WO2013038928A1 - 電解めっき用陽極および該陽極を用いる電解めっき法 - Google Patents
電解めっき用陽極および該陽極を用いる電解めっき法 Download PDFInfo
- Publication number
- WO2013038928A1 WO2013038928A1 PCT/JP2012/072237 JP2012072237W WO2013038928A1 WO 2013038928 A1 WO2013038928 A1 WO 2013038928A1 JP 2012072237 W JP2012072237 W JP 2012072237W WO 2013038928 A1 WO2013038928 A1 WO 2013038928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electroplating
- anode
- oxide
- catalyst layer
- amorphous
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
- C25B11/097—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds comprising two or more noble metals or noble metal alloys
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
Definitions
- the present invention reduces metal ions in an aqueous solution on a cathode, electroplating anode used for electroplating to produce a desired metal film or metal foil, and metal ions in an aqueous solution on the cathode,
- the present invention relates to an electroplating method for producing a desired metal film or metal foil.
- Electroplating is a method of producing a metal film or metal foil by energizing a solution containing metal ions (hereinafter referred to as an electrolyte).
- an electrogalvanized steel sheet used in the body of an automobile dissolves zinc ions.
- a steel plate is immersed in the aqueous solution, zinc ions are reduced using the steel plate as a cathode, and a zinc film is formed on the steel plate.
- a conductive substrate such as a steel plate
- electroplating one example of a cylindrical cathode that can be rotated into an aqueous solution containing copper ions is used, for example, in the production of electrolytic copper foil.
- a process is also included in which a copper foil is produced by immersing the part, continuously depositing a copper thin film on the surface of the cathode while rotating the cathode, and simultaneously peeling the thin film from one end of the cathode.
- metals that are electroplated in this way include copper, zinc, tin, nickel, cobalt, lead, chromium, indium, platinum group metals (platinum, iridium, ruthenium, palladium, etc.), noble metals (silver, gold), Examples include other transition metal elements, metals generally called rare metals or critical metals, or alloys thereof.
- Such electroplating anodes are used in various shapes depending on the metal film or metal foil to be produced.
- carbon electrodes such as graphite and glassy carbon, lead alloy electrodes
- examples include platinum-coated titanium electrodes and oxide-coated titanium electrodes.
- an oxide-coated titanium electrode in which a titanium substrate is coated with a catalyst layer containing iridium oxide, and a chloride-based aqueous solution containing metal ions is used.
- the present inventor has disclosed an electrode in which a catalyst layer containing crystalline or amorphous iridium oxide is formed on a conductive substrate as an oxide-coated titanium electrode used for such an electroplating anode. 2 discloses.
- Patent Document 3 and Patent Document 4 disclose oxide-coated titanium electrodes used for electroplating.
- examples of electroplating using an acidic aqueous solution such as an acidic aqueous solution of sulfuric acid are mainly described.
- electroplating may be performed using a substantially neutral or alkaline aqueous solution.
- the electroplating targeted in (1) also covers electroplating using an aqueous solution in a wide pH range from acidic to alkaline and electroplating using a chloride-based aqueous solution.
- the energy consumed in electroplating is the product of the electrolysis voltage and the amount of electricity applied, and the amount of metal deposited at the cathode is proportional to this amount of electricity. Therefore, the electrical energy required per unit weight of the metal to be electroplated (hereinafter referred to as the power consumption basic unit) becomes smaller as the electrolysis voltage is lower.
- This electrolytic voltage is a potential difference between the anode and the cathode, and the cathode reaction varies depending on the metal electroplated on the cathode, and the cathode potential varies depending on the type of reaction.
- the main reaction of the anode is generation of chlorine when an aqueous solution containing a high concentration of chloride ions is used as the electrolytic solution, and generation of oxygen in an aqueous solution in a wide pH range except this.
- a sulfuric acid aqueous solution is used in the production of electrolytic copper foil by electroplating, and an alkaline aqueous solution is used for electrogold plating.
- the anodic reaction in these electrolytes is oxygen generation, or at least the main reaction of the anode is oxygen generation.
- the potential of the anode during electroplating varies depending on the material used for the anode.
- the anode used for electroplating includes reactions that may occur on the anode in addition to these main reactions (hereinafter referred to as side reactions). Contrary to the reaction, the catalyst activity is required to be low.
- the sulfuric acid aqueous solution used for the production of the electrolytic copper foil described above lead ions are contained as impurities in addition to copper ions which are essential components in the electrolytic solution.
- the lead ions may be oxidized on the anode and deposited as lead dioxide on the anode. Such precipitation of lead dioxide on the anode occurs at the same time as oxygen generation, which is the main reaction at the anode.
- an electroplating anode using an aqueous solution as an electrolyte has 1) high catalytic activity for oxygen generation and / or chlorine generation, and 2) side reactions that cause precipitation of metal oxides on the anode. Furthermore, even if it does not contain a metal component, it has a low catalytic activity for side reactions that cause deposits that deposit and accumulate on the anode. 3) Therefore, it has a high selectivity for the main reaction. 4) As a result, The anode potential is low, in other words, the overvoltage for the anode reaction is small, and even if electroplating is continued, the anode potential does not increase due to the side reaction. 5) Therefore, the electrolysis voltage is low and the electrolysis voltage is low.
- Patent Document 2 a conductive catalyst layer containing amorphous iridium oxide in Patent Document 2 as an anode suitable for electroplating using a sulfuric acid electrolyte such as electrolytic copper foil production.
- An anode formed on a conductive substrate has already been disclosed.
- a titanium electrode on which a catalyst layer containing amorphous iridium oxide is formed is also disclosed in Patent Document 3.
- Japanese Patent No. 3654204 Japanese Patent No. 3914162 JP 2007-146215 A JP 2011-26691 A JP 2011-17084 A US Patent Application Publication No. 2009/0288958
- Patent Document 2 an anode for oxygen generation for electrolytic copper plating in which a catalyst layer containing amorphous iridium oxide is formed on a conductive substrate. It has been clarified that it is possible to reduce the anode potential and the electrolysis voltage with respect to oxygen generation during the production of copper foil, and to suppress the precipitation of lead dioxide as a side reaction of the anode.
- an aqueous solution as an electrolytic solution, including the production of electrolytic copper foil
- the anodic potential is further lowered and the electrolysis voltage associated therewith is further increased. Reduction was demanded.
- This invention is made
- the place made into the subject is compared with the lead electrode, the lead alloy electrode, the metal coating electrode, and the metal oxide coating electrode in the electroplating which uses aqueous solution as electrolyte solution.
- the high catalytic properties for the main reaction of the anode and the low potential of the anode make it possible to reduce the electrolysis voltage in electroplating and to reduce the power consumption per unit of metal to be electroplated.
- the cost of the catalyst layer can be used as an anode for the electroplating of metals, compared to metal oxide-coated electrodes used for electroplating, particularly electrodes coated with a conductive substrate with a catalyst layer containing iridium oxide.
- an anode for electroplating that can reduce the cost of the anode.
- the potential of the anode can be reduced.
- the inventor of the present application has used an anode in which a catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide is formed on a conductive substrate, and the same.
- the present inventors have found that the above problems can be solved by electroplating and have completed the present invention.
- the anode for electroplating of the present invention for solving the above problems has the following configuration.
- the anode for electroplating according to claim 1 of the present invention is an anode for electroplating used for electroplating using an aqueous solution as an electrolyte, and a catalyst containing amorphous ruthenium oxide and amorphous tantalum oxide.
- a layer is formed on a conductive substrate.
- Oxygen generation potential is lower than an electrode in which a catalyst layer containing crystalline iridium oxide is formed on a conductive substrate or an electrode in which a catalyst layer containing amorphous iridium oxide is formed on a conductive substrate.
- the electrolysis voltage in electroplating using an aqueous solution as an electrolytic solution is lower than in the case of using other anodes, regardless of the type of metal electroplated at the cathode. It has the effect that it can be reduced.
- ruthenium Since ruthenium is less than 1/3 of the price of iridium, it has a higher catalytic activity than that of a catalyst layer containing amorphous iridium oxide and amorphous tantalum oxide. It can be achieved with a cheaper catalyst layer containing the ruthenium oxide and amorphous tantalum oxide.
- valve metals such as titanium, tantalum, zirconium, niobium, tungsten and molybdenum, and valve metals such as titanium-tantalum, titanium-niobium, titanium-palladium and titanium-tantalum-niobium are mainly used. Alloy, an alloy of valve metal and platinum group metal and / or transition metal, or conductive diamond (for example, boron-doped diamond) is preferable, but is not limited thereto.
- the shape may be various shapes such as a plate, a net, a rod, a sheet, a tube, a line, a porous plate, a porous, a three-dimensional porous body in which true spherical metal particles are combined. Can do.
- a metal other than the valve metal such as iron or nickel or a conductive ceramic surface coated with the above valve metal, alloy, conductive diamond or the like may be used.
- invention of Claim 2 is an anode for electroplating of Claim 1, Comprising:
- the said catalyst layer has a structure which consists of a mixture of an amorphous ruthenium oxide and an amorphous tantalum oxide. ing. With this configuration, in addition to the action obtained in claim 1, (1) Since the catalyst layer is made of a mixture of amorphous ruthenium oxide and amorphous tantalum oxide, it has an effect that durability applicable to electroplating using an aqueous solution as an electrolytic solution is obtained.
- Patent Document 5 as one of comparative examples, it is disclosed that the durability in a sulfuric acid solution of a coating layer containing ruthenium and tantalum obtained by thermal decomposition at 480 ° C. is extremely low. However, such a result is a problem that occurs when crystalline ruthenium oxide is obtained as obtained by performing thermal decomposition at a temperature of at least 350 ° C. or higher.
- the inventor of the present application uses an anode in which a catalyst layer in a state in which ruthenium oxide is made amorphous in a mixture with amorphous tantalum oxide is used for electroplating using an aqueous solution as an electrolyte. As an anode, it discovered that the problem of durability like patent document 5 was not produced.
- a precursor solution containing ruthenium and tantalum is applied on the conductive substrate, and then a predetermined temperature is applied.
- Various physical vapor deposition methods such as sputtering and CVD, chemical vapor deposition, and the like can be used in addition to the thermal decomposition method in which the heat treatment is performed. Further, among the methods for producing the electroplating anode of the present invention, a production method by a thermal decomposition method will be described in particular.
- ruthenium and tantalum such as inorganic compounds, organic compounds, ions, and complexes
- a precursor solution containing various forms of ruthenium and tantalum such as inorganic compounds, organic compounds, ions, and complexes
- the titanium substrate A catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide is formed thereon.
- the thermal decomposition temperature is 300 ° C.
- a catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide is formed. Further, when the precursor solution is applied and then thermally decomposed at 280 ° C., a catalyst layer made of a mixture of amorphous ruthenium oxide and amorphous tantalum oxide is formed.
- the molar ratio of ruthenium and tantalum in the catalyst layer of the electroplating anode of the present invention is not limited to the above range.
- the molar ratio of ruthenium and tantalum contained in the precursor solution applied to the titanium substrate If the precursor solution contains a metal component other than ruthenium and tantalum, the catalyst layer also depends on the type of the metal component and the molar ratio in all metal components contained in the precursor solution. Whether it contains amorphous ruthenium oxide and amorphous tantalum oxide varies.
- the range of the thermal decomposition temperature at which a catalyst layer containing ruthenium oxide and amorphous tantalum oxide is obtained tends to be widened.
- the conditions for forming a catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide include the preparation method and materials of the precursor solution, for example, the precursor It also varies depending on the ruthenium and tantalum raw materials used in the preparation of the solution, the type of solvent, and the type and concentration of additives added to promote thermal decomposition.
- the conditions for forming the catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide by the thermal decomposition method are the butanol solvent in the thermal decomposition method described above. Is not limited to the molar ratio of ruthenium and tantalum and the range of the thermal decomposition temperature associated therewith, the above conditions are merely examples thereof, and the method for producing an anode for electroplating of the present invention is described above. In all methods other than those described above, any method can be used as long as a catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide can be formed on the conductive substrate.
- such a method naturally includes a method involving heat treatment in the process of preparing the precursor solution as disclosed in Patent Document 6.
- a diffraction peak corresponding to ruthenium oxide or tantalum oxide is not observed by a commonly used X-ray diffraction method, Or you can know by being broad.
- the invention according to claim 3 is the anode for electroplating according to claim 1 or 2, wherein the catalyst layer has a configuration in which the molar ratio of ruthenium and tantalum is 50:50. With this configuration, in addition to the action obtained in claim 1 or 2, (1) This composition has an effect of excellent catalytic properties for both oxygen generation and chlorine generation.
- the invention according to claim 4 is the anode for electroplating according to any one of claims 1 to 3, wherein an intermediate layer is formed between the catalyst layer and the conductive substrate. It has a configuration. With this configuration, in addition to the action obtained in any one of claims 1 to 3, (1) By forming an intermediate layer between the catalyst layer and the conductive substrate and simultaneously covering the surface of the conductive substrate, even if the electrolyte solution penetrates into the catalyst layer, the electrolyte solution is conductive substrate Therefore, the conductive substrate is not corroded by the electrolytic solution, and the corrosion product prevents the current from flowing smoothly between the conductive substrate and the catalyst layer.
- the catalyst layer containing amorphous ruthenium oxide and amorphous tantalum oxide Compared to the catalyst layer, oxygen generation and chlorine generation do not occur preferentially in the intermediate layer even when the electrolyte penetrates into the catalyst layer and reaches the intermediate layer because the catalytic activity for the main reaction of the anode is low. Therefore, it has higher durability than the catalyst layer, and thus has an effect of protecting the conductive substrate. At the same time, by coating the conductive substrate with such a more durable oxide or composite oxide, it is possible to suppress the corrosion of the conductive substrate due to the electrolytic solution compared to the case where there is no intermediate layer. Has an effect.
- the intermediate layer has a lower catalytic activity for the main reaction of the anode than the catalyst layer, but sufficiently covers the conductive substrate, and has an action of suppressing corrosion of the conductive substrate,
- examples thereof include metals, alloys, carbon-based materials such as boron-doped diamond (conductive diamond), metal compounds such as oxides and sulfides, and composite compounds such as metal composite oxides.
- a thin film of tantalum, niobium, or the like is preferable for a metal
- an alloy of tantalum, niobium, tungsten, molybdenum, titanium, platinum, or the like is preferable for an alloy.
- an intermediate layer using a carbon-based material such as boron-doped diamond (conductive diamond) has a similar action.
- the intermediate layer made of the above metal, alloy, or carbon-based material is formed by various methods such as a thermal decomposition method, a sputtering method, a CVD method, various physical vapor deposition methods, a chemical vapor deposition method, a hot dipping method, and an electroplating method. be able to.
- a metal compound such as oxide or sulfide, or a metal composite oxide
- an intermediate layer made of an oxide containing crystalline iridium oxide is suitable.
- the catalyst layer is produced by a thermal decomposition method, it is advantageous in terms of simplifying the anode production process to form an intermediate layer made of an oxide or a composite oxide by the same thermal decomposition method.
- the invention according to claim 5 is the anode for electroplating according to claim 4, wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum, or an alloy of any of these metals. It has the composition which becomes. With this configuration, in addition to the effects obtained in claim 4, (1) By using the above-mentioned metal or alloy for the intermediate layer, it has an effect that the corrosion of the conductive substrate can be effectively suppressed. (2)
- the intermediate layer can be formed by various methods such as a thermal decomposition method, a sputtering method, a CVD method and various physical vapor deposition methods, chemical vapor deposition methods, hot dipping methods, and electroplating methods, and is excellent in mass productivity.
- the invention according to claim 6 is the anode for electroplating according to claim 4, wherein the intermediate layer has a structure containing crystalline iridium oxide and amorphous tantalum oxide.
- the intermediate layer containing crystalline iridium oxide and amorphous tantalum oxide is applied by a thermal decomposition method in which a precursor solution containing iridium and tantalum is applied on a conductive substrate and then heat-treated at a predetermined temperature. It can be produced by various physical vapor deposition methods such as sputtering and CVD, and chemical vapor deposition.
- a thermal decomposition method an intermediate layer made of crystalline iridium oxide and amorphous tantalum oxide obtained by thermally decomposing a precursor solution containing iridium and tantalum at a temperature of 400 ° C. to 550 ° C. is suitable. It is.
- the invention according to claim 7 is the anode for electroplating according to claim 4, wherein the intermediate layer includes a composite oxide of crystalline ruthenium and titanium.
- the intermediate layer containing crystalline ruthenium and titanium composite oxide has high durability against chlorine generation, and the ruthenium oxide in the catalyst layer and the composite oxide in the intermediate layer belong to the same crystal system. Since the distance is short, the adhesion between the catalyst layer and the catalyst layer formed on the intermediate layer is good. Therefore, when the main reaction of the anode is chlorine generation, the durability is particularly improved.
- the intermediate layer containing a crystalline ruthenium-titanium composite oxide is formed by applying a precursor solution containing ruthenium and titanium on a conductive substrate and then heat-treating at a predetermined temperature, as well as sputtering. It can be produced by various physical vapor deposition methods such as the CVD method and chemical vapor deposition method.
- a precursor solution containing ruthenium and titanium on a conductive substrate and then heat-treating at a predetermined temperature, as well as sputtering.
- It can be produced by various physical vapor deposition methods such as the CVD method and chemical vapor deposition method.
- an intermediate layer made of a composite oxide of crystalline ruthenium and titanium obtained by thermally decomposing a precursor solution containing ruthenium and titanium at a temperature of 450 ° C. to 550 ° C. is suitable. .
- the invention according to claim 8 is the anode for electroplating according to claim 4, wherein the intermediate layer includes a crystalline ruthenium oxide and an amorphous tantalum oxide.
- the intermediate layer containing crystalline ruthenium oxide and amorphous tantalum oxide has high durability against chlorine generation, and ruthenium oxide in the catalyst layer and ruthenium oxide in the intermediate layer belong to the same crystal system, Since the interatomic distance is short, the adhesion between the catalyst layer and the catalyst layer formed on the intermediate layer is good. Therefore, when the main reaction of the anode is chlorine generation, the durability is particularly improved. .
- the intermediate layer containing crystalline ruthenium oxide and amorphous tantalum oxide is applied by a thermal decomposition method in which a precursor solution containing ruthenium and tantalum is applied on a conductive substrate and then heat-treated at a predetermined temperature. It can be produced by various physical vapor deposition methods such as sputtering and CVD, and chemical vapor deposition.
- thermal decomposition an intermediate layer made of crystalline ruthenium oxide and amorphous tantalum oxide obtained by thermally decomposing a precursor solution containing ruthenium and tantalum at a temperature of 400 ° C. to 550 ° C. is suitable. It is.
- the invention according to claim 9 is the anode for electroplating according to claim 4, wherein the intermediate layer is a conductive diamond.
- the intermediate layer is made of conductive diamond, the corrosion resistance to the acidic aqueous solution is very high, and therefore has an effect that corrosion of the conductive substrate can be particularly effectively suppressed.
- the invention according to claim 10 is the anode for electroplating according to any one of claims 1 to 9, wherein the metal to be electroplated is copper, zinc, tin, nickel, cobalt, lead, It has a configuration that is any one of chromium, indium, platinum, silver, iridium, ruthenium, and palladium. With this configuration, in addition to the action obtained in any one of claims 1 to 9, (1) Since the potential for oxygen generation is low, the electrolysis voltage in electroplating can be reduced, reducing the basic unit of power consumption for the metal to be electroplated, and can be used as an anode for electroplating of various types of metals It has the effect of being possible and excellent in versatility.
- the electroplating method according to an eleventh aspect of the present invention is an electroplating method using an aqueous solution as an electrolytic solution, and is desired to use the electroplating anode according to any one of the first to ninth aspects. It has the structure which electroplates a metal. With this configuration, (1) In the electroplating method using an aqueous solution as the electrolyte, the potential and electrolysis voltage of the anode for electroplating are low, and it is possible to reduce the basic unit of power consumption of electroplating, and the initial cost for the anode for electroplating In addition, the maintenance cost is low, and the overall cost of electroplating can be reduced.
- the invention according to claim 12 is the electroplating method according to claim 11, wherein the metal to be electroplated is copper, zinc, tin, nickel, cobalt, lead, chromium, indium, platinum, silver, iridium , Ruthenium, or palladium.
- the metal to be electroplated is copper, zinc, tin, nickel, cobalt, lead, chromium, indium, platinum, silver, iridium , Ruthenium, or palladium.
- the following effects can be obtained. 1) In electroplating using an aqueous solution as an electrolyte, the potential of the anode can be lowered compared to the conventional case, so that the electrolysis voltage of electroplating can be reduced regardless of the type of metal to be electroplated. This has the effect of greatly reducing the power consumption basic unit. 2) In addition, since the potential of the anode can be lowered as compared with the conventional case, it is possible to suppress various side reactions that may occur on the anode, and the electrolysis voltage rises in long-term electroplating. It has the effect that it can suppress.
- the cost of the catalyst layer is reduced by using ruthenium oxide and the thermal decomposition temperature is low as compared with the conventional titanium electrode on which the catalyst layer containing iridium oxide is formed.
- the cost in the layer forming process is also reduced.
- the electroplating of various metals has the effect that the production cost of the entire electroplating can be greatly reduced.
- Example 1 A commercially available titanium plate (length 5 cm, width 1 cm, thickness 1 mm) was immersed in a 10% oxalic acid solution at 90 ° C. for 60 minutes for etching treatment, washed with water, and dried. Next, in a butanol (n-C 4 H 9 OH) solution containing 6 vol% concentrated hydrochloric acid, the molar ratio of ruthenium and tantalum is 50:50, and the total of ruthenium and tantalum is 50 g / L in terms of metal.
- a butanol (n-C 4 H 9 OH) solution containing 6 vol% concentrated hydrochloric acid
- This coating solution was applied to the dried titanium plate, dried at 120 ° C. for 10 minutes, and then thermally decomposed in an electric furnace maintained at 280 ° C. for 20 minutes. This application, drying, and thermal decomposition were repeated a total of 7 times to produce an electroplating anode of Example 1 in which a catalyst layer was formed on a titanium plate as a conductive substrate.
- a saturated aqueous potassium chloride solution was placed in a container separate from the electrolytic solution, and a commercially available silver-silver chloride electrode was immersed in the container as a reference electrode.
- This potassium chloride saturated aqueous solution and the electrolytic solution were connected using a salt bridge and a Lugin tube to prepare a three-electrode electrochemical measurement cell.
- electrogalvanization on the cathode by flowing an electrolytic current of either current density 10 mA / cm 2 or 20 mA / cm 2 on the basis of the electrode area of the electroplating anode between the anode for electroplating and the cathode.
- the potential of the anode for electroplating with respect to the reference electrode was measured.
- the temperature of electrolyte solution was 40 degreeC using the constant temperature water tank.
- Example 1 A commercially available titanium plate (length 5 cm, width 1 cm, thickness 1 mm) was immersed in a 10% oxalic acid solution at 90 ° C. for 60 minutes for etching treatment, washed with water, and dried. Next, in a butanol (n-C 4 H 9 OH) solution containing 6 vol% concentrated hydrochloric acid, the molar ratio of iridium and tantalum is 50:50, and the total of iridium and tantalum is 70 g / L in terms of metal.
- a coating solution was prepared by adding chloroiridium acid hexahydrate (H 2 IrCl 6 .6H 2 O) and tantalum chloride (TaCl 5 ).
- This coating solution was applied to the dried titanium plate, dried at 120 ° C. for 10 minutes, and then thermally decomposed in an electric furnace maintained at 360 ° C. for 20 minutes. This application, drying, and thermal decomposition were repeated 5 times in total to produce an electroplating anode of Comparative Example 1 in which a catalyst layer was formed on a titanium plate as a conductive substrate.
- Example 2 Using the same electrolytic solution and electrochemical measurement cell as in Example 1, except that the electroplating anode of Comparative Example 1 was used instead of the electroplating anode of Example 1, the other conditions were the same, While carrying out electrogalvanization on the cathode by flowing an electrolytic current of either current density 10 mA / cm 2 or 20 mA / cm 2 on the basis of the electrode area of the electroplating anode between the anode for electroplating and the cathode, The potential of the anode for electroplating with respect to the reference electrode was measured.
- Table 1 shows the anodic potential when electrolytic galvanizing was performed using the electroplating anodes of Example 1 and Comparative Example 1.
- the electroplating anode of Example 1 in which a catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide was used in electrogalvanization, it was amorphous.
- the electrolysis voltage was 0.04 V to 0.05 V lower than that in the case of using the anode for electroplating of Comparative Example 1 in which the catalyst layer made of iridium oxide and amorphous tantalum oxide was formed. That is, the anode for electroplating (Example 1) in which the catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide is formed is the catalyst layer made of amorphous iridium oxide and amorphous tantalum oxide. It was found that the anode potential was lower than that of the electroplating anode (Comparative Example 1) on which the electroplating was formed, and the electrolysis voltage of electrogalvanization could be reduced.
- Table 2 shows the anode potential when electrolytic copper plating was performed using the electroplating anodes of Example 2 and Comparative Example 2.
- the electroplating anode of Example 2 in which a catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide was used in electrolytic copper plating, it was amorphous.
- the electrolysis voltage was 0.09 V to 0.10 V lower than that of the electroplating anode of Comparative Example 2 in which the catalyst layer made of iridium oxide and amorphous tantalum oxide was formed.
- the anode for electroplating (Example 2) in which the catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide is formed is the catalyst layer made of amorphous iridium oxide and amorphous tantalum oxide. It was found that the anode potential was lower than that of the electroplating anode (Comparative Example 2) on which the electroplating was formed, and the electrolytic voltage of the electrocopper plating could be reduced.
- Table 3 shows the anode potential when electronickel plating was performed using the electroplating anodes of Example 3 and Comparative Example 3.
- the electrolysis voltage was 0.15 V lower than when the electroplating anode of Comparative Example 3 in which the catalyst layer made of iridium oxide and amorphous tantalum oxide was used. That is, the anode for electroplating (Example 3) in which a catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide is formed is a catalyst layer made of amorphous iridium oxide and amorphous tantalum oxide. It was found that the anode potential was lower than that of the electroplating anode (Comparative Example 3) on which the electroplating was formed, and the electrolysis voltage of electronickel plating could be reduced.
- the anode potential when electroplating was performed using the electroplating anode of Example 4 was 0.95 V when the current density was 10 mA / cm 2 and 1.24 V when the current density was 20 mA / cm 2 .
- the anode potential was also measured for the electroplating anode of Comparative Example 4, but the potential was not stable immediately after the start of energization, and the potential rapidly increased and a stable anode potential could not be measured. It was.
- the anode for electroplating was taken out of the electrolytic solution after measuring the anode potential in Comparative Example 4, it was found that a change in the form of the catalyst layer on the titanium plate was observed and the catalyst layer was deteriorated.
- Table 4 shows the anode potential when electrotin plating was performed using the electroplating anodes of Example 5 and Comparative Example 5.
- Example 5 As shown in Table 4, in the case of using the electroplating anode of Example 5 in which a catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide was used in electrotin plating, it was amorphous.
- the electrolysis voltage was 0.22 V lower than that in the case of using the anode for electroplating of Comparative Example 5 in which the catalyst layer made of iridium oxide and amorphous tantalum oxide was formed. That is, the anode for electroplating (Example 5) on which a catalyst layer made of amorphous ruthenium oxide and amorphous tantalum oxide was formed was a catalyst layer made of amorphous iridium oxide and amorphous tantalum oxide. It was found that the anode potential was lower than that of the electroplating anode (Comparative Example 5) on which the electroplating was formed, and the electrolysis voltage of electrotin plating could be reduced.
- the present invention has higher catalytic properties for the main reaction of the anode and lower potential of the anode than lead electrodes, lead alloy electrodes, metal-coated electrodes, and metal oxide-coated electrodes.
- the present invention provides an anode for electroplating that can reduce the cost of the catalyst layer and the cost of the anode as compared with a metal oxide-coated electrode, particularly an electrode in which a conductive substrate is coated with a catalyst layer containing iridium oxide.
- the potential of the anode and the electrolysis voltage are low, so it is possible to reduce the power consumption per unit of electroplating.
- initial cost and maintenance cost according to the anode is low, thus it is possible to provide an electroplating method capable of reducing the overall cost of electroplating.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
Description
本発明の請求項1に記載の電気めっき用陽極は、水溶液を電解液とする電気めっきに用いられる電気めっき用陽極であって、非晶質の酸化ルテニウムと非晶質の酸化タンタルを含む触媒層を導電性基体上に形成した構成を有している。
この構成により、
(1)非晶質の酸化ルテニウムと非晶質の酸化タンタルを含む触媒層は、水溶液を電解液とする電気めっきでの酸素発生および塩素発生に対して、選択的に高い触媒活性を示し、陽極の電位が著しく低くなるという作用を有する。
(2)結晶質の酸化イリジウムを含む触媒層を導電性基体上に形成した電極や、非晶質の酸化イリジウムを含む触媒層を導電性基体上に形成した電極よりも酸素発生の電位が低く、同時に副反応を抑制でき、触媒活性が高いため、陰極で電気めっきされる金属の種類によらず、水溶液を電解液とする電気めっきにおいて、他の陽極を用いる場合に比べて、電解電圧を低減することができるという作用を有する。
(3)非晶質の酸化イリジウムを含む触媒層を形成した陽極、特に非晶質の酸化イリジウムと非晶質の酸化タンタルを含む触媒層を形成した陽極を用いて電気めっきを行う場合よりも、さらに陽極の電位を低下させることが可能で、電解電圧を低減できるという、極めて特異な作用を有する。
(4)酸素発生に対する陽極の電位が低くなり、酸素発生が他の副反応に対して優先されることによって、二酸化鉛などの陽極での析出及び蓄積といった副反応が抑制されるという作用を有する。
(5)ルテニウムはイリジウムに比べて1/3以下の価格であることから、非晶質の酸化イリジウムと非晶質の酸化タンタルを含む触媒層の触媒活性以上の高い触媒活性を、非晶質の酸化ルテニウムと非晶質の酸化タンタルを含むより安価な触媒層で達成することができるという作用を有する。
この構成により、請求項1で得られる作用に加え、
(1)触媒層が、非晶質の酸化ルテニウムと非晶質の酸化タンタルとの混合物からなることによって、水溶液を電解液とする電気めっきに応用可能な耐久性が得られるという作用を有する。
この構成により、請求項1または2で得られる作用に加え、
(1)この組成において、特に酸素発生と塩素発生の両方に対する触媒性が優れるという作用を有する。
この構成により、請求項1乃至3の内いずれか1項で得られる作用に加え、
(1)触媒層と導電性基体の間に中間層が形成され、同時に導電性基体の表面を被覆していることによって、触媒層中に電解液が浸透しても、電解液が導電性基体に到達することを防止し、したがって導電性基体が電解液によって腐食することがなく、腐食生成物によって導電性基体と触媒層の間で電流が円滑に流れなくなることを抑制するという作用を有する。
(2)本発明の電気めっき用陽極の触媒層とは異なる酸化物や複合酸化物からなる中間層を形成した場合は、非晶質の酸化ルテニウムと非晶質の酸化タンタルを含む触媒層に比べて陽極の主反応に対する触媒活性が低いため、触媒層中を電解液が浸透して中間層に至った場合でも、中間層では酸素発生や塩素発生が触媒層に比べて優先的に起こらないことから、触媒層よりも耐久性が高く、よって導電性基体を保護する作用を有する。同時に、このような耐久性のより高い酸化物または複合酸化物が導電性基体を被覆することで、中間層がない場合に比べて、電解液による導電性基体の腐食を抑制することができるという作用を有する。
この構成により、請求項4で得られる作用に加え、
(1)上記の金属または合金を中間層に用いることで、導電性基体の腐食を効果的に抑制することができるという作用を有する。
(2)熱分解法、スパッタリング法やCVD法など各種の物理蒸着法や化学蒸着法、溶融めっき法、電気めっき法などの様々な方法により中間層を形成することができ、量産性に優れる。
この構成により、請求項4で得られる作用に加え、
(1)酸素発生に対する耐久性が高く、また触媒層中の酸化ルテニウムと中間層中の酸化イリジウムが同じ結晶系に属し、原子間距離が近いことから、中間層上に形成される触媒層との間の密着性がよく、よって、陽極の主反応が酸素発生である場合に、耐久性が特に向上するという作用を有する。
この構成により、請求項4で得られる作用に加え、
(1)結晶質のルテニウムとチタンの複合酸化物を含む中間層は、塩素発生に対する耐久性が高く、また触媒層中の酸化ルテニウムと中間層中の複合酸化物が同じ結晶系に属し、原子間距離が近いことから、中間層上に形成される触媒層との間の密着性がよく、よって、陽極の主反応が塩素発生である場合に、耐久性が特に向上するという作用を有する。
この構成により、請求項4で得られる作用に加え、
(1)結晶質の酸化ルテニウムと非晶質の酸化タンタルを含む中間層は、塩素発生に対する耐久性が高く、また触媒層中の酸化ルテニウムと中間層中の酸化ルテニウムが同じ結晶系に属し、原子間距離が近いことから、中間層上に形成される触媒層との間の密着性がよく、よって、陽極の主反応が塩素発生である場合に、耐久性が特に向上するという作用を有する。
この構成により、請求項4で得られる作用に加え、
(1)中間層が導電性ダイヤモンドであることにより、酸性水溶液に対する耐食性が非常に高いため、導電性基体の腐食を特に効果的に抑制できるという作用を有する。
この構成により、請求項1乃至9の内いずれか1項で得られる作用に加え、
(1)酸素発生の電位が低いので、電気めっきにおける電解電圧を低下させて、電気めっきされる金属に対する電力量原単位を削減することができ、様々な種類の金属の電気めっきの陽極として利用可能で汎用性に優れるという作用を有する。
この構成により、
(1)水溶液を電解液とする電気めっき法において、電気めっき用陽極の電位および電解電圧が低く、電気めっきの電力量原単位を低減することが可能で、かつ電気めっき用陽極にかかる初期コスト及び維持コストも低く、電気めっき全体のコストを低減できるという作用を有する。
この構成により、請求項11で得られる作用に加え、
(1)電解電圧が低く、長期間の電気めっきにおいても低い電解電圧が維持され、目的とする金属を電気めっきするための電力量原単位が小さくなり、副反応の影響による電気めっき用陽極の寿命及び耐久性の低下がなく、長期間、安定して目的とする金属を電気めっきすることができ、電気めっきの効率性、安定性に優れるという作用を有する。
1)水溶液を電解液とする電気めっきにおいて、従来に比べて、陽極の電位を低くすることができることから、電気めっきする金属の種類に関わらず、電気めっきの電解電圧を低減することが可能となり、これによって電力量原単位を大幅に削減できるという効果を有する。
2)また、従来に比べて、陽極の電位を低くすることができることから、陽極上で生じる可能性がある様々な副反応を抑制することが可能となり、長期間の電気めっきにおいて電解電圧の上昇を抑制することができるという効果を有する。
3)上記の効果とともに、副反応によって陽極上に析出及び蓄積する酸化物やその他の化合物を取り除く作業が必要なくなる、またはその作業が軽減されることから、このような作業による陽極のダメージが抑制され、したがって陽極の寿命が長くなるという効果を有する。
4)上記の効果とともに、副反応によって陽極上に析出及び蓄積した酸化物やその他の化合物を取り除く作業が不要、または少なくなることから、電気めっきにおける陽極のメンテナンス及び交換が抑制または軽減されるという効果を有する。また、このような除去作業が不要となる或いは少なくなることによって、電気めっきを休止する必要性が抑えられるため、連続的かつより安定した電気めっきが可能になるという効果を有する。
5)上記の効果とともに、陽極上への析出物が抑制されることにより、析出物によって陽極の有効表面積が制限されることや陽極での電解可能な面積が不均一となることを防ぐことができ、陰極上に金属が不均一に電気めっきされ、電気めっきで得られる金属膜または金属箔の平滑性が乏しい或いは密度が低いといった品質低下が発生することを抑制することができるという効果を有する。
6)また、上記のような理由で陰極上で不均一に成長した金属が、陽極に達してショートし、電気めっきができなくなることを防止することができるという効果を有する。また、陰極上で金属が不均一にかつデンドライト成長することが抑制されるため、陽極と陰極の極間距離を短くすることができ、電解液のオーム損による電解電圧の増加を抑制できるという効果を有する。
7)また、上記のように、副反応で生じる陽極上への析出物による様々な問題が解消されることによって、安定で連続的な電気めっきが可能になり、電気めっきにおける保守及び管理作業を低減することができるとともに、電気めっきされる金属の製品管理が容易になるという効果を有する。また、長期間の電気めっきにおける陽極のコストを低減できるという効果を有する。
8)また、本発明によれば、従来の酸化イリジウムを含む触媒層を形成したチタン電極に比べて、酸化ルテニウムを用いることにより触媒層のコストが削減され、また熱分解温度が低いことから触媒層の形成工程におけるコストも削減されるという効果を有する。
9)上記の効果とともに、様々な金属の電気めっきにおいて、電気めっき全体の生産コストを大幅に低減できるという効果を有する。
(実施例1)
市販のチタン板(長さ5cm、幅1cm、厚さ1mm)を10%のシュウ酸溶液中に90℃で60分間浸漬してエッチング処理を行った後、水洗し、乾燥した。次に、6vol%の濃塩酸を含むブタノール(n-C4H9OH)溶液に、ルテニウムとタンタルのモル比が50:50で、ルテニウムとタンタルの合計が金属換算で50g/Lとなるように三塩化ルテニウム三水和物(RuCl3・3H2O)と五塩化タンタル(TaCl5)を添加した塗布液を調製した。この塗布液を上記乾燥後のチタン板に塗布し、120℃で10分間乾燥し、次いで280℃に保持した電気炉内で20分間熱分解した。この塗布、乾燥、熱分解を計7回繰り返し行い、導電性基体であるチタン板上に触媒層を形成した実施例1の電気めっき用陽極を作製した。
市販のチタン板(長さ5cm、幅1cm、厚さ1mm)を10%のシュウ酸溶液中に90℃で60分間浸漬してエッチング処理を行った後、水洗し、乾燥した。次に、6vol%の濃塩酸を含むブタノール(n-C4H9OH)溶液に、イリジウムとタンタルのモル比が50:50でイリジウムとタンタルの合計が金属換算で70g/Lとなるように塩化イリジウム酸六水和物(H2IrCl6・6H2O)と塩化タンタル(TaCl5)を添加した塗布液を調製した。この塗布液を上記乾燥後のチタン板に塗布し、120℃で10分間乾燥し、次いで360℃に保持した電気炉内で20分間熱分解した。この塗布、乾燥、熱分解を計5回繰り返し行い、導電性基体であるチタン板上に触媒層を形成した比較例1の電気めっき用陽極を作製した。
(実施例2)
実施例1における電解液を、市販の電気銅めっき浴(マルイ鍍金工業製、銅濃度 約91g/L、pH=6.6)に変えたことを除いて、他の条件は実施例1と同じとして、電気銅めっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
比較例1における電解液を、市販の電気銅めっき浴(マルイ鍍金工業製、銅濃度 約91g/L、pH=6.6)に変えたことを除いて、他の条件は比較例1と同じとして、電気銅めっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
(実施例3)
実施例1における電解液を、市販の電気ニッケルめっき浴(マルイ鍍金工業製、ニッケル塩18%、pH=7.7)に変えたことを除いて、他の条件は実施例1と同じとして、電気ニッケルめっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
比較例1における電解液を、市販の電気ニッケルめっき浴(マルイ鍍金工業製、ニッケル塩18%、pH=7.7)に変えたことを除いて、他の条件は比較例1と同じとして、電気ニッケルめっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
(実施例4)
実施例1における電解液を、市販の電気白金めっき浴(マルイ鍍金工業製、白金化合物約2%、水酸化カリウム約1.5%、pH=12.2)に変えたことを除いて、他の条件は実施例1と同じとして、電気白金めっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
比較例1における電解液を、市販の電気白金めっき浴(マルイ鍍金工業製、白金化合物約2%、水酸化カリウム約1.5%、pH=12.2)に変えたことを除いて、他の条件は比較例1と同じとして、電気白金めっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
(実施例5)
実施例1における電解液を、市販の電気スズめっき浴(マルイ鍍金工業製、pH=0.13)とし、温度を25℃に変えたことを除いて、他の条件は実施例1と同じとして、電気スズめっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
比較例1における電解液を、市販の電気スズめっき浴(マルイ鍍金工業製、pH=0.13)とし、温度を25℃に変えたことを除いて、他の条件は比較例1と同じとして、電気ニッケルめっきを行いながら、参照極に対する電気めっき用陽極の電位を測定した。
Claims (12)
- 水溶液を電解液とする電気めっきに用いられる電気めっき用陽極であって、非晶質の酸化ルテニウムと非晶質の酸化タンタルを含む触媒層を導電性基体上に形成したものであることを特徴とする電気めっき用陽極。
- 前記触媒層が、非晶質の酸化ルテニウムと非晶質の酸化タンタルとの混合物からなることを特徴とする請求項1に記載の電気めっき用陽極。
- 前記触媒層におけるルテニウムとタンタルのモル比が50:50であることを特徴とする請求項1または2に記載の電気めっき用陽極。
- 前記触媒層と前記導電性基体の間に、中間層が形成されていることを特徴とする請求項1~3のいずれかに記載の電気めっき用陽極。
- 前記中間層が、タンタル、ニオブ、タングステン、モリブデン、チタン、白金、またはこれらのいずれかの金属の合金からなることを特徴とする請求項4に記載の電気めっき用陽極。
- 前記中間層が、結晶質の酸化イリジウムと非晶質の酸化タンタルを含むことを特徴とする請求項4に記載の電気めっき用陽極。
- 前記中間層が、結晶質のルテニウムとチタンの複合酸化物を含むことを特徴とする請求項4に記載の電気めっき用陽極。
- 前記中間層が、結晶質の酸化ルテニウムと非晶質の酸化タンタルを含むことを特徴とする請求項4に記載の電気めっき用陽極。
- 前記中間層が、導電性ダイヤモンドであることを特徴とする請求項4に記載の電気めっき用陽極。
- 電気めっきされる金属が、銅、亜鉛、スズ、ニッケル、コバルト、鉛、クロム、インジウム、白金、銀、イリジウム、ルテニウム、パラジウムのうち、いずれか1つであることを特徴とする請求項1~9のいずれかに記載の電気めっき用陽極。
- 水溶液を電解液とする電気めっき法であって、請求項1~9のいずれかに記載の電気めっき用陽極を用いて所望の金属を電気めっきすることを特徴とする電気めっき法。
- 電気めっきされる金属が、銅、亜鉛、スズ、ニッケル、コバルト、鉛、クロム、インジウム、白金、銀、イリジウム、ルテニウム、パラジウムのうち、いずれか1つであることを特徴とする請求項11に記載の電気めっき法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/344,675 US9556534B2 (en) | 2011-09-13 | 2012-08-13 | Anode for electroplating and method for electroplating using anode |
CN201280044501.9A CN103827360B (zh) | 2011-09-13 | 2012-08-31 | 电镀用阳极及使用该阳极的电镀法 |
KR1020147009717A KR101577669B1 (ko) | 2011-09-13 | 2012-08-31 | 전기 도금용 양극 및 그 양극을 사용하는 전기 도금법 |
EP12831342.6A EP2757181A4 (en) | 2011-09-13 | 2012-08-31 | POSITIVE ELECTRODE FOR ELECTROLYTIC PLATING AND METHOD FOR ELECTROLYTIC PLATING WITH THE POSITIVE ELECTRODE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-199258 | 2011-09-13 | ||
JP2011199258A JP5522484B2 (ja) | 2011-09-13 | 2011-09-13 | 電解めっき用陽極および該陽極を用いる電解めっき法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013038928A1 true WO2013038928A1 (ja) | 2013-03-21 |
Family
ID=47883160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/072237 WO2013038928A1 (ja) | 2011-09-13 | 2012-08-31 | 電解めっき用陽極および該陽極を用いる電解めっき法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9556534B2 (ja) |
EP (1) | EP2757181A4 (ja) |
JP (1) | JP5522484B2 (ja) |
KR (1) | KR101577669B1 (ja) |
CN (1) | CN103827360B (ja) |
WO (1) | WO2013038928A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103539230A (zh) * | 2013-10-30 | 2014-01-29 | 北京师范大学 | 电催化氧化处理难降解有机废水的阳极板及制备工艺 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10451915B2 (en) | 2014-05-22 | 2019-10-22 | Lg Chem, Ltd. | Polarizing plate with polyethylene terephthalate film as protective film, and method for manufacturing same |
CN108048865B (zh) * | 2017-11-17 | 2020-04-28 | 江苏安凯特科技股份有限公司 | 一种电极及其制备方法和应用 |
CN109023493A (zh) * | 2018-09-11 | 2018-12-18 | 沈阳飞机工业(集团)有限公司 | 一种三价铬电镀用阳极的制备方法 |
CN110462107A (zh) * | 2019-02-15 | 2019-11-15 | 迪普索股份公司 | 锌或锌合金电镀方法和系统 |
KR102305658B1 (ko) * | 2019-08-07 | 2021-09-29 | 서울대학교산학협력단 | 전기화학반응용 전극 구조물 및 이를 포함하는 전기화학반응 시스템 |
CN112663124B (zh) * | 2020-12-18 | 2022-09-09 | 西安泰金工业电化学技术有限公司 | 一种用于pcb水平电镀的贵金属阳极的制备方法 |
CN115537883B (zh) * | 2022-09-20 | 2023-07-04 | 江苏铭丰电子材料科技有限公司 | 电解铜箔制备用IrO2-Ta2O5/Ti电极析氧电位的降低方法 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000110000A (ja) * | 1998-10-01 | 2000-04-18 | De Nora Spa | 電解プロセスにおける酸素発生用アノ―ド |
JP3654204B2 (ja) | 2001-03-15 | 2005-06-02 | ダイソー株式会社 | 酸素発生用陽極 |
JP3914162B2 (ja) | 2003-02-07 | 2007-05-16 | ダイソー株式会社 | 酸素発生用電極 |
JP2007146215A (ja) | 2005-11-25 | 2007-06-14 | Daiso Co Ltd | 酸素発生用電極 |
US20090288958A1 (en) | 2008-05-24 | 2009-11-26 | Phelps Dodge Corporation | Electrochemically active composition, methods of making, and uses thereof |
WO2009151044A1 (ja) * | 2008-06-09 | 2009-12-17 | 学校法人同志社 | 亜鉛およびコバルトの電解採取用陽極、並びに電解採取方法 |
JP2011017084A (ja) | 2003-03-24 | 2011-01-27 | De Nora Tech Inc | 白金族金属を有する電気触媒コーティング及びこれから製造された電極 |
JP2011026691A (ja) | 2009-06-24 | 2011-02-10 | Shinshu Univ | 電解用電極とその製造方法 |
JP2011122183A (ja) * | 2009-12-08 | 2011-06-23 | Doshisha | 金属の電解採取システム、および該システムを用いた電解採取方法 |
JP4916040B1 (ja) * | 2011-03-25 | 2012-04-11 | 学校法人同志社 | 電解採取用陽極および該陽極を用いた電解採取法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5137877A (en) | 1974-09-27 | 1976-03-30 | Asahi Chemical Ind | Denkaiyodenkyoku oyobi sonoseizoho |
IT1151365B (it) * | 1982-03-26 | 1986-12-17 | Oronzio De Nora Impianti | Anodo per procedimenti elettrilitici |
US5982609A (en) | 1993-03-22 | 1999-11-09 | Evans Capacitor Co., Inc. | Capacitor |
JP4516618B2 (ja) * | 2008-06-23 | 2010-08-04 | 学校法人同志社 | コバルトの電解採取用陽極および電解採取法 |
US8679246B2 (en) * | 2010-01-21 | 2014-03-25 | The University Of Connecticut | Preparation of amorphous mixed metal oxides and their use as feedstocks in thermal spray coating |
-
2011
- 2011-09-13 JP JP2011199258A patent/JP5522484B2/ja not_active Expired - Fee Related
-
2012
- 2012-08-13 US US14/344,675 patent/US9556534B2/en active Active
- 2012-08-31 EP EP12831342.6A patent/EP2757181A4/en not_active Withdrawn
- 2012-08-31 CN CN201280044501.9A patent/CN103827360B/zh not_active Expired - Fee Related
- 2012-08-31 WO PCT/JP2012/072237 patent/WO2013038928A1/ja active Application Filing
- 2012-08-31 KR KR1020147009717A patent/KR101577669B1/ko active IP Right Grant
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000110000A (ja) * | 1998-10-01 | 2000-04-18 | De Nora Spa | 電解プロセスにおける酸素発生用アノ―ド |
JP3654204B2 (ja) | 2001-03-15 | 2005-06-02 | ダイソー株式会社 | 酸素発生用陽極 |
JP3914162B2 (ja) | 2003-02-07 | 2007-05-16 | ダイソー株式会社 | 酸素発生用電極 |
JP2011017084A (ja) | 2003-03-24 | 2011-01-27 | De Nora Tech Inc | 白金族金属を有する電気触媒コーティング及びこれから製造された電極 |
JP2007146215A (ja) | 2005-11-25 | 2007-06-14 | Daiso Co Ltd | 酸素発生用電極 |
US20090288958A1 (en) | 2008-05-24 | 2009-11-26 | Phelps Dodge Corporation | Electrochemically active composition, methods of making, and uses thereof |
WO2009151044A1 (ja) * | 2008-06-09 | 2009-12-17 | 学校法人同志社 | 亜鉛およびコバルトの電解採取用陽極、並びに電解採取方法 |
JP2011026691A (ja) | 2009-06-24 | 2011-02-10 | Shinshu Univ | 電解用電極とその製造方法 |
JP2011122183A (ja) * | 2009-12-08 | 2011-06-23 | Doshisha | 金属の電解採取システム、および該システムを用いた電解採取方法 |
JP4916040B1 (ja) * | 2011-03-25 | 2012-04-11 | 学校法人同志社 | 電解採取用陽極および該陽極を用いた電解採取法 |
Non-Patent Citations (2)
Title |
---|
See also references of EP2757181A4 |
YONG-YI CHEN: "Phase Structure and Microstructure of a Nanoscale Ti02-Ru02-Ir02- Ta205 Anode Coating on Titanium", JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 91, no. ISSUE, December 2008 (2008-12-01), pages 4154 - 4157, XP055153819 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103539230A (zh) * | 2013-10-30 | 2014-01-29 | 北京师范大学 | 电催化氧化处理难降解有机废水的阳极板及制备工艺 |
CN103539230B (zh) * | 2013-10-30 | 2015-01-28 | 北京师范大学 | 电催化氧化处理难降解有机废水的阳极板及制备工艺 |
Also Published As
Publication number | Publication date |
---|---|
CN103827360B (zh) | 2016-04-27 |
JP5522484B2 (ja) | 2014-06-18 |
KR101577669B1 (ko) | 2015-12-15 |
CN103827360A (zh) | 2014-05-28 |
US9556534B2 (en) | 2017-01-31 |
JP2013060622A (ja) | 2013-04-04 |
KR20140061528A (ko) | 2014-05-21 |
EP2757181A1 (en) | 2014-07-23 |
EP2757181A4 (en) | 2015-06-17 |
US20150027899A1 (en) | 2015-01-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4916040B1 (ja) | 電解採取用陽極および該陽極を用いた電解採取法 | |
JP5008043B1 (ja) | 塩素発生用陽極 | |
JP5522484B2 (ja) | 電解めっき用陽極および該陽極を用いる電解めっき法 | |
JP4771130B2 (ja) | 酸素発生用電極 | |
JP5616633B2 (ja) | 電解用陽極 | |
EP2287364B1 (en) | Method for electrolytic winning of zinc | |
Shestakova et al. | Novel Ti/Ta2O5-SnO2 electrodes for water electrolysis and electrocatalytic oxidation of organics | |
CA2501229A1 (en) | Coatings for the inhibition of undesirable oxidation in an electrochemical cell | |
JP3914162B2 (ja) | 酸素発生用電極 | |
JP4516618B2 (ja) | コバルトの電解採取用陽極および電解採取法 | |
WO2001000905A1 (en) | Method of producing copper foil | |
JP2019081919A (ja) | 電解法 | |
Khalaf | Influence of the Applied Potential and Temperature on the Electrode position of the Lead Dioxide |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201280044501.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12831342 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14344675 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20147009717 Country of ref document: KR Kind code of ref document: A |