f）Obtained anode foils are handled using 12wt% hydrochloric acid, 0.8wt% sulfuric acid, 0.8wt% phosphoric acid, are 45 in temperature
Acted on 80 seconds under the conditions of DEG C；
（h）Step（g）Obtained anode foils use temperature to be cleaned 40 seconds for 80 DEG C of running water；
（i）Repeat step（f）、（g）、（h）8 times；
（j）Using 5wt% hydrochloric acid solution, temperature is to be soaked 120 seconds at 80 DEG C；
（k）Using 3wt% salpeter solution, temperature is to be soaked 120 seconds at 55 DEG C；
（l）After being cleaned 150 seconds using pure water, made annealing treatment 60 seconds at a temperature of 450 DEG C.
Comparative example（Existing etching process）
（a）Using 0.05wt% phosphoric acid solution, low-voltage anode foil for electrolytic capacitor is soaked at a temperature of 60 DEG C 1 minute；
（b）Step（a）Obtained anode foils using 8wt% hydrochloric acid, 0.5wt% sulfuric acid, temperature be 50 DEG C, current density be
Acted on 3 minutes under the conditions of 0.3A/cm2；
（c）Step（b）Handle obtained anode foils and reaming corrosion, electric current are carried out in 8wt% hydrochloric acid, 0.5wt% sulfuric acid corrosion liquid
Density is 0.3A/cm2, and temperature is 50 DEG C, and electrochemical corrosion 4 minutes is carried out by the 50Hz supply frequencies of sine wave change；
（d）Step（c）The salpeter solution that obtained anode foils use 1wt% is handled, temperature is to be soaked 60 seconds at 70 DEG C；
（e）After being cleaned 60 seconds using pure water, made annealing treatment 60 seconds at a temperature of 420 DEG C.
After corroding electrode paper tinsel of the present invention and the chemical conversion of the corroding electrode foil production line of existing process, correction data result is as follows
（Chemical conversion condition：Ammonium adipate tank liquor, Vfe=21V）：
As can be seen from the comparison result, significantly dropped using contact resistance after the corroding electrode paper tinsel chemical conversion of etching process output of the present invention
It is low, existing etching process is contrasted, is reduced more than 40%.
By being handled before alkali lye, hair engaging aperture and reaming procedure substep are carried out the present invention, and are increased after each step in tank liquor
Processing and warm water cleaning process, in reaming procedure, by controlling supply frequency, obtain uniformly residual sandwich layer erosion profile.
The another statement of applicant, the present invention illustrate the implementation method of the present invention and apparatus structure by above-described embodiment,
But the invention is not limited in above-mentioned embodiment, that is, does not mean that the present invention has to rely on the above method and structure could be real
Apply.Person of ordinary skill in the field is it will be clearly understood that any improvement in the present invention, to implementation method selected by the present invention etc.
Effect replacement and the addition of step, the selection of concrete mode etc., all fall within protection scope of the present invention and scope of disclosure.
The present invention is not limited to above-mentioned embodiment, all to realize the present invention using structure similar with the present invention and its method
All modes of purpose, within protection scope of the present invention.
Claims (1)
- A kind of 1. low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method, it is characterised in that：Comprise the following steps：（a）Using 0.01 ~ 5wt% sodium hydroxide solution, low-voltage anode foil for electrolytic capacitor 0.5 is soaked at a temperature of 20 ~ 60 DEG C ~ 3 minutes；（b）Step（a）Obtained anode foils using 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, temperature be 5 ~ 50 DEG C, electric current it is close Spend to be acted on 10 ~ 85 seconds under the conditions of 0.1 ~ 1A/cm2；（c）Step（b）Obtained anode foils are using 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, under the conditions of temperature is 5 ~ 50 DEG C Effect 10 ~ 85 seconds；（d）Step（c）Obtained anode foils use temperature to be cleaned 10 ~ 85 seconds for 40 ~ 60 DEG C of running water；（e）Repeat step（b）、（c、）、（d）4 times；（f）Step（e）Obtained anode foils are handled in 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, 0.01 ~ 1wt% phosphoric acid corrosion liquid Middle progress reaming corrosion, current density are 0.1 ~ 1A/cm2, and temperature is 10 ~ 45 DEG C, by 5 ~ 35Hz power supplys frequency of sine wave change Rate carries out low frequency and corroded 10 ~ 85 seconds；（g）Step（f）Handle obtained anode foils and use 6 ~ 12wt% hydrochloric acid, 0.05 ~ 1wt% sulfuric acid, 0.01 ~ 1wt% phosphoric acid, Temperature acts on 10 ~ 85 seconds under the conditions of being 10 ~ 45 DEG C；（h）Step（g）Obtained anode foils use temperature to be cleaned 10 ~ 85 seconds for 40 ~ 60 DEG C of running water；（i）Repeat step（f）、（g）、（h）8 times；（j）Using 2~6wt% hydrochloric acid solution, temperature is to be soaked 30~180 seconds at 20 ~ 80 DEG C；（k）Using 0.1 ~ 4wt% salpeter solution, temperature is to be soaked 30 ~ 180 seconds at 20 ~ 80 DEG C；（l）After being cleaned 30 ~ 180 seconds using pure water, made annealing treatment 20 ~ 180 seconds at a temperature of 400 ~ 460 DEG C.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765155.8A CN107591247A (en) | 2017-08-30 | 2017-08-30 | A kind of low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method |
| PCT/CN2018/080808 WO2019041797A1 (en) | 2017-08-30 | 2018-03-28 | Etching method for electrode foil for low-contact resistance low-voltage aluminum electrolytic capacitor |
| JP2018566562A JP6768088B2 (en) | 2017-08-30 | 2018-03-28 | Etching method of electrode foil for low-voltage aluminum electrolytic capacitors with low contact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765155.8A CN107591247A (en) | 2017-08-30 | 2017-08-30 | A kind of low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method |
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|---|---|
| CN107591247A true CN107591247A (en) | 2018-01-16 |
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|---|---|---|---|
| CN201710765155.8A Pending CN107591247A (en) | 2017-08-30 | 2017-08-30 | A kind of low contact resistance low-voltage aluminum electrolytic capacitor electrode foil corrosion method |
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| Country | Link |
|---|---|
| JP (1) | JP6768088B2 (en) |
| CN (1) | CN107591247A (en) |
| WO (1) | WO2019041797A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108486645A (en) * | 2018-03-19 | 2018-09-04 | 南通海星电子股份有限公司 | A kind of caustic solution of patch type aluminium electrolutic capacitor low-field electrode foil |
| WO2019041797A1 (en) * | 2017-08-30 | 2019-03-07 | 南通海星电子股份有限公司 | Etching method for electrode foil for low-contact resistance low-voltage aluminum electrolytic capacitor |
| CN113026087A (en) * | 2021-04-29 | 2021-06-25 | 南通海星电子股份有限公司 | Preparation method of nano-microporous structure aluminum electrode foil for automobile electronics |
| CN113279046A (en) * | 2021-05-20 | 2021-08-20 | 浙江丰川电子环保科技股份有限公司 | Rapid chemical corrosion process for anode aluminum foil for electrolytic capacitor |
| CN113611536A (en) * | 2021-08-10 | 2021-11-05 | 南通海星电子股份有限公司 | Manufacturing method for reducing foil dust of low-voltage electrode foil |
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| CN112981516B (en) * | 2021-02-03 | 2022-04-05 | 广州金立电子有限公司 | Anode aluminum foil corrosion method for aluminum electrolytic capacitor |
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| WO2019041797A1 (en) * | 2017-08-30 | 2019-03-07 | 南通海星电子股份有限公司 | Etching method for electrode foil for low-contact resistance low-voltage aluminum electrolytic capacitor |
| CN108486645A (en) * | 2018-03-19 | 2018-09-04 | 南通海星电子股份有限公司 | A kind of caustic solution of patch type aluminium electrolutic capacitor low-field electrode foil |
| CN113026087A (en) * | 2021-04-29 | 2021-06-25 | 南通海星电子股份有限公司 | Preparation method of nano-microporous structure aluminum electrode foil for automobile electronics |
| CN113026087B (en) * | 2021-04-29 | 2021-08-10 | 南通海星电子股份有限公司 | Preparation method of nano-microporous structure aluminum electrode foil for automobile electronics |
| CN113279046A (en) * | 2021-05-20 | 2021-08-20 | 浙江丰川电子环保科技股份有限公司 | Rapid chemical corrosion process for anode aluminum foil for electrolytic capacitor |
| CN113611536A (en) * | 2021-08-10 | 2021-11-05 | 南通海星电子股份有限公司 | Manufacturing method for reducing foil dust of low-voltage electrode foil |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019041797A1 (en) | 2019-03-07 |
| JP6768088B2 (en) | 2020-10-14 |
| JP2019535120A (en) | 2019-12-05 |
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