CN120844157A - A method for processing titanium cathode plate - Google Patents
A method for processing titanium cathode plateInfo
- Publication number
- CN120844157A CN120844157A CN202511367471.0A CN202511367471A CN120844157A CN 120844157 A CN120844157 A CN 120844157A CN 202511367471 A CN202511367471 A CN 202511367471A CN 120844157 A CN120844157 A CN 120844157A
- Authority
- CN
- China
- Prior art keywords
- cathode plate
- titanium cathode
- scalding
- titanium
- starting sheet
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
本发明属于电积钴、电积镍技术领域，具体涉及一种钛阴极板的处理方法，包括如下步骤：S1、获取待处理的钛阴极板，并对所述钛阴极板进行预处理；S2、对所述钛阴极板进行第一次烫洗；S3、对所述钛阴极板进行第二次烫洗；S4、将所述钛阴极板用于始极片的制备；本发明通过采用两级梯度温度对钛阴极板进行烫洗，使其表面生成纳米状氧化膜，界面能降低，剥离功降低，使得始极片易于剥离，提高剥片效率。
The present invention belongs to the technical field of electrolytic cobalt and electrolytic nickel, and specifically relates to a method for processing a titanium cathode plate, comprising the following steps: S1, obtaining a titanium cathode plate to be processed and pre-processing the titanium cathode plate; S2, performing a first scalding on the titanium cathode plate; S3, performing a second scalding on the titanium cathode plate; S4, using the titanium cathode plate for preparing a starting electrode; the present invention adopts a two-stage gradient temperature to scald the titanium cathode plate, so that a nano-shaped oxide film is generated on the surface of the titanium cathode plate, the interfacial energy is reduced, the stripping work is reduced, the starting electrode plate is easy to strip, and the stripping efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of electrodeposited cobalt and electrodeposited nickel, and particularly relates to a treatment method of a titanium cathode plate.
Background
Currently, the industry of electrodeposited cobalt (nickel) mainly adopts a starting sheet as a cathode plate of an electrodeposited cobalt (nickel) product. Because the cobalt electrode is high in stress, the starting sheet of the plate groove is easy to separate from the titanium cathode plate and explode, the starting sheet is small in thickness and easy to deform, part of the plate surface is blackened, the exploding plate starting sheet cannot be used for processing the starting sheet, and the yield of the starting sheet is reduced. In order to reduce the occurrence of explosion plates, the titanium cathode plate needs to be pretreated regularly, and generally, when the pretreated titanium cathode plate is subjected to groove recharging electrodeposition, the situation that the titanium cathode plate is difficult to strip easily occurs, so that the efficiency of the stripping machine set is affected.
Disclosure of Invention
The invention provides a treatment method of a titanium cathode plate, which comprises the following steps of S1, obtaining a titanium cathode plate to be treated, preprocessing the titanium cathode plate, S2, conducting primary scalding on the titanium cathode plate, S3, conducting secondary scalding on the titanium cathode plate, and S4, using the titanium cathode plate for preparing a starting sheet.
As a preferable scheme of the treatment method of the titanium cathode plate, in the step S2, the temperature of the first scalding is 80-85 ℃ and the time is 10-20min, and deionized water is adopted for the first scalding;
Further, the temperature of the first scalding is in a range of any one or two of 80 ℃, 81 ℃, 82 ℃, 83 ℃, 84 ℃ and 85 ℃.
As a preferable scheme of the treatment method of the titanium cathode plate, in the step S3, the temperature of the second scalding is 60-65 ℃ and the time is 20-40min, and deionized water is adopted for the second scalding.
Further, the second scalding temperature is in a range between any one or two of 60 ℃, 61 ℃, 62 ℃, 63 ℃, 64 ℃ and 65 ℃.
As a preferable scheme of the treatment method of the titanium cathode plate, the pretreatment in the step S1 comprises the steps of S11, stripping a starting sheet on the titanium cathode plate, and soaking and washing for 30-60min by adopting deionized water.
As a preferable scheme of the treatment method of the titanium cathode plate, the treatment method further comprises S12, polishing after polishing the titanium cathode plate, wherein the polishing is carried out by adopting a polishing machine at a rotating speed of 800-1500 rpm.
As a preferable scheme of the treatment method of the titanium cathode plate, the method further comprises S13, pickling the titanium cathode plate by adopting an acid solution, wherein the pickling time is 2-4h.
As a preferable scheme of the treatment method of the titanium cathode plate, the acid solution is hydrochloric acid or sulfuric acid.
As a preferable scheme of the treatment method of the titanium cathode plate, the concentration of hydrogen ions in the acid solution is 1-4mol/L;
further, the concentration of hydrogen ions in the acid solution is in a range of any one or between 1mol/L, 1.5mol/L, 2mol/L, 2.5mol/L, 3mol/L, 3.5mol/L, 4 mol/L.
As a preferable scheme of the treatment method of the titanium cathode plate, the step S4 further comprises the step of applying the titanium cathode plate to the preparation of the starting sheet for not more than 72 hours.
As a preferable scheme of the treatment method of the titanium cathode plate, the step S4 further comprises the step of stripping the starting sheet, wherein the yield of the starting sheet is more than or equal to 90%.
According to the invention, the titanium cathode plate is subjected to scalding by adopting two-stage gradient temperatures, so that a nano oxide film is generated on the surface of the titanium cathode plate, the interface energy is reduced, the stripping work is reduced, the starting sheet is easy to strip, and the stripping efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Figure 1 is an XRD pattern for each stage of the titanium cathode plate treatment of example 1.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description will be made clearly and fully with reference to the technical solutions in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A treatment method of a titanium cathode plate comprises the following steps:
s1, acquiring a titanium cathode plate to be treated, and preprocessing the titanium cathode plate;
the titanium cathode plate to be treated in the invention is a titanium cathode plate which is continuously used for 15-20 days in the process of electrodepositing cobalt or nickel, and can be used for preparing a starting sheet.
The pretreatment of the titanium cathode plate mainly comprises the steps of stripping residual cobalt or nickel on the titanium cathode plate, then soaking and washing the titanium cathode plate for 30-60min by adopting deionized water to remove residual acid on the surface of the titanium cathode plate, polishing the titanium cathode plate by adopting an angle grinder or an abrasive belt machine, firstly polishing cobalt or nickel which is not completely stripped on the titanium cathode plate, then uniformly polishing along the texture direction of the titanium cathode plate, and finally polishing by using a polishing machine, wherein the rotating speed of the polishing machine is 800-1500rpm.
The pretreatment of the titanium cathode plate further comprises the step of carrying out acid washing on the titanium cathode plate, wherein if a sulfuric acid system is adopted when the cobalt or nickel is electrodeposited by adopting the titanium cathode plate, dilute sulfuric acid is correspondingly adopted for carrying out acid washing, if a hydrochloric acid system is adopted when the cobalt or nickel is electrodeposited by adopting the titanium cathode plate, dilute hydrochloric acid is correspondingly adopted for carrying out acid washing, and the concentration of hydrogen ions in an acid solution is 1-4mol/L and the acid washing time is 2-4h in the acid washing process by adopting hydrochloric acid or sulfuric acid.
S2, carrying out first scalding on the titanium cathode plate;
The method specifically comprises the steps of scalding a titanium cathode plate for the first time by adopting deionized water, wherein the temperature of the deionized water is 80-85 ℃, the scalding time is 10-20min, residual sulfuric acid can be removed by the first scalding, acid pickling byproducts (TiOSO 4 or TiOCl 2) can be removed, microscopic defects (such as cracks and sulfur adsorption) possibly exist in an oxide film generated by acid pickling, the amorphous area or defect on the surface of TiO 2 can be locally dissolved in a high-temperature water (80-85 ℃) environment through repairing the oxide film in a high-temperature water environment, and then under thermodynamic driving, the dissolved Ti 4+ and OH - are redeposited to the defect position:
TiO 2 (defect) +2H 2 O Ti 4++4OH-→TiO2 (complete).
S3, carrying out second scalding on the titanium cathode plate;
The second ironing step of the titanium cathode plate specifically comprises the steps of ironing with deionized water, wherein the temperature of the deionized water is 60-65 ℃, the ironing time is 20-40min, the titanium oxide film is converted from an amorphous state to crystallization by the second ironing, the oxide film structure is densified, the interface energy is reduced, and the starting plate is easier to strip after the titanium cathode plate is prepared.
S4, the titanium cathode plate is used for preparing a starting sheet.
The titanium cathode plate treated by the steps S1, S2 and S3 can be applied to the preparation of a cobalt or nickel starting sheet, and further, the time for the preparation of the treated titanium cathode plate applied to the starting sheet is not more than 72 hours from the completion of treatment.
The treated titanium cathode plate is exposed in the air for a long time, and the TiO 2 passivation film on the surface of the titanium can further react with O 2 and H 2 O in the air to cause the slow thickening of the oxide film, namely Ti+O 2→TiO2 (the speed of the titanium cathode plate is about 0.1-0.5 nm/day at room temperature), the increase of electron tunneling resistance, the increase of the electro-deposition overpotential and the improvement of crystallinity, and the self-repairing capability of the oxide film can be reduced.
Example 1
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 15 days, soaking and washing the titanium cathode plate in a deionized water tank for 50 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 1000rpm, pickling by dilute sulfuric acid with the concentration of 2mol/L for 2 hours, standing for a period of time, transferring the titanium cathode plate to an ironing and washing tank, conducting primary ironing and washing by deionized water, wherein the ironing and washing temperature is 85 ℃ and the ironing and washing time is 10 minutes, conducting secondary ironing and washing by deionized water, wherein the ironing and washing temperature is 60 ℃ and the ironing and washing time is 30 minutes, preparing a cobalt starting sheet by the titanium cathode plate after the ironing and washing is finished, and the finished product rate of the prepared starting sheet is 92%.
Example 2
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 17 days, soaking and washing the titanium cathode plate in a deionized water tank for 30 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 800rpm, pickling by dilute sulfuric acid with the concentration of 1.5mol/L for 2 hours, standing for a period of time, transferring the titanium cathode plate to an scalding tank, carrying out first scalding by deionized water at the scalding temperature of 80 ℃ for 15 minutes, carrying out second scalding by deionized water at the scalding temperature of 65 ℃ for 20 minutes, preparing a cobalt starting sheet by the titanium cathode plate after scalding, and obtaining the finished starting sheet with the finished product rate of 93%.
Example 3
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 20 days, soaking and washing the titanium cathode plate in a deionized water tank for 60 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 1500rpm, pickling by dilute sulfuric acid with the concentration of 0.5mol/L for 2 hours, standing for a period of time, transferring the titanium cathode plate to an scalding tank, carrying out first scalding by deionized water at 83 ℃ for 20 minutes, carrying out second scalding by deionized water at 63 ℃ for 40 minutes, and preparing a cobalt starting sheet of the titanium cathode plate after scalding, wherein the finished product rate of the prepared starting sheet is 94%.
Comparative example 1
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 15 days, soaking and washing the titanium cathode plate in a deionized water tank for 30 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 800rpm, pickling by dilute sulfuric acid with the concentration of 1.5mol/L for 2 hours, standing for a period of time, transferring the titanium cathode plate to an scalding tank, carrying out first scalding by deionized water at the scalding temperature of 80 ℃ for 15 minutes, carrying out second scalding by deionized water at the scalding temperature of 65 ℃ for 20 minutes, preparing a cobalt starting sheet by the titanium cathode plate after 5 days of scalding, and obtaining the finished starting sheet with the yield of 84%.
Comparative example 2
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 15 days, soaking and washing the titanium cathode plate in a deionized water tank for 20 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 500rpm, pickling by dilute sulfuric acid with the concentration of 0.3mol/L for 1 hour, standing for a period of time, transferring the titanium cathode plate to an scalding tank, carrying out first scalding by deionized water at the scalding temperature of 70 ℃ for 8 minutes, carrying out second scalding by deionized water at the scalding temperature of 55 ℃ for 15 minutes, preparing a cobalt starting sheet by the titanium cathode plate after scalding, and obtaining the finished starting sheet with the finished product rate of 70%.
Comparative example 3
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 15 days, soaking and washing the titanium cathode plate in a deionized water tank for 70 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 1700rpm, pickling by dilute sulfuric acid with the concentration of 3mol/L for 5 hours, standing for a period of time, transferring the titanium cathode plate to an ironing and washing tank, conducting primary ironing and washing by deionized water, wherein the ironing and washing temperature is 90 ℃ and the ironing and washing time is 30 minutes, conducting secondary ironing and washing by deionized water, wherein the ironing and washing temperature is 70 ℃ and the ironing and washing time is 50 minutes, and preparing a cobalt starting sheet by the titanium cathode plate after the ironing and washing is finished, wherein the finished product rate of the prepared starting sheet is 74%.
Comparative example 4
The method comprises the steps of obtaining a titanium cathode plate which is continuously used for 15 days, soaking and washing the titanium cathode plate in a deionized water tank for 30 minutes, polishing the titanium cathode plate by a polishing machine after polishing by an angle grinder, wherein the rotating speed of the polishing machine is 800rpm, pickling by dilute sulfuric acid with the concentration of 1.5mol/L for 2 hours, standing for a period of time, transferring the titanium cathode plate to an scalding tank, scalding by deionized water at the scalding temperature of 80 ℃ for 15 minutes, and preparing a cobalt starting sheet of the titanium cathode plate after scalding, wherein the finished product rate of the prepared starting sheet is 85%.
Referring to fig. 1, fig. 1 shows XRD patterns of the titanium cathode plate treatment stages in example 1, by which it can be seen that the titanium cathode plate after the second ironing has a distinct sharp diffraction peak, which is a diffraction peak of titanium oxide film, that is, indicates that the oxide film is crystalline, while the titanium cathode plate after the first ironing has a relatively wide insignificant diffraction peak (only one or several widened "humps" are detected) from the left side, which is an amorphous oxide film, and the surface of the titanium cathode plate after the pickling has no diffraction peak of titanium oxide film.
The embodiment and the comparative example can show that the titanium cathode plate is treated by the technical scheme of polishing and pickling and carrying out twice scalding by adopting the gradient temperature, and the titanium cathode plate treated by the technical scheme of the invention is used for preparing the starting sheet, so that the yield of the starting sheet can be obviously increased.
According to the invention, the titanium cathode plate is subjected to scalding by adopting two-stage gradient temperatures, so that a nano oxide film is generated on the surface of the titanium cathode plate, the interface energy is reduced, the stripping work is reduced, the starting sheet is easy to strip, and the stripping efficiency is improved.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the content of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. The treatment method of the titanium cathode plate is characterized by comprising the following steps of:
s1, acquiring a titanium cathode plate to be treated, and preprocessing the titanium cathode plate;
S2, carrying out first scalding on the titanium cathode plate;
s3, carrying out second scalding on the titanium cathode plate;
s4, using the titanium cathode plate for preparing a starting sheet;
In the step S2, the temperature of the first scalding is 80-85 ℃ and the time is 10-20min, and deionized water is adopted for the first scalding;
in the step S3, the temperature of the second scalding is 60-65 ℃ and the time is 20-40min, and deionized water is adopted for the second scalding.
2. The method according to claim 1, wherein the pretreatment in step S1 includes:
S11, stripping the starting sheet on the titanium cathode plate, and soaking and washing with deionized water for 30-60min.
3. The method according to claim 2, wherein the step S11 further comprises:
And S12, polishing the titanium cathode plate, wherein the polishing is carried out by adopting a polishing machine at a rotating speed of 800-1500 rpm.
4. A method of treating a titanium cathode plate according to claim 3, wherein said step S12 further comprises:
S13, acid washing is carried out on the titanium cathode plate by adopting acid solution, and the acid washing time is 2-4h.
5. The method of claim 4, wherein the acid solution is hydrochloric acid or sulfuric acid.
6. The method for treating a titanium cathode plate as recited in claim 5, wherein the concentration of hydrogen ions in said acid solution is 1 to 4mol/L.
7. A method of treating a titanium cathode plate as defined in claim 1, wherein said step S4 further comprises applying said titanium cathode plate to the starting sheet for a period of time not exceeding 72 hours.
8. The method according to claim 1, wherein the step S4 further comprises stripping the starting sheet, wherein the yield of the starting sheet is not less than 90%.
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| CN202511367471.0A CN120844157A (en) | 2025-09-24 | 2025-09-24 | A method for processing titanium cathode plate |
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