CN115142085A - High-activity oxygen evolution electrode material with thermocatalytic effect and preparation method thereof - Google Patents

High-activity oxygen evolution electrode material with thermocatalytic effect and preparation method thereof Download PDF

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CN115142085A
CN115142085A CN202210834408.3A CN202210834408A CN115142085A CN 115142085 A CN115142085 A CN 115142085A CN 202210834408 A CN202210834408 A CN 202210834408A CN 115142085 A CN115142085 A CN 115142085A
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electrode material
oxygen evolution
base material
metal sulfate
preparation
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CN115142085B (en
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王晓荣
刘中清
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Chengdu Wanrongda Technology Co ltd
Sichuan University
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Chengdu Wanrongda Technology Co ltd
Sichuan University
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    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
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    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
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    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
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Abstract

The invention discloses a high-activity oxygen evolution electrode material with a thermocatalytic effect and a preparation method thereof, wherein the preparation method comprises the following steps: and (2) placing the metal base material with a smooth surface in a mixed aqueous solution of transition metal sulfate and alkali metal sulfate for self-assembly reaction, and heating the base material with the corroded surface in a reducing gas atmosphere at 400-600 ℃ for reduction reaction to obtain the electrode material. The electrode material has excellent electrocatalytic activity and stability, and has a thermocatalytic effect of obviously reduced oxygen evolution overpotential along with the increase of the temperature of the electrolyte.

Description

High-activity oxygen evolution electrode material with thermocatalytic effect and preparation method thereof
Technical Field
The invention belongs to the technical field of catalysts for hydrogen production by water electrolysis, and particularly relates to the technical field of catalysts for anodic oxygen evolution reaction.
Background
The electrolyzed water has the advantages of abundant resources, renewability, capability of effectively utilizing clean energy resources such as wind power, photoelectricity, water and electricity in valley period and the like to carry out electric hydrogen conversion, capability of being combined with a fuel cell and the like, and is an important way for realizing hydrogen economy. The electrolytic water comprises two half reactions of anodic oxygen evolution and cathodic hydrogen evolution, wherein the oxygen evolution reaction is a kinetic limiting step due to the fact that four electrons are involved, and is a main root cause of high energy consumption and low efficiency in the electrolytic hydrogen production process.
Noble metals Ru and Ir-based compounds are considered as catalysts with optimal oxygen evolution performance, but cannot realize large-scale industrial application due to high price and scarce resources. Therefore, the development of non-noble metal catalysts with low oxygen evolution overpotentials is an important research direction.
Of the non-noble metal oxygen evolution electrocatalysts, transition metal, e.g., nickel and cobalt based catalysts exhibit high oxygen evolution electrocatalytic activity, but most of them reach 10mA cm -2 The current density still needs high overpotential of 250-400 mV, and the application effect is not good.
On the other hand, the anode surface modification method is one of the important methods for preparing oxygen evolution electrodes, and the method utilizes metal surface oxides as electrode active coatings, and the electrochemical stability, thickness, form, magnetism, chemical bond structure, surface electronic structure, conductivity and the like of the oxide layers are main factors influencing the oxygen evolution performance. The current methods for preparing the anode active coating mainly comprise an electroplating method, a metal diffusion method, a thermal decomposition method and the like, and the active coating electrode prepared by the methods usually has the defects of short service life, complex preparation process and the like, and is difficult to meet industrial application.
In addition, in the actual process of producing hydrogen by electrolyzing water, there is a concern that the water electrolysis process is accompanied by a heat effect which cannot be ignored even under the condition of 100% faradaic efficiency, and at a high current density (500 to 1000mA cm) facing large-scale industrial application -2 ) The effect is more remarkable, the temperature of a water electrolysis system (comprising an electrode, a diaphragm, electrolyte and the like) can be increased to 50-90 ℃, the electric energy consumption of hydrogen production by water electrolysis is increased, and the tolerance to the used catalyst is also severe. Most current research on water electrolysis electrocatalysts does not take into account the thermal effects associated therewith or the efficient use of other low-value thermal energies.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-activity oxygen evolution electrode material with a thermal catalytic effect and a preparation method thereof, wherein the high-activity oxygen evolution electrode material can effectively utilize the thermal effect of electrolyzed water so as to enhance the catalytic activity, and the electrode material comprises a cheap current collector material and a layered transition metal oxide or hydroxide (LDH) active catalytic layer which is obtained by in-situ treatment on a current collector and is rich in oxygen vacancies, has excellent electrocatalytic activity and stability, and has the thermal catalytic effect of obviously reducing the oxygen evolution overpotential along with the increase of the temperature of an electrolyte.
The technical scheme of the invention is as follows:
a preparation method of a high-activity oxygen evolution electrode material with a thermocatalytic effect comprises the following steps:
placing the metal base material with a smooth surface in a mixed aqueous solution of transition metal sulfate and alkali metal sulfate to carry out self-assembly reaction, and then cleaning and drying to obtain a base material with a corroded surface;
and heating the base material with the corroded surface in a reducing gas atmosphere at the temperature of 400-600 ℃ to perform a reduction reaction to obtain the high-activity oxygen evolution electrode material with the thermocatalysis effect.
By adopting the preparation method, the required equipment is simple and easy to operate, the method has the remarkable advantages of large scale and low cost, meanwhile, the electrolyte used in the preparation process does not contain any organic component, the active component and the current collector are tightly combined, and the method not only has excellent electrocatalytic activity and stability, but also has excellent thermal catalysis effect, namely the oxygen evolution overpotential is obviously reduced along with the increase of the temperature of the electrolyte under the condition of keeping other conditions unchanged.
The technical scheme can firstly grow interlayer anions in situ on the surface of a metal base material such as an iron sheet through chemical corrosive self-assembly reaction to form SO 4 2- And then heat-treated in a reducing atmosphere to make SO 4 2- Conversion to-SO 3 Obtaining interlayer graft-SO 3 Electrode material of the group. For the four-electron process of water electrolysis oxygen evolution, because the O-H fracture energy barrier is high, the-OH group in the adsorption state is directly connected with OH in the solution - Reacting to form an adsorbed oxygen atom M-O ads Often a rate limiting step. Therefore, the above can be applied to OH or H on OOH in the adsorbed state + Producing trapped-SO 3 The grafting of the group can promote the breaking of O-H bond in the oxygen evolution reaction process, thereby obviously reducing the oxygen evolution overpotential, and the capture effect has obvious thermal catalysis effect, the capture capability is obviously enhanced along with the temperature rise, and the group has positive promotion effect on the reduction of the low water electrolysis oxygen evolution overpotential at higher temperature.
Furthermore, the preparation method can form a proper amount of oxygen vacancies on the surface of the grafted LDH through the coordination and the cooperation of the corrosion reaction and the reduction reaction, so that the prepared electrode material containing the LDH active component has high oxygen evolution activity and thermal catalysis performance, the oxygen evolution overpotential is further reduced, and the electric energy utilization efficiency is improved.
The inventors surprisingly found that the oxygen evolution electrode material prepared by selecting the transition metal sulfate and the alkali metal sulfate has better oxygen evolution catalytic activity and thermal catalytic effect, lower production cost, higher environmental protection and harmlessness and simpler preparation process compared with other anion metal salts.
According to the preparation process, the transition metal perchlorate and the alkali metal perchlorate are used as corrosive liquid, firstly, the layered transition metal hydroxide (LDH) taking perchlorate as intercalation anions is prepared, then, the interlayer perchlorate ions are exchanged into sulfate ions by taking alkali metal sulfate as exchange liquid in an ion exchange mode, then, the same heating reduction reaction is carried out, and the obtained electrode material is also interlayer grafting-SO 3 The final performance of the group electrode material is slightly inferior to that of the electrode material prepared by the preparation method, but the preparation process of the group electrode material needs expensive perchlorate and adds an ion exchange step, the process is more complicated, the time consumption is longer, the preparation cost is high, and the perchlorate-containing waste is neededThe water is treated, and the process is not environment-friendly.
According to some preferred embodiments of the invention, the substrate is selected from iron sheet.
The substrate selected by the preferred embodiment has low cost, and can be tightly combined with the active component formed in situ on the substrate to obtain the electrode material with excellent electrocatalytic activity, stability and thermocatalytic effect.
According to some preferred embodiments of the present invention, the self-assembly reaction is carried out at a temperature of 20 to 90 ℃ for a time of 0.5 to 6.0 hours.
According to some preferred embodiments of the present invention, the concentration of the transition metal sulfate is 0.002 to 0.01mol/L, and the concentration of the alkali metal sulfate is 0.01 to 0.1mol/L.
According to some preferred embodiments of the invention, the reducing gas is H 2 And Ar.
The inventors have surprisingly found that when the reduction reaction is carried out under the reducing gas, more abundant oxygen-containing vacancies can be formed on the surface of the electrode material, and the oxygen evolution reaction activity and the thermal catalytic effect are enhanced.
According to some preferred embodiments of the invention, the H 2 And Ar in a volume ratio of (10-50%): (50-90%).
According to some preferred embodiments of the invention, the transition metal sulfate is selected from NiSO 4 And/or CoSO 4 (ii) a The alkali metal sulfate is selected from K 2 SO 4 And/or Na 2 SO 4 。
According to some preferred embodiments of the present invention, the preparation method further comprises: pre-treating the metal substrate, the pre-treating comprising: derusting and polishing the metal base material by using an HCl solution, carrying out ultrasonic treatment for 5-30 minutes by using ultrapure water, and carrying out air cooling to obtain a pretreated base material; and carrying out the self-assembly reaction on the pretreated base material.
According to some preferred embodiments of the present invention, the mixed aqueous solution comprises 0.002 to 0.01mol/L of NiSO 4 、0.002～0.01mol/L CoSO 4 And 0.01 to 0.1mol/L K 2 SO 4 Or 0.01 to 0.1mol/LNa 2 SO 4 The temperature of the self-assembly reaction is 20-90 ℃, the time is 0.5-6.0H, and the reducing gas comprises 10-50% of H by volume 2 And 50-90% of Ar, wherein the temperature of the reduction reaction is 400-600 ℃, and the time is 0.5-3.0 hours.
More preferably, the mixed aqueous solution comprises 0.005mol/L of NiSO 4 、0.005mol/L CoSO 4 And 0.05mol/L K 2 SO 4 The temperature of the self-assembly reaction is 75 ℃, the time is 3 hours, and the reducing gas comprises 10 percent of H by volume 2 And 90% Ar, the temperature of the reduction reaction is 500 ℃, and the time is 1.5 hours.
In some embodiments, the resulting electrode material is at 40mA/cm in this preferred embodiment 2 The overpotential of the current density is reduced from 272mV to 235mV at 100mA/cm with the temperature rise from 25 ℃ to 75 DEG C 2 The overpotential of the catalyst at the density is reduced from 323mV to 270mV along with the temperature rise from 25 ℃ to 75 ℃. 40mA/cm at 25 DEG C 2 The electrode potential fluctuation of the continuous operation for 48 hours is only 1.525 +/-10 mV (relative to a standard hydrogen electrode), and the continuous operation has excellent thermal catalysis effect and stability.
The invention further provides the high-activity oxygen evolution electrode material prepared by the preparation method.
The electrode material contains a metal substrate current collector which is tightly combined and a self-assembly active component which is generated in situ on the metal substrate current collector, can obviously reduce the contact resistance between the active component and the current collector, and effectively ensures the stable performance of the electrode material in an oxygen evolution reaction.
The invention has the following beneficial effects:
the sulfonic acid is grafted between layers by taking a metal substrate, particularly an iron sheet, as a current collector-SO 3 The oxygen evolution electrode with the functional group and the surface rich in oxygen vacancy as the active component can generate obvious thermal catalytic effect in alkaline electrolyte such as KOH, namely, the oxygen evolution overpotential of the electrode is obviously reduced along with the increase of the temperature of the electrolyte when other conditions are not changed, so that the electrode has lower oxygen evolution overpotential at higher temperature of the electrolyte compared with the same type of LDH electrode.
In some embodiments of the present invention, the electrode uses an iron sheet as a current collector, and compared with other substrates in the prior art, such as foamed nickel, carbon paper, glassy carbon electrode, etc., the electrode not only has higher mechanical strength and better conductivity, but also is particularly cheap, and the preparation cost of the electrode per unit area is only 1/6-1/5 of that in the prior art.
The preparation method adopts the chemical corrosion method for in-situ growth and reduction heat treatment, no organic reagent is introduced into the electrolyte, the reaction condition is mild, the equipment is simple, the environment is friendly, the binding force of the active component and the substrate is strong, the contact resistance is low, the electrocatalytic activity is high, the active component is not easy to fall off under the cavitation action of oxygen evolution, and the performance is stable.
The preparation method provided by the invention has the advantages of simple and feasible process, low equipment requirement and easiness in realizing large-scale preparation, and the oxygen evolution electrode which has high cost performance, is environment-friendly and has an obvious thermocatalytic oxygen evolution effect can be obtained.
The oxygen evolution electrode prepared by the invention has excellent performance, for example, in some specific embodiments, the obtained electrode material takes 1M KOH as electrolyte, and the current density is 100mA/cm at 75 DEG C 2 The overpotential of (a) is only 271mV (85% solution resistance compensation), which is reduced by 53mV compared to 324mV at 25 ℃; when tested for stability, the current density was 40mAcm at 25 deg.C -2 The device continuously operates for 48 hours, the potential is maintained at-1.525V, the fluctuation range is within 10mV, and good stability is shown.
Drawings
FIG. 1 is a linear voltammogram of the electrode material obtained in example 1 at 25 ℃, 55 ℃ and 75 ℃.
FIG. 2 is a linear voltammogram of the electrode material obtained in example 2 at 25 ℃, 55 ℃ and 75 ℃.
FIG. 3 shows the electrode material obtained in example 2 at 25 ℃ and 40mA/cm 2 The electrode potential fluctuation curve of 48 hours of continuous operation is shown below.
FIG. 4 is a linear voltammogram of the electrode material obtained in example 3 at 25 ℃, 55 ℃ and 75 ℃.
Detailed Description
The present invention is described in detail with reference to the following embodiments and drawings, but it should be understood that the embodiments and drawings are only for illustrative purposes and are not intended to limit the scope of the present invention. All reasonable variations and combinations that fall within the spirit of the invention are intended to be within the scope of the invention.
According to the technical scheme of the invention, some specific embodiments of the preparation method of the high-activity oxygen evolution electrode material with the thermocatalytic effect comprise the following steps:
(1) Substrate pretreatment, such as pickling, polishing, water washing, drying, etc.; the substrate is preferably a relatively low cost metal sheet, such as iron sheet;
(2) Carrying out chemical corrosion self-assembly treatment on the pretreated base material, wherein the chemical corrosion self-assembly treatment comprises the steps of placing the pretreated base material in a mixed aqueous solution of transition metal sulfate and alkali metal sulfate, corroding for 0.5-6.0 hours at the temperature of 20-90 ℃, and then cleaning and drying to obtain a corroded base material;
(3) And carrying out reduction heat treatment on the corroded substrate, wherein the reduction heat treatment comprises the following steps: and heating the corroded base material in a reducing gas atmosphere to carry out reduction reaction, thereby obtaining the high-activity oxygen evolution electrode.
Some more specific embodiments are as follows:
the pretreatment of the step (1) comprises the following steps: and (3) carrying out rust removal and polishing on the base material for 10-30 seconds by using an HCl solution, carrying out ultrasonic treatment for 5-30 minutes by using ultrapure water, and carrying out air cooling to obtain the pretreated base material. The concentration of the HCl solution is preferably 2.5 to 3.5mol/L.
In the step (2), the transition metal sulfate is selected from nickel sulfate and/or cobalt sulfate.
In the step (2), the alkali metal sulfate is selected from potassium sulfate and/or sodium sulfate.
In the step (2), the concentration of the transition metal sulfate is preferably 0.002 to 0.01mol/L.
In the step (2), the concentration of the alkali metal sulfate is preferably 0.01 to 0.1mol/L.
In the step (3), the volume ratio of the reducing gas is (10-50%): (50-90%) of H 2 And Ar.
In the step (3), the temperature of the reduction reaction is 400-600 ℃, and the time is 0.5-3 hours.
The oxygen evolution electrode produced in the above manner is suitable as an electrolytic water oxygen evolution anode in an alkaline electrolyte such as an aqueous solution of KOH or NaOH.
The technical solution of the present invention is further shown by examples below.
Example 1
Preparing an electrode material by:
the method comprises the following steps: iron sheet derusting and polishing pretreatment:
polishing an iron sheet with the thickness of 0.3mm in 3mol/L HCl for 15s, taking out, repeatedly washing the iron sheet with ultrapure water, then cleaning the iron sheet in the ultrapure water for 10 minutes, taking out and drying the iron sheet with cold air for later use;
step two: chemical corrosion:
preparing 0.005mol/LNiSO 4 And 0.05mol/L K 2 SO 4 The water solution is corrosive liquid, the polished iron sheet is suspended in the corrosive liquid, the temperature of the corrosive liquid is controlled to be 25 ℃, the time is 6 hours, the sample is taken out and washed by ultrapure water repeatedly, and then the sample is dried by cold air for standby;
step three: reduction heat treatment:
placing the iron sheet after chemical corrosion in a tube furnace at the volume ratio of 20% H 2 And performing heat treatment for 2 hours at 450 ℃ in a mixed gas of 80% of Ar, naturally cooling, and taking out to obtain the electrode material.
The obtained electrode material is used as a working electrode, a graphite sheet is used as a counter electrode, saturated Hg/HgO is used as a reference electrode to form a three-electrode system, 1mol/L KOH aqueous solution is used as electrolyte, and the electrolyte is respectively heated at 25℃,Linear voltammetric measurements were performed at 55 ℃ and 75 ℃. The results are shown in FIG. 1 (85% solution resistance compensation). As can be seen, the electrode material is at 10mA/cm 2 The overpotential at the current density is 269mV, 227mV and 208mV at 100mA/cm 2 The overpotentials at the current densities were 375mV, 342mV, and 274mV, respectively.
Example 2
Preparing an electrode material by:
the method comprises the following steps: rust removal and polishing pretreatment of iron sheets:
polishing an iron sheet with the thickness of 0.3mm in 3mol/L HCl for 25s, taking out, repeatedly washing the iron sheet with ultrapure water, then cleaning the iron sheet with the ultrapure water for 25 minutes, taking out, and drying the iron sheet with cold air for later use;
step two: chemical corrosion:
preparing 0.005mol/LNiSO 4 And 0.005mol/L CoSO 4 And 0.05mol/L K 2 SO 4 The water solution is corrosive liquid, the iron sheet after polishing pretreatment is suspended in the corrosive liquid, the temperature of the corrosive liquid is controlled to be 75 ℃, the time is 3 hours, the sample is taken out and washed clean by ultrapure water repeatedly, and then the sample is dried by cold air for standby;
step three: reduction heat treatment:
placing the chemically etched iron sheet in a tube furnace at a volume ratio of 10% 2 And 90% Ar, heat-treated at 500 ℃ for 1.5 hours, naturally cooled, and then taken out to obtain an electrode material.
The obtained electrode material is used as a working electrode, a graphite sheet is used as a counter electrode, saturated Hg/HgO is used as a reference electrode to form a three-electrode system, and 1mol/L KOH aqueous solution is used as electrolyte to carry out linear voltammetry tests at 25 ℃, 55 ℃ and 75 ℃. The results are shown in FIG. 2 (85% solution resistance compensation), and it can be seen that the electrode material is at 40mA/cm 2 The overpotential at current density is 272mV, 252mV and 235mV at 100mA/cm 2 The overpotentials at current densities were 323mV, 296mV and 270mV, respectively. It is 40mA/cm at 25 DEG C 2 The electrode potential fluctuation for the next 48 hours of continuous operation was 1.525. + -. 10mV (relative to a standard hydrogen electrode) as shown in FIG. 3.
Example 3
Preparing an electrode material by:
the method comprises the following steps: rust removal and polishing pretreatment of iron sheets:
polishing an iron sheet with the thickness of 0.3mm in 3mol/L HCl for 20s, taking out, repeatedly washing the iron sheet with ultrapure water, then cleaning the iron sheet in the ultrapure water for 20 minutes, taking out, and drying the iron sheet with cold air for later use;
step two: chemical corrosion:
preparing 0.01mol/L CoSO 4 And 0.1mol/L Na 2 SO 4 The water solution is corrosive liquid, the iron sheet after polishing pretreatment is suspended in the corrosive liquid, the temperature of the corrosive liquid is controlled to be 55 ℃, the time is 5 hours, the sample is taken out and washed clean by ultrapure water repeatedly, and then the sample is dried by cold air for standby;
step three: reduction heat treatment:
placing the chemically etched iron sheet in a tube furnace at a volume ratio of 10% 2 And 90% Ar, heat-treated at 500 ℃ for 1.5 hours, naturally cooled, and then taken out to obtain an electrode material.
The obtained electrode material is used as a working electrode, a graphite sheet is used as a counter electrode, saturated Hg/HgO is used as a reference electrode to form a three-electrode system, 1mol/L KOH aqueous solution is used as electrolyte, and linear voltammetry tests are respectively carried out at 25 ℃, 55 ℃ and 75 ℃. The results are shown in FIG. 4 (85% solution resistance compensation), and it can be seen that it is at 40mA/cm 2 Overpotential at current density of 308mV, 269mV and 249mV at 100mA/cm 2 The overpotentials at the current densities were 368mV, 332mV, and 274mV, respectively.
The above examples are merely preferred embodiments of the present invention, and the scope of the present invention is not limited to the above examples. All technical schemes belonging to the idea of the invention belong to the protection scope of the invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention, and such modifications and embellishments should also be considered as within the scope of the invention.

Claims (10)

1. The preparation method of the high-activity oxygen evolution electrode material with the thermocatalytic effect is characterized by comprising the following steps of:
placing the metal base material with a smooth surface in a mixed aqueous solution of transition metal sulfate and alkali metal sulfate to carry out self-assembly reaction, and then cleaning and drying to obtain a base material with a corroded surface;
and heating the base material with the corroded surface in a reducing gas atmosphere at the temperature of 400-600 ℃ to perform a reduction reaction to obtain the high-activity oxygen evolution electrode material with the thermocatalysis effect.
2. The method of claim 1, wherein the substrate is selected from iron sheet.
3. The method according to claim 1, wherein the self-assembly reaction is carried out at a temperature of 20 to 90 ℃ for 0.5 to 6.0 hours.
4. The method according to claim 1, wherein the concentration of the transition metal sulfate is 0.002 to 0.01mol/L, and the concentration of the alkali metal sulfate is 0.01 to 0.1mol/L.
5. The production method according to claim 1, wherein the reducing gas is H 2 And Ar.
6. The method of claim 5, wherein H is 2 And Ar in a volume ratio of (10-50%): (50-90%).
7. The method according to claim 1, wherein the transition metal sulfate is selected from the group consisting of NiSO 4 And/or CoSO 4 (ii) a The alkali metal sulfate is selected from K 2 SO 4 And/or Na 2 SO 4 。
8. The method of claim 1, further comprising: pre-treating the metal substrate, the pre-treating comprising: derusting and polishing the metal base material by using an HCl solution, then carrying out ultrasonic treatment for 5-30 minutes by using ultrapure water, and then carrying out air cooling to obtain a pretreated base material; and carrying out the self-assembly reaction on the pretreated base material.
9. The method according to claim 1, wherein the mixed aqueous solution comprises 0.002 to 0.01mol/L of NiSO 4 、0.002～0.01mol/L CoSO 4 And 0.01 to 0.1mol/L K 2 SO 4 Or 0.01 to 0.1mol/L Na 2 SO 4 The temperature of the self-assembly reaction is 20-90 ℃, the time is 0.5-6.0H, and the reducing gas comprises 10-50% of H by volume 2 And 50-90% of Ar, wherein the temperature of the reduction reaction is 400-600 ℃, and the time is 0.5-3.0 hours.
10. The high-activity oxygen evolution electrode material with a thermocatalytic effect prepared by the preparation method according to any one of claims 1 to 9.
CN202210834408.3A 2022-07-14 2022-07-14 High-activity oxygen evolution electrode material with thermocatalytic effect and preparation method thereof Active CN115142085B (en)

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CN112575336A (en) * 2020-11-19 2021-03-30 天津大学 Method for obtaining super-strong industrial alkaline water oxygen evolution electrode by regulating and controlling anode surface magnetic field
KR20210091891A (en) * 2020-01-15 2021-07-23 한국에너지기술연구원 Method for manufacturing electrode having a catalyst layer including layered double hydroxide(LDH)

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* Cited by examiner, † Cited by third party
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KR20210091891A (en) * 2020-01-15 2021-07-23 한국에너지기술연구원 Method for manufacturing electrode having a catalyst layer including layered double hydroxide(LDH)
CN112575336A (en) * 2020-11-19 2021-03-30 天津大学 Method for obtaining super-strong industrial alkaline water oxygen evolution electrode by regulating and controlling anode surface magnetic field

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