CN106001111A - Micro-forming rolling technology preparing high-specific-volume aluminum foil electrode - Google Patents
Micro-forming rolling technology preparing high-specific-volume aluminum foil electrode Download PDFInfo
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- CN106001111A CN106001111A CN201610329163.3A CN201610329163A CN106001111A CN 106001111 A CN106001111 A CN 106001111A CN 201610329163 A CN201610329163 A CN 201610329163A CN 106001111 A CN106001111 A CN 106001111A
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- rolling
- foil electrode
- aluminum foil
- rolling mill
- electrode
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- 239000011888 foil Substances 0.000 title claims abstract description 52
- 238000005096 rolling process Methods 0.000 title claims abstract description 46
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000005097 cold rolling Methods 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims abstract description 9
- 238000005530 etching Methods 0.000 claims abstract description 8
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 5
- 238000006056 electrooxidation reaction Methods 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- 239000011265 semifinished product Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract 2
- 238000003754 machining Methods 0.000 claims abstract 2
- 239000005030 aluminium foil Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 21
- 238000003801 milling Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 2
- 239000000047 product Substances 0.000 abstract description 4
- 239000008367 deionised water Substances 0.000 abstract description 2
- 229910021641 deionized water Inorganic materials 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a micro-forming rolling technology preparing a high-specific-volume aluminum foil electrode. Aluminum foil with the thickness ranging from 0.12 mm to 0.30 mm is subjected to single-pass rolling through a high-precision rolling machine to form a semi-finished product with the two faces provided with even grooves with the submillimeter size. The rolling force ranges from 5 kN to 20 kN, deformation is 41.7%, the rolling speed ranges from 0.05 m/s to 1 m/s, and tension control is performed before rolling and after rolling. Before rolling, the rolling machine idles for 5 min to 10 min firstly, and a corresponding roll gap value (taking bounces into consideration) is obtained through adjustment for rolling after the rolling machine enters a stable state. After rolling, the aluminum foil is cleaned and degreased through a 1mol/L NaOH solution, and then is cleaned through deionized water, the aluminum foil is input into a blast drying box to be dried and is then etched in a mixed solution of hydrochloric acid (2 mol/L) and aluminum sulfate (0.2 mol/L) at the temperature of 80 DEG C, the current density is 75 mA/cm<2>, and the etching time ranges from 40 s to 60 s. The micro-forming rolling technology has the beneficial effects that the aluminum foil is adopted as a base material in the technology, a cold rolling and electrochemical corrosion technology is used for preparing the aluminum foil electrode, the machining technology of the aluminum foil electrode is simple, batched production is facilitated, a finished product has larger specific area, and the specific volume of the aluminum foil electrode is obviously increased.
Description
Technical field
The present invention relates to a kind of microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode, belong to metal material preparation processing
Technical field, specifically provide a kind of foil electrode prepares technological method for processing.
Background technology
Aluminium electrolutic capacitor is because having the characteristics such as specific capacitance is big, volume is little, light weight, low price at various electric wires
Road is widely used.Develop towards volume miniaturization, integrated direction now with electronic product, to aluminium electroloysis electricity
The performance of container proposes requirements at the higher level, i.e. on the premise of ensureing performance (Fabrication of High Specific Capacitance), makes volume reduce as far as possible.Therefore, grind
Study carefully aluminium electrolutic capacitor miniaturization, i.e. realize higher position static capacity (than electric capacity), develop high-performance electric the most at present
The key of device product, or the focus of Fabrication of High Specific Capacitance research.And electrode aluminium foil is the essential core raw material of aluminium electrolutic capacitor, it is
Technology content and the highest part of added value.The static capacity of aluminium foil unit are is referred to as ratio electric capacity, and it is to weigh capacitor
The important indicator of energy, electric capacity is directly proportional to pole plate unit are and dielectric constant, is inversely proportional to polar plate spacing simultaneously.Therefore to improve
The measure can taked than electric capacity has, and increases unit are and dielectric constant, or reduces electrolyte thickness.Electrode thickness reduces
There is certain restriction, if substrate too film capacitor is the most breakdown, therefore improved by reduction electrode thickness
It is limited than the space of electric capacity.And dielectric constant is usually certain for given material, therefore works as capacitor
When working under rated operational voltage, than electric capacity, the main size by anode foils unit are is controlled, in order to make to increase than electric capacity
Add, it is necessary to improve pole plate per effective area.
Improve the method that the method for aluminium foil effective unit area mainly uses electrochemical corrosion, or two the most both at home and abroad
Person is used in conjunction with.Etched foil is aluminium foil to be placed in single salt solution or hydrochloric acid solution manually corrode in early days, rotten
Erosion efficiency is slow, corrodes the most uneven stable, and the product quality obtained is low, and can not carry out the aluminium foil that purity is higher effectively
Corrosion.Along with raising and the research that deepens continuously of corrosion technology of China's economic level, the most abroad corrode the introduction of line, with
Shi Caiyong mixing sour candle liquid system carries out continuous corrosion, finally can corrode rafifinal.But it is current domestic relevant
The key technology of etched foil typically broadly falls into the internal information of enterprise, and different producers also may can use different corrosion
Technology, but for the weak point of current domestic rotten candle technique, it need into a reinforcement.At present, both at home and abroad for
It is less that foil electrode prepares forming technology relevant report.Mainly have:
Wang Lizhen etc. are coated after aluminium foil being carried out surface etch with electrochemical etching, and research aluminium foil etches and do not etches
Impact on interface resistance, result shows: aluminium foil etching can effectively reduce interface resistance.Alwitt et al. is by with 1mol/L
HCl be etchant solution, aluminium foil is carried out electrochemistry corruption candle, result shows: the contact surface that corrosion makes between activated carbon and aluminium foil
Long-pending increase.C.Portet and P.L.Tabema et al. carries out corrosion treatmentCorrosion Science with electrochemical erosion method to aluminium foil respectively, then in corruption
Depositing the activated carbon mixed with CNT with sol-gal process on erosion aluminium foil, experiment shows, the method can make activated carbon and aluminium foil
Between resistance reduce.Conductive agent is applied on aluminium foil improve nano-lithium ion cell absorbent charcoal material to arrive by Pasquiar people
And the purpose of the contact resistance between collector.But for etching condition during aluminium foil corrosion to double layer capacitor performance
Impact, awaits further studying.
In sum, the research expanding aluminium foil specific volume at present is concentrated mainly on electrochemical corrosive process aspect, is respectively provided with one
Fixed limitation.Exploitation is a kind of more effectively, it is easy to the preparation technology of the Fabrication of High Specific Capacitance foil electrode of production is significant.
Summary of the invention
For solving above-mentioned all or part of problem, the invention provides a kind of microsecond delay preparing Fabrication of High Specific Capacitance foil electrode and roll
Technique processed, this technique is to utilize aluminium foil for raw material, uses cold-rolling process+electrochemical corrosive process to prepare foil electrode.Use
Cold-rolling process processes foil electrode, and processing is simple, it is easy to producing in enormous quantities, manufacturing expense is greatly lowered, and production efficiency is high, one-tenth
Material rate is high, energy consumption is low, and can well improve the specific surface area of material.After further by the method for electrochemical corrosion again
Semi-finished product aluminium foil is carried out surface corrosion, improves the specific surface area of foil electrode to obtain the foil electrode of more Fabrication of High Specific Capacitance.
The invention provides a kind of microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode: by thickness be 0.12～
The aluminium foil of 0.30mm becomes the two-sided trough of belt aluminium foil having uniform microflute, width of mini longitudinal channels a through high-precision rolling mill one-pass roller, rolling
=0.15～0.20mm, it is spaced b=0.39～0.80mm, degree of depth h=0.05～0.10mm；Roll-force is 5～20kN, and passage becomes
Shape amount is 41.7%, has tension force control before and after rolling, and outlet tension force is 1～1.5 times of entrance tension force；Before the rolling, first allow
Milling train idle running 5～10min, makes milling train enter relatively stable duty, is then adjusted to corresponding gap values between rollers (in view of rolling
The spring of machine), arranging milling train stable rolling speed is 0.05～1m/s, waits to be rolled.By aluminium foil after rolling by concentration it is first
The NaOH solution of 1mol/L is carried out oil removing to aluminium foil, then cleans with deionized water, puts in air dry oven and is dried, then
At 80 DEG C, in the mixed solution of hydrochloric acid Yu aluminum sulfate, (wherein the concentration of hydrochloric acid is 2mol/L, and the concentration of aluminum sulfate is 0.2mol/
L) perform etching in.Electric current density is 75mA/cm2, etch period is 40～60s.
The light paper tinsel that material selection thickness is 0.12～0.30mm of described aluminum foil electrode.
The light paper tinsel width of described aluminum foil electrode is 500～800mm.
Described high-precision rolling mill upper working rolls and lower working rolls has sub-mm size groove, and top and bottom rolls Guan Bi forms foil electrode
Preforming shape.
The present invention, relative to prior art, has such advantages as and effect:
(1) the invention provides a kind of microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode, use cold rolling technology, electrochemistry
Corrosion technology prepares foil electrode, and its processing technique is simple, it is easy to producing in enormous quantities, manufacturing expense is greatly lowered；
(2) process foil electrode by rolling mill practice, the base material of chemical etching can be made to have bigger specific surface area, further
It is effectively improved the specific volume of foil electrode.
Accompanying drawing explanation
Fig. 1 is aluminum foil electrode structural representation of the present invention；
Fig. 2 is roll structure schematic diagram in the present invention；
Fig. 3 is that in the present invention, roll contacts schematic diagram with base material.
In figure, reference is expressed as: 1-top working roll, 2-base material, 3-bottom working roll.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is further described.
Embodiment 1
As shown in base material in Fig. 3, foil electrode a size of: separation a=0.15mm, groove width b=0.39mm, groove depth h=
0.05mm, aluminum foil thickness 0.12mm, as in figure 2 it is shown, KYG selected by base material1The light paper tinsel of 0.120mm, width 500mm, thickness
0.12mm, uses high-precision rolling mill to roll, and first, first allows milling train dally 8min, makes milling train enter relatively stable work
State, is then adjusted to corresponding gap values between rollers, and arranging milling train stable rolling speed is 0.5m/s, after guide and guards is adjusted, and will
Light paper tinsel is sent into milling train by guide and guards and is carried out continuous rolling, and roll-force is 5kN, and pass deformation controls 35%～45%,
Outlet tension force is 1.2 times of entrance tension force.
Embodiment 2
As shown in base material in Fig. 3, foil electrode a size of: separation a=0.18mm, groove width b=0.58mm, groove depth h=
0.05mm, aluminum foil thickness 0.20mm, as in figure 2 it is shown, base material selects the light paper tinsel of 0.20mm, width 500mm, length 100mm, use
High Precision Cold unit rolls, and first, first allows milling train dally 8min, makes milling train enter relatively stable duty, so
After be adjusted to corresponding gap values between rollers, arranging milling train stable rolling speed is 0.3m/s, after guide and guards is adjusted, by light foil material
Sending into milling train by guide and guards and carry out continuous rolling, roll-force is 10kN, and pass deformation controls 30%～40%, outlet
Tension force is 1.1 times of entrance tension force.
Embodiment 3
As shown in base material in Fig. 3, foil electrode a size of: separation a=0.20mm, groove width b=0.80mm, groove depth h=
0.05mm, aluminum foil thickness 0.30mm, as in figure 2 it is shown, the light paper tinsel that base material selects thickness to be 0.30mm, width 800mm, length
100mm, uses High Precision Cold Rolling Mill to roll, and first, first allows milling train dally 8min, makes milling train enter relatively stable work
State, is then adjusted to corresponding gap values between rollers, and arranging milling train stable rolling speed is 0.2m/s, after guide and guards is adjusted, and will
Light foil material is sent into milling train by guide and guards and is carried out continuous rolling, and roll-force is 20kN, pass deformation control 25%～
35%, mouth tension force is 1.4 times of entrance tension force.
Claims (6)
1. the microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode, it is characterised in that: this technique is that to utilize aluminium foil be former
Material, uses cold-rolling process+electrochemical corrosive process to prepare foil electrode, specifically includes three below step:
Step one, designs foil electrode according to applicable technological requirement, and wherein said foil electrode is two-sided micro-with sub-mm size
Groove；
Step 2, is processed according to the processing technique of cold rolling+electrochemical corrosion, the first cold rolling work used of Design and Machining
Roller, upper working rolls and lower working rolls is with sub-mm size groove, and aluminium foil uses high-precision rolling mill carry out rolling to be become double-sided belt and have microflute
Semi-finished product；
Step 3, cleans oil removing, ionized water cleaning by the aluminium foil after rolling through NaOH solution, puts in corrosive liquid after drying
Perform etching.
2. according to the microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode a kind of described in claim 1, it is characterised in that: institute
Aluminum light paper tinsel selected by the base material stating aluminum foil electrode, and base material thickness is 0.12 ~ 0.30 mm, and width is 500 ~ 800 mm.
3. according to the microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode a kind of described in claim 1, it is characterised in that: institute
The upper working rolls and lower working rolls stating High Precision Cold Rolling Mill has sub-mm size groove, and top and bottom rolls Guan Bi forms the preform of foil electrode
Shape.
4. according to the microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode a kind of described in claim 1, it is characterised in that: institute
Aluminum foil electrode is two-sided uniform sub-mm size microflute, and well width is 0.10 ~ 0.20 mm, is spaced apart 0.39 ~ 0.80 mm,
The degree of depth is 0.05 ~ 0.10 mm.
5. according to the microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode a kind of described in claim 1, it is characterised in that: institute
State aluminum foil electrode to obtain through one-pass roller；Roll-force is 5 ~ 20 kN, and pass deformation is 41.7%, before and after rolling all
Having tension force control, outlet tension force is 1 ~ 1.5 times of entrance tension force；Before the rolling, first allow milling train dally 5 ~ 10 min, make to roll
Machine enters relatively stable duty, is then adjusted to corresponding gap values between rollers (in view of the spring of milling train) and rolls, rolls
Machine stable rolling speed is 0.05 ~ 1 m/s.
6. according to the microsecond delay rolling mill practice preparing Fabrication of High Specific Capacitance foil electrode a kind of described in claim 1, it is characterised in that: institute
Being 1 mol/L by NaOH cleaning solution concentration, etchant solution used is mixed solution (its of hydrochloric acid solution and aluminum sulfate solution
The concentration of middle hydrochloric acid is 2mol/L, and the concentration of aluminum sulfate is 0.2 mol/L), electric current density used is 75 mA/cm2, during etching
Between be 40 ~ 60 s, etching temperature is 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329163.3A CN106001111A (en) | 2016-05-18 | 2016-05-18 | Micro-forming rolling technology preparing high-specific-volume aluminum foil electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329163.3A CN106001111A (en) | 2016-05-18 | 2016-05-18 | Micro-forming rolling technology preparing high-specific-volume aluminum foil electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106001111A true CN106001111A (en) | 2016-10-12 |
Family
ID=57098392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610329163.3A Pending CN106001111A (en) | 2016-05-18 | 2016-05-18 | Micro-forming rolling technology preparing high-specific-volume aluminum foil electrode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3605573A4 (en) * | 2017-03-31 | 2020-06-10 | Nippon Chemi-Con Corporation | Electrode foil, wound capacitor, method for manufacturing electrode foil, and method for manufacturing wound capacitor |
| CN114023973A (en) * | 2021-11-04 | 2022-02-08 | 山东大学 | Porous aluminum current collector and preparation method and application thereof |
| CN114380398A (en) * | 2021-12-29 | 2022-04-22 | 同济大学 | Cathode regulation and control method for electrochemical scale inhibition technology |
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| CN102122576A (en) * | 2009-12-24 | 2011-07-13 | 松下电器产业株式会社 | Aluminum foil for aluminum electrolytic capacitor electrode and method for manufacturing the same |
| CN103187176A (en) * | 2013-03-22 | 2013-07-03 | 常州大学 | Corrosion technology of anode aluminum foil of electrolysis capacitor |
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-
2016
- 2016-05-18 CN CN201610329163.3A patent/CN106001111A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| JPH0688298A (en) * | 1992-09-08 | 1994-03-29 | Sumikei Arumihaku Kk | Production of aluminum electrode foil for electrolytic capacitor |
| CN1547752A (en) * | 2001-07-18 | 2004-11-17 | �Ѻ͵繤��ʽ���� | Aluminum foil for electrolytic capacitor and manufacturing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3605573A4 (en) * | 2017-03-31 | 2020-06-10 | Nippon Chemi-Con Corporation | Electrode foil, wound capacitor, method for manufacturing electrode foil, and method for manufacturing wound capacitor |
| US11120951B2 (en) | 2017-03-31 | 2021-09-14 | Nippon Chemi-Con Corporation | Electrode foil, winding capacitor, electrode foil manufacturing method, and winding capacitor manufacturing method |
| CN114023973A (en) * | 2021-11-04 | 2022-02-08 | 山东大学 | Porous aluminum current collector and preparation method and application thereof |
| CN114023973B (en) * | 2021-11-04 | 2023-08-11 | 山东大学 | Porous aluminum current collector and preparation method and application thereof |
| CN114380398A (en) * | 2021-12-29 | 2022-04-22 | 同济大学 | Cathode regulation and control method for electrochemical scale inhibition technology |
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