CN106967997A - A kind of efficient self-supporting catalysis electrode and its preparation method and application - Google Patents
A kind of efficient self-supporting catalysis electrode and its preparation method and application Download PDFInfo
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
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- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
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- 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
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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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
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- C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
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Abstract
The invention discloses a kind of efficient self-supporting catalysis electrode and its preparation method and application, prepare ferronickel molybdenum manganese alloy first, wherein the amount percentage of the material of nickel is 5% 25%, the amount percentage of the material of iron is 5% 25%, the amount percentage of the material of molybdenum is 5% 25%, and surplus is manganese.The certain alloy strip of thickness or alloy sheets are prepared using the method for rolling and getting rid of band.Using de- alloying process, including chemical removal alloying and electrochemistry removal alloying, efficient self-supporting catalysis electrode is prepared.The advantage of this electrode material is：Three-dimensional porous self-supporting, without any supporter and binding agent；Non-precious Metal Catalysts electrode, material content enriches, cheap, and preparation condition is controllable；High current steady operation；With double catalysis, electrolysis aquatic products hydrogen and production oxygen can be carried out simultaneously in alkaline electrolytic bath, this self-supporting catalytic electrode material can be applied to catalysis production hydrogen production oxygen, and the field such as fuel cell, is a kind of new and effective catalysis electrode.
Description
Technical field
The invention belongs to be catalyzed the technical field of water electrolysis, especially a kind of self-supporting catalysis electrode for being catalyzed water electrolysis and
Its preparation method and the application in terms of catalysis water electrolysis simultaneous hydrogen production and production oxygen.
Background technology
With social economy's accelerated development, environmental pollution increasingly sharpens with energy crisis, and people are to cleaning, sustainable new
The energy and novel energy storage device are increasingly paid attention to.Hydrogen with its cleaning, it is efficient, pollution-free by extensive concern.In nature
Hydrogen content is few and impure, therefore extensive hydrogen manufacturing is the most important thing.In known various hydrogen producing technologies, electrolysis water can be by
Intermittence, uncontrollable solar energy, wind energy and water can etc. new energy form be converted into hydrogen storage and can reconcile controllability to realize.
But in actual production, water electrolysis needs to overcome very big overpotential, causes power consumption high, and efficiency declines.By researcher
Be continually striving to, discovery can effectively reduce the overpotential of water electrolysis using catalysis electrode, so as to reduce energy consumption, improve efficiency.
Now, the noble metal and iridium of platinum class, ruthenium oxide are respectively electrolysis aquatic products hydrogen and produce the maximally effective catalysis electrode of oxygen, but they
Reserves are low, price shortcoming causes its extensive use to be difficult to.Therefore, the efficient, base metal of rich content is researched and developed to urge
Polarizing electrode causes the concern of people.
In recent years ,/doping, a series of catalysis electrode materials are combined to non-noble transition metal again from noble metal to precious metal doping
Material exploitation for reduction water electrolysis overpotential and effort.For example, metal phosphide, metal carbides, molybdenum disulfide class are contour
Effect catalytic water electrolytic hydrogen production catalytic electrode material (E.J.Popczun, J.R.McKone, C.G.Read, A.J.Biacchi,
A.M.Wiltrout, N.S.Lewis, R.E.Schaak, J.Am.Chem.Soc.135 (2013) 9267e9270)；And phosphatization cobalt,
The catalysis water electrolysis production oxygen catalytic electrode material such as transition metal oxide and hydroxide (J.-X.Feng, H.Xu, Y.-
T.Dong, S.-H.Ye, Y.-X.Tong, G.-R.Li, Angew.Chem.128 (2016) 3758e3762).Current many catalysis
Electrode has good catalytic performance under strong acid or basic conditions, but one side meets production hydrogen and produces the optimal of oxygen simultaneously
The efficient catalytic electrode of condition is few, and on the other hand, two kinds of optimal conditions of work can not be used in an electrolytic cell, made
Obtain cell construction to complicate, increase cost.Therefore, double-function catalyzing electrode is explored under the identical condition of work of an electrolytic cell
It is still a huge challenge that hydrogen, which can be produced, and can produce oxygen again.
The content of the invention
The technical problems to be solved by the invention are that, to reduce the overpotential of water electrolysis, raising efficiency simplifies electrolytic cell knot
Structure, it is proposed that a kind of abundant raw material, efficient self-supporting catalysis electrode and preparation method thereof and catalytic water electrolytic hydrogen production and production oxygen
The application of aspect, prepared catalysis electrode both can as catalytic water electrolytic hydrogen production negative pole, can be used for be catalyzed water electrolysis
The positive pole of oxygen is produced, is a kind of difunctional catalysis electrode.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of efficient self-supporting catalysis electrode
Preparation method, comprises the following steps：
(1) prepared by alloy：Prepare in ferronickel molybdenum manganese alloy, the alloy, the amount percentage of the material of nickel is 5%-25%,
The amount percentage of the material of iron is in 5%-25%, and the amount percentage of the material of molybdenum is in 5%-25%, and surplus is manganese；The alloy quilt
It is processed into alloy strip or alloy sheets of the thickness at 20-500 μm；
(2) alloy for preparing step (1) prepares efficient self-supporting catalysis electrode using de- alloyage process, described
Efficient self-supporting catalysis electrode aperture be mainly distributed on 2 nanometers in 500 nanometer ranges, specific surface area is 10~80m2/g。
De- alloyage process in the step (2) is that the de- alloyage process of chemistry or electrochemistry take off alloyage process.
The de- alloyage process of chemistry is step (1) to be prepared into alloy strip or alloy sheets are dipped in acid solution
Carry out de- alloying process, after the completion of be dried in vacuo.
It is preferred that, the acid solution is concentration 0.005mol/L~2mol/L acid solutions.
It is to be worked electrode with alloy strip or alloy sheets made from step (1) that the electrochemistry, which takes off alloyage process, is adopted
Alloying is taken off in faintly acid salting liquid with three-electrode system, it is -0.45V~-0.8V to take off alloying voltage, takes off alloying time
For 500 seconds~40000 seconds.
It is preferred that, the faintly acid salt is for the strong acid weak base salting liquid of concentration 0.5mol/L~3mol/L ammoniums.
Efficient self-supporting catalysis electrode made from the step (2), according to the amount optimization of material than being Ni: Fe: Mo=5: 2
: 1 or 2: 1.2: 1 or 3: 1: 1 or 1: 1: 1 or 8: 2: 1.
The alloy of the step (1) is prepared using the method for rolling or getting rid of band.
Efficient self-supporting catalysis electrode made from above-mentioned preparation method.
Efficient application of the self-supporting catalysis electrode in terms of electrolysis water made from above-mentioned preparation method.
The beneficial effects of the invention are as follows：Obtained catalysis electrode 1) three-dimensional porous self-supporting, without any supporter and viscous
Tie agent；2) Non-precious Metal Catalysts electrode, material content enriches, cheap, and preparation condition is controllable；3) the stable work of high current
Make, current density may be up to 1000mA/cm in production hydrogen2More than, it is 100mA/cm in current density2And 200mA/cm2Overpotential point
Wei not 133mV and 211mV；Produce oxygen in current density be 10mA/cm2And 100mA/cm2Overpotential be respectively 265mV and
367mV, when standard hydrogen potential is 2V, current density is up to 632mA/cm2；4) there are double catalysis, can be in alkaline electrolysis
Electrolysis aquatic products hydrogen and production oxygen are carried out in groove simultaneously, when voltage is 1.54V, current density is up to 10mA/cm2, show advantageous
Catalytic performance.The popularity and high current high stability of raw material, have been greatly facilitated popularity and the electric energy conversion of application
It is a kind of new and effective double-function catalyzing electrode for the efficient energy conversion of chemical energy.
Brief description of the drawings
Fig. 1 be the catalysis electrode obtained in embodiment 1 SEM figure (A be acquisition efficient self-supporting catalysis electrode
SEM exterior views；B is the SEM sectional views of the efficient self-supporting catalysis electrode obtained)；
Fig. 2 is the EDS figures of the efficient self-supporting catalysis electrode obtained in embodiment 1；
Fig. 3 is the catalytic water electrolytic hydrogen production in alkaline electrolyte of the efficient self-supporting catalysis electrode obtained in embodiment 1
Performance curve (i.e. current density is with reversible hydrogen electrode potential change curve)；
Fig. 4 catalytic water electrolytic hydrogen production institutes in alkaline electrolyte for the efficient self-supporting catalysis electrode that is obtained in embodiment 1
Obtain catalytic stability curve (i.e. under constant voltage, current density changes over time curve)；
The water electrolysis that is catalyzed in alkaline electrolyte of efficient self-supporting catalysis electrodes of the Fig. 5 to be obtained in embodiment 1 produces oxygen
Performance curve (i.e. current density is with reversible hydrogen electrode potential change curve)；
Fig. 6 is catalyzed water electrolysis production oxygen institute for the efficient self-supporting catalysis electrode obtained in embodiment 1 in alkaline electrolyte
Obtain catalytic stability curve (i.e. under constant voltage, current density changes over time curve)；
Fig. 7 be in embodiment 1 the efficient self-supporting catalysis electrode that obtains in alkaline electrolytic bath as double-function catalyzing electricity
The performance curve of pole electrolysis water.
Fig. 8 be in embodiment 1 the efficient self-supporting catalysis electrode that obtains in alkaline electrolytic bath as double-function catalyzing electricity
The stability curve of pole electrolysis water.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
The preparation method of the efficient self-supporting catalysis electrode of the present invention, comprises the following steps：
(1) prepared by alloy：Prepare in ferronickel molybdenum manganese alloy, the alloy, the amount percentage of the material of nickel is 5%-25%,
The amount percentage of the material of iron is in 5%-25%, and the amount percentage of the material of molybdenum is in 5%-25%, and surplus is manganese；The alloy quilt
It is processed into alloy strip or alloy sheets of the thickness at 20-500 μm；
(2) alloy for preparing step (1) prepares efficient self-supporting catalysis electrode using de- alloyage process, described
Efficient self-supporting catalysis electrode aperture be mainly distributed as 2 nanometers in 500 nanometer ranges, specific surface area is 10~80m2/g。
De- alloyage process in the step (2) is that the de- alloyage process of chemistry or electrochemistry take off alloyage process.
The de- alloyage process of chemistry is step (1) to be prepared into alloy strip or alloy sheets are dipped in acid solution
Carry out de- alloying process, after the completion of be dried in vacuo.
It is preferred that, the acid solution is concentration 0.005mol/L~2mol/L acid solutions.
It is to be worked electrode with alloy strip or alloy sheets made from step (1) that the electrochemistry, which takes off alloyage process, is adopted
Alloying is taken off in faintly acid salting liquid with three-electrode system, it is -0.45V~-0.8V to take off alloying voltage, takes off alloying time
For 500 seconds~40000 seconds.
It is preferred that, the faintly acid salt is the strong acid weak base salting liquid that concentration is 0.5mol/L~3mol/L ammoniums.
Efficient self-supporting catalysis electrode made from the step (2), according to the amount optimization of material than being Ni: Fe: Mo=5: 2
: 1 or 2: 1.2: 1 or 3: 1: 1 or 1: 1: 1 or 8: 2: 1.
The alloy of the step (1) is prepared using the method for rolling or getting rid of band.
Efficient self-supporting catalysis electrode made from above-mentioned preparation method.
Efficient application of the self-supporting catalysis electrode in terms of electrolysis water made from above-mentioned preparation method.
Following examples can make those skilled in the art be more fully appreciated by the present invention, but protection scope of the present invention
It is not limited to following embodiments.
Embodiment 1
(1) prepared by alloy, prepares ferronickel molybdenum manganese alloy, by four kinds of W metals: Fe: Mo: Mn is 20: 5 according to amount of substance ratio:
5: 70, it is put into smelting furnace, melting forms alloy in low vacuum smelting furnace；Then get rid of band in band machine is got rid of and obtain alloy bar
Band, the strip width is 2mm, and thickness is 25 μm.
(2) take off alloying and prepare porous metals,
Alloyage process is taken off using electrochemistry：
Obtained alloy prepared by step (1) takes off alloyage process using electrochemistry and prepares efficient self-supporting catalysis electricity
Pole, de- alloying step is：1mol/L ammonium sulfate as de- alloying solution, the test system used for three-electrode system, its
Middle alloy strip is as working electrode, and platinized platinum is as to electrode, and Ag/AgCl electrodes are used as reference electrode.De- alloying voltage for-
0.6V (vs.Ag/AgCl reference electrodes), it is 7200 seconds to take off alloying time, you can obtain efficient self-supporting catalysis electrode.
Fig. 1 is the SEM figures of the catalysis electrode obtained, it can be seen that the catalyst is the three-dimensional porous knot that two-phase is adulterated
Structure；Fig. 2 is the EDS figures of the catalysis electrode obtained, it can be seen that Ni: Fe: Mn atomic ratio of catalysis electrode is close to 5: 2: 1.
Catalytic water electrolytic hydrogen production production oxygen is carried out in standard three electrode electrolytic cell to catalysis electrode prepared by the above method
Can test；Working electrode is that efficient self-supporting catalysis electrode, reference electrode prepared by the present invention are silver-colored silver chlorate electricity in electrolytic cell
Pole, to electrode be platinized platinum.It should be noted that all electricity obtained using silver silver chloride electrode as reference electrode in electro-catalysis test
Gesture is converted into reversible hydrogen electrode potential in catalytic performance figure.And the electrolysis water in alkaline electrolytic bath is in two electrode conditions
Lower test, the efficient self-supporting catalysis electrode of preparation produces hydrogen respectively as negative pole and positive pole produces oxygen.
Fig. 3, can be with to obtain the catalytic water electrolytic hydrogen production performance map in alkaline electrolyte of efficient self-supporting catalysis electrode
Find out：Catalytic water electrolytic hydrogen production, is 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 133mV and 211mV,
Show with excellent catalysis H2-producing capacity.
Fig. 4 is the catalytic water electrolytic hydrogen production stability diagram in alkaline electrolyte for obtaining efficient self-supporting catalysis electrode.Can
To find out under the conditions of high current density (110mA/cm2), material worked by (10 hours) for a long time, and its catalytic performance is steady
It is fixed, do not decay substantially.
Fig. 5 is catalyzed water electrolysis production oxygen performance map for obtain efficient self-supporting catalysis electrode in alkaline electrolyte, can be with
Find out：Water electrolysis production oxygen is catalyzed, is 10mA/cm in current density2And 100mA/cm2Overpotential is respectively 265mV and 367mV,
When standard hydrogen potential is 2V, current density is up to 632mA/cm2, show that there is outstanding performance in high current catalysis production oxygen.
Fig. 6 produces oxidative stability figure to obtain the water electrolysis that is catalyzed in alkaline electrolyte of efficient self-supporting catalysis electrode.Can
To find out under the conditions of high current density (120mA/cm2), material worked by (10 hours) for a long time, and its catalytic performance is steady
It is fixed, do not decay substantially.
Fig. 7 is used as double-function catalyzing electrolysis water for the efficient self-supporting catalysis electrode obtained in alkaline electrolytic bath
Performance curve, it can be seen that current density be 10mA/cm2And 100mA/cm2Voltage is respectively 1.54V and 1.77V.
Fig. 8 is catalyzed water electrolysis stability diagram for the efficient self-supporting catalysis electrode of acquisition in alkaline (1MKOH) electrolytic cell,
It can be seen that：Electrolysis aquatic products hydrogen and production oxygen can be carried out simultaneously in alkaline electrolytic bath, when voltage is 1.54V, current density is reachable
10mA/cm2, and worked by (10 hours) for a long time, its catalytic performance there is no any change.
Embodiment 2
It is same as Example 1, simply de- alloying time is changed into 1800 seconds.The catalytic performance of gained catalysis electrode：Urge
Change water electrolysis production hydrogen, be 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 241mV and 340mV；It is catalyzed water power
Solution production oxygen, in the case where standard hydrogen potential is 2V, current density is 304mA/cm2。
Embodiment 3
It is same as Example 1, simply de- alloying time is changed into 3600 seconds.The catalytic performance of gained catalysis electrode：Urge
Change water electrolysis production hydrogen, be 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 190mV and 315mV；It is catalyzed water power
Solution production oxygen, in the case where standard hydrogen potential is 2V, current density is 480mA/cm2。
Embodiment 4
It is same as Example 1, simply de- alloying time is changed into 10800 seconds.The catalytic performance of gained catalysis electrode：Urge
Change water electrolysis production hydrogen, be 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 185mV and 312mV；It is catalyzed water power
Solution production oxygen, in the case where standard hydrogen potential is 2V, current density is 496mA/cm2。
Embodiment 5
It is same as Example 1, simply de- alloying time is changed into 14400 seconds.The catalytic performance of gained catalysis electrode：Urge
Change water electrolysis production hydrogen, be 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 189mV and 320mV；It is catalyzed water power
Solution production oxygen, in the case where standard hydrogen potential is 2V, current density is 476mA/cm2。
Embodiment 6
It is same as Example 1, simply it is changed to 10: 10: 10: 70 according to amount of substance ratio by Ni: Fe: Mo: Mn.Gained catalysis electricity
The catalytic performance of pole：Catalytic water electrolytic hydrogen production, is 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 226mV
And 353mV；Water electrolysis production oxygen is catalyzed, in the case where standard hydrogen potential is 2V, current density is 380mA/cm2。
Embodiment 7
It is same as Example 1, it is changed to 15: 15: 10: 60 according to amount of substance ratio by Ni: Fe: Mo: Mn.Gained catalysis electrode
Catalytic performance：Catalytic water electrolytic hydrogen production, is 100mA/cm in current density2And 200mA/cm2Overpotential be respectively 259mV and
420mV；Water electrolysis production oxygen is catalyzed, in the case where standard hydrogen potential is 2V, current density is 334mA/cm2。
Embodiment 8
It is same as Example 1, it is changed to 25: 10: 10: 55 according to amount of substance ratio by Ni: Fe: Mo: Mn.Gained catalysis electrode
Catalytic performance：Catalytic water electrolytic hydrogen production, is 100mA/cm in current density2And 200mA/cm2Overpotential be respectively 238mV and
364mV；Water electrolysis production oxygen is catalyzed, in the case where standard hydrogen potential is 2V, current density is 356mA/cm2。
Embodiment 9
It is same as Example 1, de- alloy approach is only changed to the de- alloy approach of chemistry.The catalytic of gained catalysis electrode
Energy：Catalytic water electrolytic hydrogen production, is 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 205mV and 317mV；Urge
Change water electrolysis production oxygen, in the case where standard hydrogen potential is 2V, current density is 373mA/cm2。
Embodiment 10
It is same as Example 1, de- alloy approach is changed to the de- alloy approach of chemistry, it is 10800 seconds to take off alloying time.Institute
Obtain the catalytic performance of catalysis electrode：Catalytic water electrolytic hydrogen production, is 100mA/cm in current density2And 200mA/cm2Overpotential is distinguished
For 224mV and 338mV；Water electrolysis production oxygen is catalyzed, in the case where standard hydrogen potential is 2V, current density is 349mA/cm2。
Embodiment 11
It is same as Example 1, alloy preparation method is simply changed to rolling.The catalytic performance of gained catalysis electrode：Catalysis
Water electrolysis produces hydrogen, is 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 178mV and 295mV；It is catalyzed water electrolysis
Oxygen is produced, in the case where standard hydrogen potential is 2V, current density is 476mA/cm2。
Efficient self-supporting catalysis electricity is prepared when the ferronickel molybdenum manganese alloy using certain proportion scope carries out de- Alloying Treatment
The pole current density more stable and applicable compared to conventional powder cladding process is bigger, and current density may be up to 1000mA/cm in production hydrogen2
More than, it is 100mA/cm in current density2And 200mA/cm2Overpotential is respectively 133mV and 211mV (Fig. 3)；Produce in oxygen in electricity
Current density is 10mA/cm2And 100mA/cm2Overpotential is respectively 265mV and 367mV, and when standard hydrogen potential is 2V, electric current is close
Degree is up to 632mA/cm2, (Fig. 5)；With double catalysis, electrolysis aquatic products hydrogen and production can be carried out simultaneously in alkaline electrolytic bath
Oxygen, when voltage is 1.54V, current density is up to 10mA/cm2(Fig. 7), shows advantageous catalytic performance.
Embodiment described above is merely to illustrate the technological thought and feature of the present invention, in the art its object is to make
Technical staff it will be appreciated that present disclosure and implementing according to this, it is impossible to the patent model of the present invention is only limited with the present embodiment
Enclose, i.e., equal change or modification that all disclosed spirit is made, still fall in the scope of the claims of the present invention.
Claims (10)
1. a kind of preparation method of efficient self-supporting catalysis electrode, it is characterised in that comprise the following steps：
(1) prepared by alloy：Prepare in ferronickel molybdenum manganese alloy, the alloy, the amount percentage of the material of nickel is 5%-25%, iron
The amount percentage of material is in 5%-25%, and the amount percentage of the material of molybdenum is in 5%-25%, and surplus is manganese；The alloy is processed
Into alloy strip of the thickness at 20-500 μm or alloy sheets；
(2) alloy for preparing step (1) prepares efficient self-supporting catalysis electrode, described height using de- alloyage process
Self-supporting catalysis electrode pore-size distribution is imitated in 2 nanometers to 500 nanometer ranges, specific surface area is 10~80m2/g。
2. the preparation method of efficient self-supporting catalysis electrode according to claim 1, it is characterised in that the step (2)
In de- alloyage process be that the de- alloyage process of chemistry or electrochemistry take off alloyage process.
3. the preparation method of efficient self-supporting catalysis electrode according to claim 2, it is characterised in that the chemistry is de- to be closed
Aurification method is step (1) to be prepared into alloy strip or alloy sheets are dipped in acid solution and carry out de- alloying process, complete
Into rear vacuum drying.
4. the preparation method of efficient self-supporting catalysis electrode according to claim 3, it is characterised in that the acid solution
For concentration 0.005mol/L~2mol/L acid solutions.
5. the preparation method of efficient self-supporting catalysis electrode according to claim 2, it is characterised in that the electrochemistry takes off
Alloyage process is to be worked electrode with alloy strip or alloy sheets made from step (1), using three-electrode system in faintly acid
Alloying is taken off in salting liquid, it is -0.45V~-0.8V to take off alloying voltage, it is 500 seconds~40000 seconds to take off alloying time.
6. the preparation method of efficient self-supporting catalysis electrode according to claim 5, it is characterised in that the faintly acid salt
For the strong acid weak base salting liquid of concentration 0.5mol/L~3mol/L ammoniums.
7. the preparation method of efficient self-supporting catalysis electrode according to claim 1, it is characterised in that the step (2)
Obtained efficient self-supporting catalysis electrode, is Ni: Fe: Mo=5: 2: 1 or 2: 1.2: 1 or 3: 1: 1 or 1: 1 according to the amount ratio of material
: 1 or 8: 2: 1.
8. the preparation method of efficient self-supporting catalysis electrode according to claim 1, it is characterised in that the step (1)
Alloy using rolling or get rid of band method prepare.
9. efficient self-supporting catalysis electrode made from the preparation method as described in claim any one of 1-8.
10. efficient self-supporting catalysis electrode is in terms of electrolysis water made from the preparation method as described in claim any one of 1-8
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| CN114763587A (en) * | 2022-04-07 | 2022-07-19 | 天津工业大学 | Self-supporting element co-doped nickel-based high-entropy alloy electrolytic water material and preparation method thereof |
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