TW552601B - Method to manufacture dry negative foil of Aluminum electrolyte capacitor - Google Patents

Abstract

A method to manufacture dry negative foil of Aluminum electrolyte capacitor is disclosed, which is provided for avoiding the problem that the electrical characteristics (quality) of the wet electro-chemically etched Aluminum foil in the processing method of the prior art cannot be kept stable, and the problem of handling the waste acid and handling cost after using acid solution massively. In the manufacturing method of dry negative foil using physical vapor deposition, proper conductive layer is deposited continuously on the surface of the proper Aluminum foil material, so as to achieve electron conduction effect with even higher efficiency, and obtain more stable surface characteristics. It is the best choice for the negative electrode material, and not only the electrical conductibility of the surface conduction layer is higher than that of the current commercial product, but also the mechanical performance of the Aluminum foil material is not affected, which is advantageous for the winding process of capacitor.

Description

552601

[Technical Field] The present invention relates to a method for manufacturing a dry negative foil for electrolyzers and electric valleyrs of Mingli Electrolytic Lightning 6 ki, which is specifically described as an electrostatic capacity that can at least double the surface of capacitors. Ways to reach / and stand up. The effective surface electron conduction rate between j and aluminum is the mainstream of aluminum electrolytic electricity. The stability of the product has reached the number 1 announced in the first figure. 4 The use of water-soluble acidic water-soluble system utilizes acid-filled sulfur and sulfur adsorbate containing a period of remaining liquid. And (e) the aqueous solution is still a container product for the stable method of the chemical film, and the current lack of production is the lack of bottlenecks; the method of "custom aluminum 0 3 9 2 3" is used to clear the name of the original aluminum ion by the liquid encapsulation, which is used Residual ions, such as acetic acid and acetic acid, are removed, and the third stage is followed by the treatment solution, which grows, and there are many defects and ϊΆ) because of human eyebrows, and the electrolytic solution patent contains the following 羯 surface engraving solution, The cleaned aqueous solution of nitric acid is treated at the cathode, which is combined with the application of aluminum: it is in a container case (the next step: the contamination is to increase the solution as; [Prior technology] The breakthrough of the first method of low-resistance preparation of 'Electrical Etching Foil', the quality of which is, for example, the method is as in our country), the main reason is the use of oxygen), and the area is processed in a moment; C) The treatment after the first engraving process is to use the preparation of the hybrid film in the engraved holes; the oxygen thread on the cathode foil such as ammonium hypophosphite; etc .; Select the electrodeless foil to make the former (c) before the citation case; (b) Etching the effective treatment liquid, and then etch the second liquid, and then ammonium oxalate, the power source, and the cathode are used to etch the aluminum foil 552601. 5. Description of the invention (2) After the f-surface liquid acid solution is used to perform a wet electrochemical etching operation on the original aluminum foil, then the stabilization process is performed; once the acid solution is relatively used, a relatively large amount of waste is formed. The problem of acid treatment and treatment cost. Second, due to the inevitable oxidation problem caused by the acid solution on the surface of the foil, the electrical characteristics (quality) stability of the surface is solved by the material characteristics. Keeping it constant, the quality can not be improved, so the method of manufacturing the aluminum cathode cathode foil is not ideal. One other 'known technology also has related manufacturing methods for aluminum foil electrodes, as shown in Figure —: No, it uses Dry vapor deposition of aluminum foil electrode by physical vapor deposition (:.) (=: Inside series "oxidized acid aqueous solution clear 2 physical" into the finished product of dry aluminum drop electrode; under the above conditions, therefore, the ratio of electrode thickness to electrode thickness is 2 Special requirements are not applicable to electrolytic capacitors; therefore, the electrode requirements and points of the 12-capacitor capacitors are eager to be modified _ such as red ^ ~ the various shortcomings of using the method, and finally successfully developed: this second "After careful research, Xingu wanted to use a different surface from the wet miner and the dry negative foil of the electric appliance to perform the surface shovel treatment: = dry physical method 'in the box table and got a stable expression f more , The efficiency of electron conduction, and those who are characteristic. The impact and change of external environment

Page 5 552601 __ 丨 " " _ V. Description of the invention (3) [Objective of the invention. An aluminum electrolytic capacitor for the manufacture of dry negative foil, cooling, and it is used to perform acoustic method on the surface of aluminum foil by dry physical method ' Its treatment ^ achieves higher efficiency of electron conduction, and 仃 the surface of the electrical coating surface, without being affected by the external ring] = two :: get a stable step to improve the quality of aluminum electrolytic capacitors. a cross-characteristics of the dry type of the electrolytic capacitor of the present invention-the second method is to reduce the aluminum electrolytic capacitor manufacturing method, and to improve the anode foil material of the aluminum electrolytic capacitor, Light, thin, short and small components are required. , Area to make it effective [Technical content] As shown in Figure 3, the aluminum electrolytic capacitor is provided with a container element 1 and a sealing element connected to the opening of the electric box 3 housed in the capacitor element—the sealed element. The conductor 2 is formed by a separator 2 between the positive foil and the negative foil. The capacitor element 1 is connected to the anode foil and the cathode 2 and is rolled. The conductor 2 is the conductor 2 Through the seal D element ^ each = one side of one pair of body 3 is pulled out; of which aluminum electrolytic electricity = Qiao 4 through holes and the box is often the electrolyte, but aluminum electrolytic capacitors; the material of the negative box is 552601 V. Description of the invention (4) 1 1 1-CT c + C-CT: total capacitance of electrolytic capacitors C + ·· capacitance of positive foil material C-·· capacitance of negative foil material AC a — d C: capacitance A: Area of conductive layer d ·· Thickness of dielectric layer

The requirements for its electrical characteristics are as follows: —, electrostatic capacity (C): The current A Electrochemical Lithium manufactured by the wet electrochemical method ’is approximately 90 // f / cm 2 ~ 450 / ^ / (: ^

High electrolyte compatibility. One by one with the electrolytic interface of EG or GBL series. ^ = Brother stability, and effectively improve the rate of surface electron conduction to electrical stability: --- -UL jjKji / 'Because the aluminum metal foil has high oxygen activity, it is easy to produce a film on the surface', and there are different oxide film states due to different environments,

Page 7 552601 V. Description of the invention (5) The electrical characteristics of the container are not stable enough due to its low thickness (d): one by one because of the negative 榀% ± n & Short requirements;, the lower the thickness is, as shown in Figures 4 and 5, the container is dry type_manufacturing method *, with the electrolysis method, but using physical vapor deposition (PVD, electrochemical: the original flute material surface ' The suitable guide on the continuous deposition key is the guide of the right product. The surface conductive layer is not only more profitable than the current commercial use; ^ ta, but also the mechanical properties of the original aluminum foil, which is more attractive to capacitors. The winding process includes the following steps: a) Pre-treatment 4 1, which uses aluminum oxide foil to remove 5 i (thickness: 15 ~ 80 // m, purity: 99 · 0% ~ 99. 9% ) Roughening the surface of grease; b) the first layer of vapor deposition treatment 4 2 is placed on the aluminum original foil 51 to control the deposition rate (vacuity > 10-5torr, Ar, temperature > 2000.) To form a layer having a plurality of holes 5 2 1 with a thickness of 0 · 1 to 3. 〇βπι titanium metal 5 2 (Ti) or graphite c) a conductive layer to effectively increase its surface area and conduct electrons effectively; c) a second layer of vapor deposition treatment 4 3, which is formed on the titanium metal 52 to control the deposition rate to form a layer thickness. · 〇1 # „! ~ 〇 · 5 of titanium nitride 5 3 (T i N) to prevent the negative electrode foil from oxidizing and become aluminum

552601 V. Description of the invention (6) 5 negative electrode foil materials for electrolytic capacitors; 1) By using the above-mentioned dry-type negative electrode foil manufacturing method, the surface of the aluminum primary foil 51 is coated with n ^ 亍 to avoid the use of a large amount of acid Since the oxidation problem after the liquid does not cause oxidation, the relative stability of the gas characteristics (quality) is improved because the aluminum foil is 51% (that is, C _ will not be changed by the external ring). Moreover, since the use of physical vapor deposition (PVD) product type 3 'can also be used on the surface of an appropriate aluminum original foil 51 1 dielectric layer, a continuous conductive layer with a plurality of holes 5 2 1 can be simultaneously added, Those who have a large surface area to increase the electrostatic capacity. [Features and effects] The method for manufacturing the dry type negative electrode flute for electrolytic capacitors provided by the present invention has the following advantages when compared with other conventional technologies: 1. It can improve the electrical stability of the capacitor surface. 2. It can increase the electrostatic capacity by at least twice. 3. It can effectively improve the surface electron conduction rate. 4, with industrial and commercial and industrial use value. However, the above are only within the scope of equal changes and modifications made by the present invention which cannot limit the scope of implementation of the present invention. This is only one of the preferred embodiments of the present invention. In the context, that is, anyone who applies for the invention according to the present invention should still be covered by the present invention. In summary, the present invention has indeed achieved the desired effect.

Page 9 552601 V. Description of the invention (7) The invention of technology is highly advanced, and the large errors of the current oil pressure system are completely eliminated, except for those that have industrial applicability and have inventions that have not been considered by others; The invention has not been disclosed before the application of the invention, and its effectiveness has been achieved. Its progressiveness and inventiveness obviously meet the application requirements of the invention patent, and the invention application is filed according to law.

Page 10 552601 Brief description of the drawings [Illustration] The first diagram is a schematic diagram of the manufacturing method of a conventional aluminum electrolytic capacitor cathode foil. The second diagram is a schematic diagram of the dry manufacturing method of a conventional battery anode material. The third diagram is aluminum Sectional view of the front side of an electrolytic capacitor. The fourth diagram is a schematic flowchart of a method for manufacturing a negative electrode foil according to the present invention. The fifth figure is a cross-sectional view of the manufacturing process of the negative electrode foil of the present invention. [Illustration of drawing number] 1 ·· Capacitor element 2 · · Lead 3 · · Box 4 · · Sealing element 4 1 · · Pre-treatment 42 · · First layer of vapor deposition 4 4 · · Second layer of vapor deposition Treatment 5 ·· Negative electrode foil material 5 1 ·· Mingyuan f white 521 ·· Hole 5 2. · Chin metal 5 3 ·· Titanium nitride

Claims (1)

552601 申请, application scope of patent 1, a physical vapor deposition plating conductive process is as follows (a) roughening pre-treatment; = 2: solution capacitor dry-type negative electrode foil manufacturing method, using the "," type in the appropriate foil material Surface, continuous sink layer to improve the stability of the electrical characteristics of the aluminum foil surface, where it is the use of an oxidizing acid aqueous solution to remove the surface of the aluminum original foil grease (b) the first layer rate (true thickness 0., to increase ( 〇 The second layer rate is formed to form a vapor deposition process, which is formed on the aluminum original box to control the deposition velocity and space velocity > 10 ~ 5t〇rr, Ar, temperature > 2000. m ~ 3 · 〇 # πι titanium metal (Ti) or graphite (〇 conductive layer with a large effective area; vapor deposition process, is deposited on the titanium metal to control the deposition rate of a layer of 0.01 / ZΠ1 ~ 0.5 # m of nitrogen Titanium oxide (TiN) is a material for a negative electrode foil for electrolytic capacitors. An aluminum electrolytic capacitor described in item 1 of the patent application scope of dry-type negative electrodes, a difficult-to-manufacture method, in which the conductive layer has a plurality of holes Page 12