CN109972158A - A kind of anode of electrolytic water and preparation method thereof based on etching process - Google Patents
A kind of anode of electrolytic water and preparation method thereof based on etching process Download PDFInfo
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- CN109972158A CN109972158A CN201910259449.2A CN201910259449A CN109972158A CN 109972158 A CN109972158 A CN 109972158A CN 201910259449 A CN201910259449 A CN 201910259449A CN 109972158 A CN109972158 A CN 109972158A
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Abstract
The invention discloses a kind of anode of electrolytic water and preparation method thereof based on etching process, include metal nickel substrate and metal oxidation state substance, metal oxidation state substance, which is arranged in metallic nickel substrate surface and with metal nickel substrate, to combine together, and when preparation handles metallic nickel substrate cleaning；Metal nickel substrate after cleaning is subjected to corrosion treatment in trivalent ferrous solution；Baking is carried out in hot-air to the metal nickel substrate after corrosion treatment to handle to obtain anode of electrolytic water.The method of the present invention simple process, consumption of raw materials is less, and energy consumption is lower, and equipment requirement is low, is easy to amplify production.
Description
Technical field
The present invention relates to a kind of anode of electrolytic water and preparation method thereof, especially a kind of electrolysis water sun based on etching process
Pole and preparation method thereof.
Background technique
Electrolysis water overall reaction is made of cathode hydrogen evolution half-reaction and Oxygen anodic evolution half-reaction coupling, and hydrogen is opposite high price
The target product of value, and oxygen is the by-product of low value.The absolute difference of liberation of hydrogen and overpotential for oxygen evolution reflects electrolytic water electric
The main part that resistance is overcome needed for capable of driving, determines two interpolar slot pressures, the i.e. size of electrolytic cell cell voltage value.From yin
The positive matched angle analysis in the two poles of the earth, Oxygen anodic evolution kinetics is more slow and higher oxygen-oxygen bond forms activation energy barrier
Determine that oxygen evolution reaction is the conditioning step of water electrolysis hydrogen production.Therefore exploitation has the electrolysis water sun of efficiently analysis oxygen electro catalytic activity
Pole is of great significance for water electrolysis hydrogen production.
Conventional alkaline anode of electrolytic water is mainly metal nickel-base material, including nickel screen, nickel foam, porous nickel plate/nickel sheet etc..
During electrolysis water, metallic nickel is since anode polarization acts on, and surface can generate nickel oxide/hydroxide layer, the layer
Substance is the electro catalytic activity layer of oxygen evolution reaction.However, nickel oxide or hydroxide are that analysis oxygen catalytic activity is lower
Catalyst, therefore traditional anode of electrolytic water has much room for improvement.Analysis oxygen electro-catalysis of the introducing of iron component for raising nickel compound
Activity has significant facilitation.Ferronickel combination of compounds at present, including iron-doped nickel oxide, nickel iron hydroxide, ferronickel phosphorus
Compound, ferronickel sulfide, ferronickel nitride etc. are the analysis good anode catalysts of oxygen electrocatalysis characteristic.Therefore, by ferronickel group
Polymerisable compounds, which introduce anode of electrolytic water, can be efficiently modified Oxygen anodic evolution electro catalytic activity, to promote whole electrolysis water overall reaction
It carries out, reduces electrolytic cell cell voltage.
In traditional electrode preparation method, the method that catalyst layer introduces electrode surface mainly there are into plating, hydrothermal growth, gas
Mutually deposition, mechanical swabbing coating, magnetron sputtering etc..The electrode that these methods obtain, on the one hand, exist between substrate and catalyst
Apparent phase interface is combined together by mechanical adhesion, and catalyst obscission easily occurs during long-time service,
Catalytic performance is caused to decline, service life reduction；On the other hand, during these process implementings, energy consumption is higher, operating condition is more severe
Quarter, equipment cost are big.Therefore, improve technology for preparing electrode, high-performance is prepared by low cost, temperate condition, low energy consumption approach
Electrode becomes the technological difficulties of electrode linguistic term.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of based on the anode of electrolytic water of etching process and its preparation side
Method.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of anode of electrolytic water based on etching process, it is characterised in that: include metal nickel substrate and metal oxidation state substance, gold
Belong to oxidation state species to be arranged in metallic nickel substrate surface and combine together with metal nickel substrate.
2, a kind of anode of electrolytic water based on etching process described in accordance with the claim 1, it is characterised in that: the metal
Oxidation state species include one or both of nickel oxide, nickel hydroxide, and metal oxidation state substance also includes di-iron trioxide, oxygen
Change one or more of ferrous iron, iron hydroxide, Fe2O3 doping nickel oxide, Fe2O3 doping nickel hydroxide.
3, a kind of anode of electrolytic water based on etching process described in accordance with the claim 1, it is characterised in that: the metal
Nickel substrate uses nickel screen or nickel foam.
4, a kind of anode of electrolytic water preparation method based on etching process, it is characterised in that comprise the steps of:
Step 1: metallic nickel substrate cleaning is handled；
Step 2: the metal nickel substrate after cleaning is subjected to corrosion treatment in trivalent ferrous solution；
Step 3: baking processing is carried out in hot-air to the metal nickel substrate after corrosion treatment.
5, a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that:
Metal nickel substrate uses nickel screen or nickel foam in the step 1.
6, a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that:
The step 1 is specially metallic substrates to be placed in acetone soln to be cleaned by ultrasonic 10 ~ 30 minutes, then cleaned repeatedly with ethyl alcohol, is removed
Remove metal surface oil layer；Then metallic substrates are placed in ultrasound 5 ~ 25 minutes in the hydrochloric acid solution that concentration is 1 ~ 6 mole every liter,
And 10 ~ 30 minutes are stood, then cleaned repeatedly with distilled water, remove oxidation on metal surface layer.
7, a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that:
The step 2 is specially that the metallic substrates after cleaning treatment are molten in the ferric iron of 1 ~ 600 mM every liter, 5 ~ 90 degrees Celsius
1 ~ 300 minute is stood in liquid, it is drained and standby that metallic substrates are then taken out from solution.
8, exist according to a kind of anode of electrolytic water preparation method based on etching process, feature described in claim 4 or 7
In: the solute formula of the trivalent ferrous solution is iron chloride, in ferric sulfate, ferric nitrate, ferric bromide, the potassium ferricyanide, ammonium ferric sulfate
One or more.
9, a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that:
The step 3 is specially the heat that the metallic substrates after the progress corrosion treatment in trivalent ferrous solution are placed in 50 ~ 500 degrees Celsius
It is toasted in air, the duration is 10 ~ 300 minutes；Metallic substrates after to be processed are down to room temperature, then repeatedly with distilled water
Flushing processing obtains the anode of electrolytic water based on etching process after dry.
Compared with prior art, the present invention having the following advantages that and effect: it is rotten by ferric iron that The present invention gives one kind
The thinking of erosion and air heat treatment obtains the process of high-performance anode of electrolytic water a kind of, in trivalent ferrous solution, metal surface
Layer nickel simple substance is converted into nickelous under ferric oxidation, while ferric iron part is reduced and is converted into ferrous iron；?
In hot-air, nickelous, ferrous iron, ferric iron are converted into the metal oxidation state substance of Surface Fe component modification, to obtain height
The superficial layer catalyst of oxygen evolution activity；Traditional pure nickel anode is substituted using this in-situ modification anode of electrolytic water, it can be with
Electrolysis water anode and cathode potential difference is effectively reduced, reduces electrolysis water consumption, improves electrolysis water efficiency.In addition, side provided by the invention
Method simple process, consumption of raw materials is less, and energy consumption is lower, and equipment requirement is low, is easy to amplify production.
Detailed description of the invention
Fig. 1 is the anode of electrolytic water that the etching process of the embodiment of the present invention 1 obtains and does not carry out the nickel screen of any processing
Optics picture.
Fig. 2 is the nickel screen surface scan electron microscopic picture for not carrying out any processing of the invention.
Fig. 3 is the anode of electrolytic water surface scan electron microscopic picture and correspondence that the etching process of the embodiment of the present invention 1 obtains
X-ray energy spectrogram.
Fig. 4 is the anode of electrolytic water surface scan electron microscopic picture and correspondence that the etching process of the embodiment of the present invention 2 obtains
X-ray energy spectrogram.
Fig. 5 is the three electrolysis waterline voltammetric scan curve graphs of the embodiment of the present invention.
Fig. 6 is the two electrolysis water time-measuring electric potential curve graphs of the embodiment of the present invention.
Specific embodiment
Below by embodiment, the present invention is described in further detail, following embodiment be explanation of the invention and
The present invention does not limit to and following embodiment.
A kind of anode of electrolytic water based on etching process of the invention, include metal nickel substrate and metal oxidation state substance,
Metal oxidation state substance is arranged in metallic nickel substrate surface and combines together with metal nickel substrate.Metal oxidation state substance is by iron
Component is modified, and ferro element is contained；The metal oxidation state substance of Surface Fe component modification is based on Ni-based bottom surface layer nickel simple substance and exists
Directly conversion is formed under ferric iron corrosiveness and air thermal processes act.
Metal oxidation state substance includes nickel oxide (NiO), nickel hydroxide (Ni (OH)2One or both of), metal oxygen
Changing state substance also includes di-iron trioxide (Fe2O3), ferrous oxide (FeO), iron hydroxide (Fe (OH)3), Fe2O3 doping nickel oxide
(FexNi1-xO), Fe2O3 doping nickel hydroxide (FexNi1-x(OH)2One or more of).Metal nickel substrate uses nickel screen or bubble
Foam nickel needs to carry out cleaning treatment before use.
A kind of anode of electrolytic water preparation method based on etching process comprising the steps of:
Step 1: metallic nickel substrate cleaning is handled: metallic substrates is placed in acetone soln and are cleaned by ultrasonic 10 ~ 30 minutes, then
It is cleaned repeatedly with ethyl alcohol, removes metal surface oil layer；Then it is molten metallic substrates to be placed in the hydrochloric acid that concentration is 1 ~ 6 mole every liter
Ultrasound 5 ~ 25 minutes in liquid, and 10 ~ 30 minutes are stood, then cleaned repeatedly with distilled water, remove oxidation on metal surface layer.Wherein,
Metal nickel substrate uses nickel screen or nickel foam.
Step 2: the metal nickel substrate after cleaning is subjected to corrosion treatment in trivalent ferrous solution: after cleaning treatment
Metallic substrates stand 1 ~ 300 minute in 1 ~ 600 mM every liter, 5 ~ 90 degrees Celsius of trivalent ferrous solution, then from solution
It is drained and standby to take out metallic substrates.Wherein, the solute formula of trivalent ferrous solution are as follows: iron chloride (FeCl3), ferric sulfate (Fe2
(SO4)3), ferric nitrate (Fe (NO3)3), ferric bromide (FeBr3), the potassium ferricyanide (K3[Fe(CN)6]), ammonium ferric sulfate (NH4Fe
(SO4)2One or more of).
Step 3: baking processing is carried out in hot-air to the metal nickel substrate after corrosion treatment: will be in trivalent ferrous solution
Metallic substrates after middle carry out corrosion treatment, which are placed in 50 ~ 500 degrees Celsius of hot-air, is toasted, and the duration is 10 ~ 300
Minute；Metallic substrates after to be processed are down to room temperature, then are handled with distilled water repeated flushing, are obtained after dry based on corrosion work
The anode of electrolytic water of skill.
Below by specific embodiment, the present invention is described further；
Embodiment 1:
(1) metal nickel screen cleaning treatment:
Metal nickel screen is placed in acetone soln and is cleaned by ultrasonic 20 minutes, then is cleaned repeatedly with ethyl alcohol, to remove metal surface oil
Rouge layer；Then metallic substrates are placed in ultrasound 10 minutes in the hydrochloric acid solution that concentration is 4 moles every liter, and stand 15 minutes, then
It is cleaned repeatedly with distilled water, to remove oxidation on metal surface layer.
(2) the metal nickel screen after cleaning treatment carries out corrosion treatment in trivalent ferrous solution:
Metal nickel screen after cleaning treatment is stood 50 minutes in 5 mMs every liter, 25 degrees Celsius of potassium ferricyanide solution；So
It is drained and standby that metal nickel screen is taken out from solution afterwards.
(3) the metal nickel screen after carrying out corrosion treatment in trivalent ferrous solution carries out baking processing in hot-air:
Metal nickel screen after the progress corrosion treatment in potassium ferricyanide solution is placed in 100 degrees Celsius of hot-air and is dried
Roasting, the duration is 120 minutes；Metal nickel screen after to be processed is down to room temperature, then is handled with distilled water repeated flushing, after dry
Obtain the anode of electrolytic water based on etching process.
Anode of electrolytic water based on etching process and the nickel screen optics picture of any processing is not carried out as shown in Figure 1, wherein
Left side picture is the nickel screen optics picture for not carrying out any processing, and the right picture is to be obtained based on the etching process in embodiment 1
Anode of electrolytic water.After treatment, apparent color change has been sent out on nickel screen surface.Fig. 2, which is illustrated, does not carry out any processing
Nickel screen surface scan electron microscopic picture, shows smooth structure, and wherein illustration is surface magnified sweep electron microscopic picture.Fig. 3 is illustrated
Anode of electrolytic water surface scan electron microscopic picture and corresponding X-ray energy spectrogram in the embodiment based on etching process, ferro element
It is uniformly distributed in nickel screen surface.Wherein, Fig. 3 a, b, c are respectively the electrolysis water sun obtained based on the etching process in embodiment 1
Pole surface scanning electron microscopic picture.Fig. 3 d is anode of electrolytic water Surface Oxygen (O), the iron obtained based on the etching process in embodiment 1
(Fe), the X-ray energy spectrogram of nickel (Ni) element.
(4) in-situ modification anode of electrolytic water analyses three electrode test of oxygen performance:
Using the test method of linear voltammetric scan to treated metal nickel screen carries out analysis oxygen performance test.Test uses three electricity
Polar body system, the anode of electrolytic water based on etching process is working electrode in the embodiment, and silver/silver chlorate is reference electrode, platinum guaze
For auxiliary electrode, electrolyte uses 1 mole every liter of quality of potassium hydroxide solution, and sweep speed is 5 millivolts of per second, scanning ranges
It is 0 volt to 1 volt.(CHI660E, Shanghai Chen Hua Instrument Ltd.) tests it and analyses oxygen performance, test on electrochemical workstation
As a result corresponding diagram 5, wherein J is current density, unit mA cm-2It is every square centimeter for milliampere；E is potential difference, and unit V is volt；
Control smaple is comparative example, and Sample 1 is embodiment 1, and Sample 2 is embodiment 2；Ag/AgCl is 3 moles of filling
The silver of every liter of Klorvess Liquid/silver chloride reference electrode.
Table 1: overpotential of the difference test electrode under different current densities
(5) in-situ modification anode of electrolytic water analyses two electrode test of oxygen performance:
Analysis oxygen performance test is carried out to metal nickel screen using chronoptentiometry.Test uses two electrode systems, base in the embodiment
It is anode in the anode of electrolytic water of etching process, for industrial porous nickel screen electrode as cathode, electrolyte is every using 1 mole of quality
The potassium hydroxide solution risen, current density are 50 milliamperes every square centimeter, and the testing time is 24 hours.On electrochemical workstation
(CHI660E, Shanghai Chen Hua Instrument Ltd.) tests the electrolysis water stability of the electrode combination, test result corresponding diagram
6, wherein Time is electrolysis time, and unit h is hour.
Embodiment 2:
The present embodiment provides a kind of anode of electrolytic water obtained based on etching process.
(1) metal nickel screen cleaning treatment:
Metal nickel screen is placed in acetone soln and is cleaned by ultrasonic 20 minutes, then is cleaned repeatedly with ethyl alcohol, to remove metal surface oil
Rouge layer；Then metallic substrates are placed in ultrasound 10 minutes in the hydrochloric acid solution that concentration is 4 moles every liter, and stand 15 minutes, then
It is cleaned repeatedly with distilled water, to remove oxidation on metal surface layer.
(2) the metal nickel screen after cleaning treatment carries out corrosion treatment in trivalent ferrous solution:
Metal nickel screen after cleaning treatment is stood 30 minutes in 20 mMs every liter, 20 degrees Celsius of bromination ferrous solution；So
It is drained and standby that metal nickel screen is taken out from solution afterwards.
(3) the metal nickel screen after carrying out corrosion treatment in trivalent ferrous solution carries out baking processing in hot-air:
Metal nickel screen after the progress corrosion treatment in bromination ferrous solution is placed in 100 degrees Celsius of hot-air and is toasted,
Duration is 120 minutes；Metal nickel screen after to be processed is down to room temperature, then is handled with distilled water repeated flushing, is after dry
Obtain the anode of electrolytic water based on etching process.
Fig. 4 illustrates anode of electrolytic water surface scan electron microscopic picture and corresponding X in the embodiment based on etching process
Radial energy spectrogram, ferro element are uniformly distributed in nickel screen surface.Wherein, Fig. 4 a, b, c are respectively based on the corrosion in embodiment 2
The anode of electrolytic water surface scan electron microscopic picture that technique obtains.Fig. 4 d is the electrolysis obtained based on the etching process in embodiment 2
Water anode surface oxygen (O), iron (Fe), nickel (Ni) element X-ray energy spectrogram.
(4) in-situ modification anode of electrolytic water analyses three electrode test of oxygen performance:
Using the test method of linear voltammetric scan to treated metal nickel screen carries out analysis oxygen performance test.Test uses three electricity
Polar body system, the anode of electrolytic water based on etching process is working electrode in the embodiment, and silver/silver chlorate is reference electrode, platinum guaze
For auxiliary electrode, electrolyte uses 1 mole every liter of quality of potassium hydroxide solution, and sweep speed is 5 millivolts of per second, scanning ranges
It is 0 volt to 1 volt.(CHI660E, Shanghai Chen Hua Instrument Ltd.) tests it and analyses oxygen performance, test on electrochemical workstation
As a result corresponding diagram 5, wherein J is current density, unit mA cm-2It is every square centimeter for milliampere；E is potential difference, and unit V is volt；
Control smaple is comparative example, and Sample 1 is embodiment 1, and Sample 2 is embodiment 2；Ag/AgCl is 3 moles of filling
The silver of every liter of Klorvess Liquid/silver chloride reference electrode.
(5) in-situ modification anode of electrolytic water analyses two electrode test of oxygen performance:
Analysis oxygen performance test is carried out to metal nickel screen using chronoptentiometry.Test uses two electrode systems, base in the embodiment
It is anode in the anode of electrolytic water of etching process, for industrial porous nickel screen electrode as cathode, electrolyte is every using 1 mole of quality
The potassium hydroxide solution risen, current density are 50 milliamperes every square centimeter, and the testing time is 24 hours.On electrochemical workstation
(CHI660E, Shanghai Chen Hua Instrument Ltd.) tests the electrolysis water stability of the electrode combination, test result corresponding diagram
6, wherein Time is electrolysis time, and unit h is hour.
Comparative example:
Comparative example directlys adopt metal nickel screen as anode of electrolytic water.
(1) metal nickel screen cleaning treatment:
Metal nickel screen is placed in acetone soln and is cleaned by ultrasonic 20 minutes, then is cleaned repeatedly with ethyl alcohol, to remove metal surface oil
Rouge layer；Then metallic substrates are placed in ultrasound 10 minutes in the hydrochloric acid solution that concentration is 4 moles every liter, and stand 15 minutes, then
It is cleaned repeatedly with distilled water, to remove oxidation on metal surface layer.
(2) the metal nickel screen after cleaning treatment analyses three electrode test of oxygen performance:
Analysis oxygen performance test is carried out to metal nickel screen using the test method of linear voltammetric scan.Test uses three-electrode system,
Metal nickel screen after cleaning treatment is working electrode, and silver/silver chlorate is reference electrode, and platinum guaze is auxiliary electrode, and electrolyte uses
The potassium hydroxide solution that 1 mole every liter of quality, sweep speed are 5 millivolts per second, and scanning range is 0 volt to 1 volt.In electrochemistry work
It stands and above (CHI660E, Shanghai Chen Hua Instrument Ltd.) tests its analysis oxygen performance, test result corresponding diagram 5.
(3) the metal nickel screen after cleaning treatment analyses two electrode test of oxygen performance:
Analysis oxygen performance test is carried out to metal nickel screen using chronoptentiometry.It tests and uses two electrode systems, after cleaning treatment
Metal nickel screen is anode, and for industrial porous nickel screen electrode as cathode, electrolyte is molten using 1 mole every liter of quality of potassium hydroxide
Liquid, current density are 50 milliamperes every square centimeter, and the testing time is 24 hours.(CHI660E, Shanghai on electrochemical workstation
Chen Hua Instrument Ltd.) test the electrolysis water stability of the electrode combination, test result corresponding diagram 6.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, only
It should all belong to and guarantor of the invention without departing from the content or beyond the scope defined by this claim of description of the invention
Protect range.
Claims (9)
1. a kind of anode of electrolytic water based on etching process, it is characterised in that: include metal nickel substrate and metal oxidation state substance,
Metal oxidation state substance is arranged in metallic nickel substrate surface and combines together with metal nickel substrate.
2. a kind of anode of electrolytic water based on etching process described in accordance with the claim 1, it is characterised in that: the metal oxidation
State substance includes one or both of nickel oxide, nickel hydroxide, and metal oxidation state substance also includes di-iron trioxide, oxidation Asia
One or more of iron, iron hydroxide, Fe2O3 doping nickel oxide, Fe2O3 doping nickel hydroxide.
3. a kind of anode of electrolytic water based on etching process described in accordance with the claim 1, it is characterised in that: the metal is Ni-based
Bottom uses nickel screen or nickel foam.
4. a kind of anode of electrolytic water preparation method based on etching process, it is characterised in that comprise the steps of:
Step 1: metallic nickel substrate cleaning is handled；
Step 2: the metal nickel substrate after cleaning is subjected to corrosion treatment in trivalent ferrous solution；
Step 3: baking processing is carried out in hot-air to the metal nickel substrate after corrosion treatment.
5. a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that: described
Metal nickel substrate uses nickel screen or nickel foam in step 1.
6. a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that: described
Step 1 is specially metallic substrates to be placed in acetone soln to be cleaned by ultrasonic 10 ~ 30 minutes, then cleaned repeatedly with ethyl alcohol, removes gold
Metal surface oil layer；Then metallic substrates are placed in ultrasound 5 ~ 25 minutes in the hydrochloric acid solution that concentration is 1 ~ 6 mole every liter, and quiet
It sets 10 ~ 30 minutes, then cleaned repeatedly with distilled water, removes oxidation on metal surface layer.
7. a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that: described
Step 2 be specially by the metallic substrates after cleaning treatment in 1 ~ 600 mM every liter, 5 ~ 90 degrees Celsius of trivalent ferrous solution
1 ~ 300 minute is stood, it is drained and standby that metallic substrates are then taken out from solution.
8. according to a kind of anode of electrolytic water preparation method based on etching process described in claim 4 or 7, it is characterised in that:
The solute formula of the trivalent ferrous solution is iron chloride, ferric sulfate, ferric nitrate, ferric bromide, the potassium ferricyanide, one in ammonium ferric sulfate
Kind is several.
9. a kind of anode of electrolytic water preparation method based on etching process according to claim 4, it is characterised in that: described
Step 3 is specially the hot-air that the metallic substrates after the progress corrosion treatment in trivalent ferrous solution are placed in 50 ~ 500 degrees Celsius
In toasted, the duration be 10 ~ 300 minutes；Metallic substrates after to be processed are down to room temperature, then with distilled water repeated flushing
Processing obtains the anode of electrolytic water based on etching process after dry.
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| CN110952111A (en) * | 2019-10-31 | 2020-04-03 | 南通安思卓新能源有限公司 | Two-step oxidation synthesized electrolytic water anode and preparation method thereof |
| US10975482B1 (en) * | 2020-02-27 | 2021-04-13 | Haiming Li | Self-derivative iron-containing nickel anode for water electrolysis |
| WO2021135505A1 (en) * | 2019-12-31 | 2021-07-08 | 华南理工大学 | Compact hydrogen-oxygen generator |
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| WO2021135505A1 (en) * | 2019-12-31 | 2021-07-08 | 华南理工大学 | Compact hydrogen-oxygen generator |
| US10975482B1 (en) * | 2020-02-27 | 2021-04-13 | Haiming Li | Self-derivative iron-containing nickel anode for water electrolysis |
| IT202000020575A1 (en) * | 2020-08-28 | 2022-02-28 | Industrie De Nora Spa | ELECTRODE FOR GAS EVOLUTION IN ELECTROLYTIC PROCESSES |
| WO2022043519A1 (en) | 2020-08-28 | 2022-03-03 | Industrie De Nora S.P.A. | Electrode for gas evolution in electrolytic processes |
| EP4060081A1 (en) * | 2021-03-16 | 2022-09-21 | Industrie De Nora S.P.A. | Electrode for gas evolution in electrolytic processes |
| WO2022194911A1 (en) | 2021-03-16 | 2022-09-22 | Industrie De Nora S.P.A. | Electrode for gas evolution in electrolytic processes |
| WO2023283005A1 (en) * | 2021-07-08 | 2023-01-12 | University Of Houston System | Universal one-step method to make fe-based (oxy)hydroxides as efficient oer catalysts for seawater electrolysis |
| CN114481284A (en) * | 2021-12-28 | 2022-05-13 | 清华大学 | Nickel electrode and preparation method and application thereof |
| CN114540861A (en) * | 2022-02-25 | 2022-05-27 | 南通大学 | Preparation method of nanoneedle and nanosheet nickel-based spray electrode material |
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