WO2020171509A1 - 전기분해용 전극 - Google Patents
전기분해용 전극 Download PDFInfo
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- WO2020171509A1 WO2020171509A1 PCT/KR2020/002241 KR2020002241W WO2020171509A1 WO 2020171509 A1 WO2020171509 A1 WO 2020171509A1 KR 2020002241 W KR2020002241 W KR 2020002241W WO 2020171509 A1 WO2020171509 A1 WO 2020171509A1
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- electrode
- ruthenium
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- cerium
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- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
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- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
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- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
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- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
- C25B11/056—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of textile or non-woven fabric
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- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
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- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
- C25B11/057—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of a single element or compound
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- 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
- C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
- C25B11/057—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of a single element or compound
- C25B11/061—Metal or alloy
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- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
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- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
- C25B11/057—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of a single element or compound
- C25B11/061—Metal or alloy
- C25B11/063—Valve metal, e.g. titanium
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- 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
- C25B11/093—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 at least one noble metal or noble metal oxide and at least one non-noble metal oxide
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- 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
- C25B11/095—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 at least one of the compounds being organic
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- C—CHEMISTRY; METALLURGY
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- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
- C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Definitions
- the present invention relates to an electrode for electrolysis and a method for manufacturing the same, and to an electrode for electrolysis in which a metal base layer of the electrode is planarized, and a method for manufacturing the same.
- a technology for producing hydroxide, hydrogen and chlorine by electrolyzing inexpensive brine such as seawater is widely known.
- This electrolysis process is commonly referred to as a chlor-alkali process, and it can be said that the performance and reliability of technology have been proven through commercial operation for decades.
- an ion exchange membrane is installed inside the electrolyzer to divide the electrolyzer into a cation chamber and an anion chamber, and the ion exchange membrane method that obtains chlorine gas from the anode and hydrogen and caustic soda from the cathode using brine as an electrolyte is currently the most widely used. This is the method being used.
- the electrolytic voltage should consider both the voltage required for the theoretical brine electrolysis, the overvoltage of the anode, the overvoltage of the cathode, the voltage by the resistance of the ion exchange membrane, and the voltage by the distance between the anode and the cathode. Among these voltages, the overvoltage caused by the electrode acts as an important variable.
- DSA Differentally Stable Anode
- Stainless steel or nickel has been mainly used as such a cathode, and recently, to reduce overvoltage, the surface of stainless steel or nickel is coated with nickel oxide, an alloy of nickel and tin, a combination of activated carbon and oxide, ruthenium oxide, platinum, etc. The method of use is being studied.
- Patent Document 1 JP2003-2977967A
- An object of the present invention is to provide an electrode for electrolysis in which overvoltage is improved by increasing adhesion to a membrane and reducing gas traps.
- the present invention is a metal substrate layer having a mesh structure; And a coating layer comprising a ruthenium oxide, a cerium oxide, a platinum oxide, and an amine compound, wherein the coating layer is formed on a surface of the wire constituting the mesh structure, and the aspect ratio of the individual cross-sections of the wire is 120% It provides an electrode for electrolysis that is above.
- the present invention comprises the steps of flattening the metal substrate having the mesh structure so that the aspect ratio of the individual cross-section of the wire constituting the mesh structure is 120% or more; Applying a coating composition on the surface of the wire of the planarized metal substrate; And drying and firing the metal substrate to which the coating composition is applied, and coating the coating composition, wherein the coating composition comprises a ruthenium-based precursor, a cerium-based precursor, a platinum-based precursor, and an amine-based compound.
- the coating composition comprises a ruthenium-based precursor, a cerium-based precursor, a platinum-based precursor, and an amine-based compound.
- the metal substrate is flattened, adhesion to the membrane is high, and thus, gas traps are reduced, thereby effectively enabling gas desorption, thereby improving overvoltage.
- FIG. 1 is a diagram schematically showing an effect that may appear when a metal substrate is flattened in the present invention.
- FIG. 2 is a graph showing changes in performance of electrodes of Examples 1 to 2 and Comparative Examples 1 to 2 of the present invention over time.
- Example 3 is a diagram illustrating the electrode surfaces of Example 1 and Comparative Example 2 of the present invention.
- a nickel substrate Ni purity 99% or more, diameter 200 ⁇ m, thickness 370 ⁇ m
- the ruthenium-based precursor was Heraeus' ruthenium chloride hydrate and the platinum-based precursor.
- Alfa Aesar's platinum chloride platinum (IV) chloride, 99.9%
- Daejunghwa Geum's urea as an amine-based compound were used.
- isopropyl alcohol and 2-butoxy ethanol from Daejunghwa Geum were used as a solvent.
- Metal precursors RuCl 3 ⁇ nH 2 O, Ce(NO 3 ) 3 ⁇ 6H 2 O and PtCl 4 are mixed in a molar ratio of 5:1:0.4, and isopropyl alcohol and 2-butoxy ethanol are mixed in a volume ratio of 1:1 It was dissolved in the mixed solvent. Thereafter, when the metal precursor was dissolved, urea, an amine compound, was added at a molar ratio of 3.13, and stirred at 50° C. overnight to prepare a coating composition solution having a concentration of 100 g/L based on ruthenium.
- the nickel substrate of the material was rolled to prepare a flattened nickel substrate having a thickness of 170 ⁇ m.
- the aspect ratio of the cross section of the individual wire of the flattened nickel substrate was measured, and the value was 120 to 169%.
- the surface of the substrate was sandblasted with aluminum oxide (120 mesh) at 0.4 MPa to form an uneven structure.
- the processed nickel substrate was put in a 5M H 2 SO 4 aqueous solution at 80° C. and treated for 3 minutes to complete the pretreatment process.
- the coating composition solution prepared above was coated on the pretreated nickel substrate by a brush method, placed in a convection drying oven at 180° C. and dried for 10 minutes, and then put in an electric heating furnace at 500° C. and fired for 10 minutes.
- the coating, drying, and firing processes were additionally performed 9 times, and finally, firing in an electric heating furnace heated to 500° C. for 1 hour to prepare an electrode for electrolysis.
- the electrode for electrolysis was prepared in the same manner.
- the aspect ratio of the cross section of the individual wire of the flattened nickel substrate was measured, and the value was 132 to 155%.
- Example 1 except that instead of rolling, pressing was performed in the same manner to prepare an electrode for electrolysis.
- press treatment flattening was not performed consistently compared to the case of flattening by other methods, but the value of the aspect ratio was 120 to 180%, which was found to be larger than that of flattening by other methods.
- Example 1 except that the thickness was 170 ⁇ m and a nickel substrate that was not planarized was used, all were carried out in the same manner to prepare an electrode for electrolysis.
- the aspect ratio of the cross-section of the individual wires of the nickel substrate that was not flattened was 100%.
- AKC's oxidation electrode which is the electrode used, was used as the anode, and the cathode was measured using a 5X5cm 2 cell capable of realizing a zero gap cell in the form of a nickel mattress mounted on a current meter and an electrode raised. I did. Aciplex's F6808 was used as the membrane, and the experiment was performed at a current density of 6.2kA/m 2 as a constant current. A cathode voltage measurement experiment was performed using a half-cell in Chlor-Alkali Electrolysis.
- the electrode of the Example having an aspect ratio of 120% or more exhibited a lower overvoltage than the electrode of the Comparative Example which was not subjected to the planarization treatment.
- the electrode of Comparative Example 1 exhibited a high overvoltage from the beginning, and the electrodes of Examples 1 and 2 exhibited lower values than the electrode of Comparative Example 2 at the convergent overvoltage value after a certain period of time. Confirmed the point.
- Example 3 The surfaces of the electrodes prepared in Example 1 and Comparative Example 2 were observed, and this is shown in FIG. 3. Observation was performed through a SEM (Scanning Electron Microscope). From FIG. 3, it was confirmed that the wires intersecting in the mesh structure contacted in a large area, and thus a coating layer having a larger area can be secured. That is, it was confirmed that the electrode of Example 1 could smoothly perform the electrolysis reaction compared to Comparative Example 2.
- spect ratio refers to the ratio of width to height (width/height).
- mesh structure refers to a mesh structure formed by intertwining wires.
- the metal substrate may be nickel, titanium, tantalum, aluminum, hafnium, zirconium, molybdenum, tungsten, stainless steel, or alloys thereof, of which nickel is preferable.
- nickel When nickel is used as a metal substrate, durability and electrode performance may be excellent.
- the individual wires constituting the mesh structure thereof are planarized so that the aspect ratio of each wire cross section is 120% or more.
- the lower limit of the aspect ratio may be 120%, 125%, or 130%
- the upper limit of the aspect ratio may be 180%, 170%, 160% or 150%.
- the aspect ratio of the cross-section of individual wires constituting the mesh structure is set to be 120% or more by flattening the metal substrate having the mesh structure, the adhesion to the membrane increases, thereby reducing gas traps, and consequently reducing overvoltage. It can be improved, and a smooth electrolysis reaction can be carried out.
- Planarization can be performed without limitation of the method, as long as the aspect ratio of the cross-section of individual wires constituting the mesh structure can be increased to 120% or more without affecting the durability of the metal substrate, and preferably through pressing, rolling or chemical etching. Can be done.
- the ruthenium-based oxide, cerium-based oxide, and platinum-based oxide of the coating layer play a role of lowering the overvoltage of the electrode, and in particular, the platinum-based oxide can further improve the stability of the catalyst layer to improve overvoltage, and the cerium-based oxide is durable and the catalyst layer It can improve stability.
- the thickness of the metal substrate may be 100 to 300 ⁇ m, preferably 120 to 280 ⁇ m, more preferably 150 to 250 ⁇ m. If the metal substrate is too thin, for example, if it is thinner than 100 ⁇ m, the durability of the electrode may be weak and there may be a problem in use. If the metal substrate is too thick, for example, if it exceeds 300 ⁇ m, a lot of cost is consumed in manufacturing the electrode. If a metal substrate having a thick mesh structure is used, the hardness of the substrate is high, so that the adhesion between the electrode and the membrane in the zero-gap cell decreases, and thus the electrolysis reaction may not occur smoothly.
- the present invention comprises the steps of flattening the metal substrate having the mesh structure so that the aspect ratio of individual cross-sections of the wires constituting the mesh structure is 120% or more; Applying a coating composition on the surface of the wire of the planarized metal substrate; And drying and firing the metal substrate to which the coating composition is applied, and coating the coating composition, wherein the coating composition comprises a ruthenium-based precursor, a cerium-based precursor, a platinum-based precursor, and an amine-based compound.
- the coating composition comprises a ruthenium-based precursor, a cerium-based precursor, a platinum-based precursor, and an amine-based compound.
- the planarization may be performed through the same method as described above, and is preferably performed through rolling or chemical etching.
- the ruthenium-based precursor is a material that provides ruthenium as an active material in the catalyst layer of the cathode for electrolysis.
- the ruthenium-based precursor is ruthenium hexafluoride (RuF 6 ), ruthenium (III) chloride (RuCl 3 ), ruthenium (III) chloride hydrate (RuCl 3 xH 2 O), ruthenium (III) bromide (RuBr 3 ), ruthenium (III) bromide hydrate (RuBr 3 xH 2 O), ruthenium iodide (RuI 3 ) and may be one or more selected from the group consisting of a ruthenium acetate salt, of which ruthenium (III) chloride hydrate is preferred.
- the cerium-based precursor is a material that provides a cerium element to the catalyst layer of the cathode for electrolysis.
- the cerium element can improve the durability of the electrolysis negative electrode to minimize the loss of ruthenium in the catalyst layer of the electrolysis electrode during activation or electrolysis. Specifically, when the cathode for electrolysis is activated or electrolyzed, particles containing ruthenium in the catalyst layer become metallic Ru (metallic Ru) without changing the structure or partially hydrated to reduce to active species. do.
- the structure of the particles containing the cerium element in the catalyst layer is changed to form a network with the particles containing ruthenium in the catalyst layer, and as a result, the durability of the cathode for electrolysis can be improved, thereby preventing the loss of ruthenium in the catalyst layer.
- cerium-based precursors are cerium (III) nitrate hexahydrate (Ce (NO 3 ) 3 ⁇ 6H 2 O), cerium (IV) sulfate tetrahydrate (Ce (SO 4 ) 2 ⁇ 4H 2 O) and cerium (III) It is at least one selected from the group consisting of chloride heptahydrate (CeCl 3 7H 2 O), and cerium (III) nitrate hexahydrate is preferable.
- the catalyst composition may include 0.01 to 0.5 moles or 0.05 to 0.35 moles of the cerium-based precursor per 1 mole of the ruthenium-based precursor, of which 0.05 to 0.35 moles is preferably included.
- the durability of the electrode to be manufactured can be improved to minimize the loss of ruthenium in the catalyst layer during activation or electrolysis.
- the platinum-based precursor is a material that provides platinum to the catalyst layer of the cathode for electrolysis.
- the platinum may improve the overvoltage phenomenon of the electrode.
- the platinum can minimize the deviation of the initial performance of the electrode and the performance after a certain period of time, and as a result, the electrode does not perform a separate activation process or can be minimized.
- the platinum-based precursors are chloroplatinic acid hexahydrate (H 2 PtCl 6 6H 2 O), diamine dinitro platinum (Pt(NH 3 ) 2 (NO) 2 ) and platinum (IV) chloride (PtCl 4 ), platinum ( II) chloride (PtCl 2 ), potassium tetrachloroplatinate (K 2 PtCl 4 ), potassium hexachloroplatinate (K 2 PtCl 6 ) It may be one or more selected from the group consisting of, of which platinum (IV) chloride Is preferred.
- the catalyst composition may contain the platinum-based precursor in an amount of 0.01 to 0.7 moles or 0.02 to 0.5 moles per 1 mole of the ruthenium-based precursor, of which 0.02 to 0.5 moles is preferably included.
- the overvoltage phenomenon of the electrode can be remarkably improved.
- the electrode activation process is unnecessary. Accordingly, it is possible to reduce the time and cost required for the electrode activation process.
- the amine-based compound is known to play a role of reducing the particle phase by introducing it as an additive when preparing nanoparticles, etc., and exhibits an effect of making the ruthenium oxide crystal phase smaller even in electrode coating.
- the catalyst composition contains an amine-based compound, the cerium network structure formed by increasing the size of the acicular structure of cerium plays a role in fixing the ruthenium particles more firmly, thereby improving the durability of the electrode. And, as a result, even when the electrode is operated for a long time, there is an effect of remarkably reducing the peeling phenomenon of the electrode.
- the catalyst composition may contain 0.5 to 1 mole or 0.6 to 0.9 mole of the amine compound per 1 mole of the ruthenium-based precursor, of which 0.6 to 0.9 mole is preferably included.
- the amine-based compound changes the structure of the particles containing cerium element faster than when the amine-based compound is not used after activation of the electrode or during electrolysis to form a network in the catalyst layer. And, as a result, the durability of the electrode can be improved. Specifically, the amine-based compound may improve the durability of the electrode by increasing the acicular structure of particles containing cerium.
- the amine compound is urea.
- urea When urea is used, compared to other amine-based compounds, the stability and safety of the coating solution are excellent, and there are advantages of less generation of harmful substances and odors even when manufacturing an electrode in a large area.
- it may include a step of pretreating the metal substrate before performing the coating step.
- the pretreatment may be to form irregularities on the surface of the metal substrate by chemical etching, blasting, or thermal spraying of the metal substrate.
- the pretreatment may be performed by sand blasting the surface of the metal substrate to form fine irregularities, and salt treatment or acid treatment.
- the surface of the metal substrate may be sandblasted with alumina to form irregularities, immersed in an aqueous sulfuric acid solution, washed and dried to pretreat to form fine irregularities on the surface of the metal substrate.
- the application is not particularly limited as long as the catalyst composition can be evenly applied on the metal substrate, and may be performed by a method known in the art.
- the application may be performed by any one method selected from the group consisting of doctor blade, die casting, comma coating, screen printing, spray spraying, electrospinning, roll coating, and brushing.
- the drying may be performed at 50 to 300°C for 5 to 60 minutes, preferably at 50 to 200°C for 5 to 20 minutes.
- the solvent can be sufficiently removed while minimizing energy consumption.
- the sintering may be performed at 400 to 600° C. for 1 hour or less, and is preferably performed at 450 to 550° C. for 5 to 30 minutes.
- the firing serves to convert a metal precursor into an oxide.
- sintering satisfies the above-described conditions, impurities in the catalyst layer are easily removed, and strength of the metal substrate may not be affected.
- the coating may be performed by sequentially repeating application, drying, and firing so that the amount of ruthenium per unit area (m 2) of the metal substrate is 10 g or more. That is, in the manufacturing method according to another embodiment of the present invention, after applying, drying and firing the catalyst composition on at least one surface of a metal substrate, it is applied again on one surface of the metal substrate to which the first catalyst composition is applied, and dried. And coating to be fired can be repeatedly performed. The repetition may be performed 5 to 20 times.
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Abstract
Description
| 구분 | 실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | 비교예 2 | 비교예 3 |
| 평탄화 방법 | 압연 | 화학적 에칭 | 프레스 | - | - | - |
| 종횡비 | 120-169% | 132-155% | 120-180% | 100% | 100% | 100% |
| 기재의 두께(㎛) | 170 | 180 | 160 | 330 | 380 | 170 |
| 코팅층의 조성비(Ru:Ce:Pt:우레아) | 5:1:0.4:3.13 | 5:1:0.4:3.13 | 5:1:0.4:3.13 | 5:1:0.4:3.13 | 5:1:0.4:3.13 | 5:1:0.4:3.13 |
| 실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | 비교예 2 | 비교예 3 | |
| 성능(V) | 3.040 | 3.035 | 3.043 | 3.086 | 3.045 | 3.126 |
Claims (10)
- 메쉬 구조를 갖는 금속 기재층; 및루테늄계 산화물, 세륨계 산화물, 플래티넘계 산화물 및 아민계 화합물을 포함하는 코팅층을 포함하고,상기 코팅층은 상기 메쉬 구조를 구성하는 와이어의 표면 상에 형성되며,상기 와이어 개별 단면의 종횡비는 120% 이상인 것인 전기분해용 전극.
- 제1항에 있어서, 상기 종횡비는 120 내지 180% 인 것인 전기분해용 전극.
- 제1항에 있어서, 상기 금속은 니켈, 티타늄, 탄탈, 알루미늄, 하프늄, 지르코늄, 몰리브덴, 텅스텐, 스테인레스 스틸 또는 이들의 합금인 것인 전기분해용 전극.
- 제1항에 있어서, 상기 금속 기재층의 두께는 100 내지 300㎛인 것인 전기분해용 전극.
- 메쉬 구조를 구성하는 와이어 개별 단면의 종횡비가 120% 이상이 되도록, 상기 메쉬 구조를 갖는 금속 기재를 평탄화 처리하는 단계;상기 평탄화 처리된 금속 기재의 와이어 표면 상에 코팅 조성물을 도포하는 단계; 및코팅 조성물이 도포된 금속 기재를 건조 및 소성하여 코팅하는 단계를 포함하며,상기 코팅 조성물은 루테늄계 전구체, 세륨계 전구체, 플래티넘계 전구체 및 아민계 화합물을 포함하는 것인 전기분해용 전극의 제조방법.
- 제5항에 있어서, 상기 평탄화는 압연 또는 화학적 에칭을 통해 수행되는 것인 전기분해용 전극의 제조방법.
- 제5항에 있어서, 상기 금속 기재는 니켈인 것인 전기분해용 전극의 제조방법.
- 제5항에 있어서,상기 루테늄계 전구체는 루테늄헥사플루오라이드(RuF6), 루테늄(III) 클로라이드(RuCl3), 루테늄(III) 클로라이드 하이드레이트(RuCl3·xH2O), 루테늄(III) 브로마이드(RuBr3), 루테늄(III) 브로마이드 하이드레이트(RuBr3·xH2O), 루테늄 아이오디드(RuI3) 및 초산 루테늄염으로 이루어진 군에서 선택되는 1종 이상이고,상기 세륨계 전구체는 세륨(III) 나이트레이트 헥사하이드레이트(Ce(NO3)3·6H2O), 세륨(IV) 설페이트 테트라하이드레이트(Ce(SO4)2·4H2O) 및 세륨(III) 클로라이드 헵타하이드레이트(CeCl3·7H2O)으로 이루어진 군에서 선택되는 1종 이상이고,상기 플래티넘계 전구체는 클로로플래티닉산 헥사하이드레이트(H2PtCl6·6H2O), 디아민 디니트로 플래티넘(Pt(NH3)2(NO)2) 및 플래티넘(IV) 클로라이드(PtCl4), 플래티넘(II) 클로라이드(PtCl2), 칼륨 테트라클로로플래티네이트(K2PtCl4), 칼륨 헥사클로로플래티네이트(K2PtCl6)으로 이루어진 군에서 선택되는 1종 이상인 것인 전기분해용 전극의 제조방법.
- 제5항에 있어서, 상기 아민계 화합물은 우레아인 것인 전기분해용 전극의 제조방법.
- 제5항에 있어서, 상기 도포, 건조 및 소성은 각기 5 내지 20회 반복 수행되는 것인 전기분해용 전극의 제조방법.
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| CN202080006868.6A CN113242915B (zh) | 2019-02-22 | 2020-02-17 | 用于电解的电极 |
| JP2021530159A JP7121861B2 (ja) | 2019-02-22 | 2020-02-17 | 電気分解用電極 |
| EP20759250.2A EP3929331A4 (en) | 2019-02-22 | 2020-02-17 | ELECTRODE FOR ELECTROLYSIS |
| US17/311,850 US12428742B2 (en) | 2019-02-22 | 2020-02-17 | Electrode for electrolysis |
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| KR10-2019-0021361 | 2019-02-22 | ||
| KR1020190021361A KR102503553B1 (ko) | 2019-02-22 | 2019-02-22 | 전기분해용 전극 |
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| US (1) | US12428742B2 (ko) |
| EP (1) | EP3929331A4 (ko) |
| JP (1) | JP7121861B2 (ko) |
| KR (1) | KR102503553B1 (ko) |
| CN (1) | CN113242915B (ko) |
| WO (1) | WO2020171509A1 (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4253606A4 (en) * | 2020-11-24 | 2024-10-09 | Lg Chem, Ltd. | Method for manufacturing electrode for electrolysis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20230243046A1 (en) * | 2022-02-01 | 2023-08-03 | Verdagy, Inc. | Flattened wire mesh electrode for use in an electrolyzer cell |
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| CN113242915A (zh) | 2021-08-10 |
| JP7121861B2 (ja) | 2022-08-18 |
| US20220018032A1 (en) | 2022-01-20 |
| JP2022509659A (ja) | 2022-01-21 |
| EP3929331A1 (en) | 2021-12-29 |
| KR20200102845A (ko) | 2020-09-01 |
| CN113242915B (zh) | 2024-08-27 |
| KR102503553B1 (ko) | 2023-02-27 |
| US12428742B2 (en) | 2025-09-30 |
| EP3929331A4 (en) | 2022-04-27 |
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