CN108311151B - oxygen evolution electrocatalyst based on nickel-iron alloy/nickel-cobalt oxide binary composite material and preparation method thereof - Google Patents
oxygen evolution electrocatalyst based on nickel-iron alloy/nickel-cobalt oxide binary composite material and preparation method thereof Download PDFInfo
- Publication number
- CN108311151B CN108311151B CN201810071493.6A CN201810071493A CN108311151B CN 108311151 B CN108311151 B CN 108311151B CN 201810071493 A CN201810071493 A CN 201810071493A CN 108311151 B CN108311151 B CN 108311151B
- Authority
- CN
- China
- Prior art keywords
- nickel
- hollow structure
- oxygen evolution
- nico
- hydrotalcite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000001301 oxygen Substances 0.000 title claims abstract description 42
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 42
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 title claims abstract description 37
- 239000010411 electrocatalyst Substances 0.000 title claims abstract description 28
- YTBWYQYUOZHUKJ-UHFFFAOYSA-N oxocobalt;oxonickel Chemical compound [Co]=O.[Ni]=O YTBWYQYUOZHUKJ-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000011218 binary composite Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 22
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 22
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 22
- 229910003266 NiCo Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- -1 potassium ferricyanide Chemical compound 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- YSWBFLWKAIRHEI-UHFFFAOYSA-N 4,5-dimethyl-1h-imidazole Chemical compound CC=1N=CNC=1C YSWBFLWKAIRHEI-UHFFFAOYSA-N 0.000 claims description 5
- 229920000557 Nafion® Polymers 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 4
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 4
- 239000006258 conductive agent Substances 0.000 claims description 4
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 229910000863 Ferronickel Inorganic materials 0.000 claims description 3
- 239000006230 acetylene black Substances 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 229910044991 metal oxide Inorganic materials 0.000 abstract 2
- 150000004706 metal oxides Chemical class 0.000 abstract 2
- 238000005342 ion exchange Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- QGUAJWGNOXCYJF-UHFFFAOYSA-N cobalt dinitrate hexahydrate Chemical compound O.O.O.O.O.O.[Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O QGUAJWGNOXCYJF-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229920001795 coordination polymer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000012621 metal-organic framework Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- AOPCKOPZYFFEDA-UHFFFAOYSA-N nickel(2+);dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O AOPCKOPZYFFEDA-UHFFFAOYSA-N 0.000 description 1
- 239000013110 organic ligand Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/755—Nickel
-
- B01J35/33—
-
- B01J35/40—
-
- B01J35/50—
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
Abstract
the invention discloses an oxygen evolution electrocatalyst based on a nickel-iron alloy/nickel-cobalt oxide binary composite material and a preparation method thereof. The preparation method comprises the steps of preparing NiCo hydrotalcite with a hollow structure by a template method, carrying out ion exchange with potassium ferricyanide to obtain NiCo-NiFe (CN)6 hydrotalcite, and carrying out reduction roasting to obtain the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material. The oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material has a unique hollow structure and a plurality of electrocatalytic active sites, rich carbon can improve the electronic structure of the material and enhance the conductivity of the metal oxide, and the oxygen evolution electrocatalyst has excellent electrocatalytic performance and develops a new method for improving the electrocatalytic activity of the metal oxide.
Description
Technical Field
The invention belongs to the technical field of electrocatalytic materials, and particularly relates to an oxygen evolution electrocatalyst based on a nickel-iron alloy/nickel-cobalt oxide binary composite material and a preparation method thereof.
Background
With the development of society, the use of fossil fuels brings a series of problems to human society, hydrogen energy is considered to be one of new energy sources which can replace fossil fuels most in the future, the preparation of hydrogen by electrolyzing water is the simplest and most effective method at present, the factor restricting the development of the electrolyzed water is that certain electric energy needs to be consumed, how to reduce the energy consumption of the electrolyzed water reaction is a research hotspot at present, the oxygen evolution reaction is a half reaction of the electrolyzed water reaction, the reaction process needs to carry out four-electron transfer, and the method has a higher energy barrier than the hydrogen evolution half reaction, so that how to reduce the overpotential of the oxygen evolution half reaction is one of the research hotspots at present.
Electrocatalysts of excellent performance generally have several characteristics: the material has abundant electrocatalytic active sites, and can effectively reduce the energy barrier of catalytic reaction; secondly, the material has larger specific surface area, which is beneficial to the full contact of electrolyte and an electrode and can expose more active sites; and thirdly, the material has better conductivity and can accelerate the electron transmission rate.
The metal-organic framework material is a coordination polymer which develops rapidly in recent years, takes metal ions as connecting points, is supported by organic ligands to form space three-dimensional extension, has a three-dimensional pore structure, and has wide application in the fields of catalysis, energy storage, separation and the like. The nano cavity and the open channel can provide a channel for small molecules to enter and escape, so that the nano cavity and the open channel can be used as a sacrificial template or a precursor to prepare a functional nano material. The hydrotalcite is a layered double metal hydroxide, the layered plate is positively charged, anions between the layers are negatively charged, the transition metal elements of the layered plate are tunable, and the anions between the layers can be exchanged, so that the layered double metal hydroxide becomes an excellent electro-catalytic oxygen evolution catalyst. The layered composite material based on nickel, cobalt and iron can provide more active sites for oxygen evolution reaction. But the hydrotalcite has poor conductivity, so that the conductivity of the material is improved, and the electrocatalytic performance can be improved to a greater extent.
Disclosure of Invention
The invention aims to provide an oxygen evolution electrocatalyst which has iron, cobalt, nickel and three electrocatalytic active sites and is based on a nickel-iron alloy/nickel-cobalt oxide binary composite material, and a preparation method thereof.
the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material is a hollow structure formed by the nickel-iron alloy and the nickel-cobalt oxide, the particle size of the hollow structure is 20-30nm, and the size of the formed hollow structure is 300-500 nm.
the method for preparing the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material comprises the following steps:
1) Preparing NiCo hydrotalcite with a hollow structure by a template method;
2) Preparing NiCo-NiFe (CN)6 hydrotalcite with a hollow structure by using potassium ferricyanide and NiCo hydrotalcite with a hollow structure;
3) And (3) reducing and roasting NiCo-NiFe (CN)6 hydrotalcite with a hollow structure to obtain the hollow structure oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material.
ZIF-67 was used as template in step 1).
In the step 2), the mass ratio of the potassium ferricyanide to the NiCo hydrotalcite with a hollow structure is 1-10.
The preparation method of the ZIF-67 in the step 1) comprises the following steps: respectively dissolving 0.1-5mmol of cobalt nitrate and 1-20mmol of dimethyl imidazole in 10-200mL of methanol, quickly pouring the solution of the dimethyl imidazole into the solution of the cobalt nitrate, aging at room temperature for 12-48h, and centrifugally cleaning to obtain ZIF-67.
In the step 1), 20-80mg of ZIF-67 and 5-800mg of nickel nitrate are dissolved in 10-500mL of ethanol, 1-20mL of water is added after 0.1-1h of reaction, and the reaction is performed at 20-100 ℃ for 0.5-5h of reflux reaction to obtain the NiCo hydrotalcite with a hollow structure.
In the step 2), 10-200mg of NiCo hydrotalcite with a hollow structure is dispersed in 20-200mL of boiling water, 50-500mg of potassium ferricyanide is dissolved in 5-50mL of deionized water and then is added into the solution drop by drop, the reaction is carried out for 4-48h at room temperature, and NiCo-NiFe (CN)6 hydrotalcite with a hollow structure is obtained by respectively washing with water and ethanol and drying.
in the step 3), NiCo-NiFe (CN)6 hydrotalcite with a hollow structure is roasted for 1-6H in a mixed gas of H2 and Ar at 200-600 ℃ to obtain the oxygen evolution electrocatalyst with the hollow structure based on the ferronickel/nickel-cobalt oxide binary composite material.
An electrocatalytic oxygen evolution method:
1) Uniformly mixing the prepared oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material with a conductive agent alkyne black in a mass ratio of 0.2-20, adding ethanol, performing ultrasonic treatment, adding a Nafion solution, uniformly mixing, coating on a conductive carbon paper current collector, and drying at room temperature to obtain an oxygen evolution reaction electrode;
2) And (3) placing the oxygen evolution reaction electrode in 0.5-5mol/L KOH solution, and carrying out electrocatalytic oxygen evolution by taking a saturated calomel electrode as a reference electrode and a platinum sheet electrode as an auxiliary electrode.
the advantages of the invention are as follows:
1) The oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material prepared by the invention has three electrocatalytic active sites of iron, cobalt and nickel, and the three active sites of nickel, cobalt and iron have synergistic effect, so that the energy barrier of electrocatalytic reaction is reduced, and the electrocatalytic overpotential is obviously reduced.
2) The oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material prepared by the invention has a hollow pore structure, so that the oxygen evolution electrocatalyst has a larger specific surface area, is beneficial to the exposure of an electrocatalytic active site, and simultaneously has a rich pore structure, and is also beneficial to the full contact of electrolyte and the active site, so that the reaction rate is accelerated.
3) The overpotential of the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material prepared by the invention can be as low as 286mv under the current density of 10mA/cm, and the gradient of Tafel is 49.3 mv/dec.
drawings
FIG. 1 is a scan of the oxygen evolution reaction lines for NiFe/NiCoO2, NiCo-NiFe (CN)6LDH, NiCo-LDH-HD, NiCo alloy and Ir/C obtained in the examples of the present invention.
Fig. 2 is an XRD pattern of the oxygen evolution electrocatalyst, NiFe alloy, NiCoO2 based on the ferronickel/nickel cobalt oxide binary composite material obtained in the example of the present invention.
Detailed Description
example of preparation of an oxygen evolution electrocatalyst based on a nickel-iron alloy/nickel-cobalt oxide binary composite:
1. Respectively dissolving 2mmol of cobalt nitrate hexahydrate and 2mmol of dimethyl imidazole in 100ml of methanol, quickly pouring the solution of the latter into the solution of the former, aging for 24 hours at room temperature, and centrifugally washing to obtain ZIF-67. Dissolving 60mg of ZIF-67 and 600mg of nickel nitrate hexahydrate in 100ml of ethanol, reacting for half an hour, adding 10ml of water into the mixture, and carrying out reflux reaction at the temperature of 30 ℃ for 1 hour to obtain NiCoLDH with a hollow structure;
2. 50mg of NiCoLDH with a hollow structure is dispersed in 100ml of boiling water, 400mg of potassium ferricyanide is dissolved in 30ml of deionized water and then is added into the solution drop by drop, the reaction is carried out for 36 hours at room temperature, and NiCo-NiFe (CN)6LDH with a hollow structure is obtained by respectively washing with water and ethanol and drying. And roasting the obtained product in a mixed gas with the volume ratio of H2 to Ar being 1:9 at 500 ℃ for 5 hours to obtain the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material.
The prepared oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material is a hollow structure formed by the nickel-iron alloy and the nickel-cobalt oxide, the particle size of the hollow structure is 20-30nm, and the size of the formed hollow structure is 300-500 nm.
Example of preparation of NiCo alloy:
NiCoLDH with a hollow structure is prepared by the same method as the step 1 in the above example, and is directly roasted for 5H in a mixed gas of H2 and Ar with the volume ratio of 1:9 at 500 ℃ to obtain NiCo alloy.
the application example is as follows:
1. Mixing 9mg of the prepared oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material with 0.1mg of acetylene black as a conductive agent uniformly, adding 1mL of ethanol, performing ultrasonic treatment, adding 50 mu L of 5 wt% Nafion solution, coating the mixture on conductive carbon paper of 1 x 1cm2, and drying the conductive carbon paper at room temperature for 24 hours to obtain an oxygen evolution reaction electrode;
2. the prepared oxygen evolution reaction electrode is placed in 3mol/L KOH solution, a three-electrode system is adopted for testing, a reference electrode is a saturated calomel electrode, an auxiliary electrode is a platinum sheet electrode, and the line scanning curve is shown in the attached figure 1.
comparative example:
1. Mixing 9mg of the prepared NiCo alloy and 0.1mg of acetylene black as a conductive agent uniformly, adding 1mL of ethanol, performing ultrasonic treatment, adding 50 mu L of 5 wt% Nafion solution, coating the solution on carbon paper with the thickness of 1 multiplied by 1cm2, and drying the carbon paper for 24 hours at room temperature to prepare an electrocatalytic electrode;
2. the prepared electrode is placed in 3mol/L KOH solution, a three-electrode system is adopted for testing, a reference electrode is a saturated calomel electrode, an auxiliary electrode is a platinum sheet electrode, and the line scanning curve of the electrode is shown in the attached figure 1.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. The preparation method of the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material is characterized in that the oxygen evolution electrocatalyst is a hollow structure formed by the nickel-iron alloy and the nickel-cobalt oxide, the particle size of the hollow structure is 20-30nm, and the size of the formed hollow structure is 300-500 nm; the preparation method comprises the following steps:
1) Preparing NiCo hydrotalcite with a hollow structure by a template method;
2) preparing NiCo-NiFe (CN)6 hydrotalcite with a hollow structure by using potassium ferricyanide and NiCo hydrotalcite with a hollow structure;
3) reducing and roasting NiCo-NiFe (CN)6 hydrotalcite with a hollow structure to obtain an oxygen evolution electrocatalyst with a hollow structure based on a nickel-iron alloy/nickel-cobalt oxide binary composite material;
ZIF-67 was used as template in step 1).
2. the method according to claim 1, wherein in the step 2), the mass ratio of the potassium ferricyanide to the NiCo hydrotalcite having a hollow structure is 1 to 10.
3. The method of claim 1, wherein the ZIF-67 of step 1) is prepared by: respectively dissolving 0.1-5mmol of cobalt nitrate and 1-20mmol of dimethyl imidazole in 10-200mL of ethanol, quickly pouring the solution of the dimethyl imidazole into the solution of the cobalt nitrate, aging at room temperature for 12-48h, and centrifugally cleaning to obtain ZIF-67.
4. The preparation method of claim 1, wherein in the step 1), 20-80mg of ZIF-67 and 5-800mg of nickel nitrate are dissolved in 10-500mL of ethanol, and after 0.1-1h of reaction, 1-20mL of water is added, and the reaction is performed at 20-100 ℃ under reflux for 0.5-5h to obtain the NiCo hydrotalcite with a hollow structure.
5. The preparation method of claim 1, wherein in the step 2), 10-200mg of NiCo hydrotalcite with a hollow structure is dispersed in 20-200mL of boiling water, 50-500mg of potassium ferricyanide is dissolved in 5-50mL of deionized water and then is added to the solution dropwise, the reaction is carried out for 4-48h at room temperature, and NiCo-NiFe (CN)6 hydrotalcite with a hollow structure is obtained after washing with water and ethanol respectively and drying.
6. The preparation method of claim 1, wherein in the step 3), NiCo-NiFe (CN)6 hydrotalcite with a hollow structure is calcined in a mixed gas of H2 and Ar at the temperature of 200-600 ℃ for 1-6H to obtain the oxygen evolution electrocatalyst based on the ferronickel/nickel cobalt oxide binary composite material with a hollow structure.
7. an electrocatalytic oxygen evolution method, characterized by comprising the steps of:
1) Uniformly mixing the oxygen evolution electrocatalyst based on the nickel-iron alloy/nickel-cobalt oxide binary composite material prepared in the claim 1 and acetylene black serving as a conductive agent in a mass ratio of 0.2-20, adding ethanol, performing ultrasonic treatment, adding a Nafion solution, uniformly mixing, coating on a conductive carbon paper current collector, and drying at room temperature to obtain an oxygen evolution reaction electrode;
2) and (3) placing the oxygen evolution reaction electrode in 0.5-5mol/L KOH solution, and carrying out electrocatalytic oxygen evolution by taking a saturated calomel electrode as a reference electrode and a platinum sheet electrode as an auxiliary electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810071493.6A CN108311151B (en) | 2018-01-25 | 2018-01-25 | oxygen evolution electrocatalyst based on nickel-iron alloy/nickel-cobalt oxide binary composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810071493.6A CN108311151B (en) | 2018-01-25 | 2018-01-25 | oxygen evolution electrocatalyst based on nickel-iron alloy/nickel-cobalt oxide binary composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108311151A CN108311151A (en) | 2018-07-24 |
| CN108311151B true CN108311151B (en) | 2019-12-06 |
Family
ID=62887551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810071493.6A Active CN108311151B (en) | 2018-01-25 | 2018-01-25 | oxygen evolution electrocatalyst based on nickel-iron alloy/nickel-cobalt oxide binary composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108311151B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529849B (en) * | 2018-12-18 | 2021-10-08 | 山东科技大学 | Method for synthesizing nickel-iron hydrotalcite nano array composite structure by in-situ self-sacrifice template and application |
| CN112619649B (en) * | 2019-09-24 | 2022-08-16 | 中国石油大学(华东) | Nickel-cobalt-iron ternary oxide electrolytic water composite material and preparation method and application thereof |
| CN111135866A (en) * | 2019-11-25 | 2020-05-12 | 浙江大学 | Preparation method of multi-level structure electrocatalyst based on combination of MOFs and LDH |
| CN111943155B (en) * | 2020-07-08 | 2022-09-02 | 江西师范大学 | Preparation method of composite cobalt phosphide nano polyhedron with yolk shell structure |
| CN112366328A (en) * | 2020-11-09 | 2021-02-12 | 重庆大学 | Preparation method of partially ordered two-dimensional superlattice platinum alloy catalyst layer |
| CN112264021A (en) * | 2020-11-24 | 2021-01-26 | 哈尔滨工程大学 | Preparation method of trimetal double hydroxide hollow nano cage oxygen evolution electrocatalyst |
| CN114570369B (en) * | 2022-01-07 | 2023-04-21 | 华南理工大学 | MOFs derived nano-sheet self-assembled hierarchical double-layer hollow nano-material and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814604B (en) * | 2010-01-08 | 2012-07-25 | 北京化工大学 | Noble-metal/composite metal oxide/ carbon nanometer tubular electro-catalyst and preparation method and application |
| US9362568B2 (en) * | 2011-02-18 | 2016-06-07 | The Board Of Trustees Of The Leland Stanford Junior University | Battery with hybrid electrocatalysts |
| CN107620087A (en) * | 2016-07-15 | 2018-01-23 | 中国科学院大连化学物理研究所 | A kind of FeOOH nickel-ferric spinel integration analysis oxygen electrode and preparation and application |
| CN106450349B (en) * | 2016-10-11 | 2019-02-22 | 北京理工大学 | A kind of preparation method of the iron nickel hydrotalcite structure nanometer sheet for oxygen evolution reaction |
| CN107362801B (en) * | 2017-07-26 | 2019-12-24 | 北京化工大学 | Hydrotalcite-based single-atomic-layer cobalt/cobalt oxide composite-structure electrocatalyst and preparation method and application thereof |
| CN107447231B (en) * | 2017-08-02 | 2019-02-22 | 中国石油大学(华东) | One kind two cobaltous telluride electro-catalysis analysis O compoiste material and its preparation method and application |
-
2018
- 2018-01-25 CN CN201810071493.6A patent/CN108311151B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108311151A (en) | 2018-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108311151B (en) | oxygen evolution electrocatalyst based on nickel-iron alloy/nickel-cobalt oxide binary composite material and preparation method thereof | |
| CN109234755B (en) | Layered double-metal hydroxide composite structure electrocatalyst and preparation method thereof | |
| CN110639534B (en) | Oxygen evolution electrocatalytic material and preparation method and application thereof | |
| CN111672514A (en) | Bifunctional electrocatalytic material and preparation method and application thereof | |
| CN108823625B (en) | Composite metal hydroxide and preparation method and application thereof | |
| CN111883785B (en) | Co-N Co-doped drum-shaped porous carbon catalyst and preparation method and application thereof | |
| CN111468120B (en) | CoFeNiO X Layered hollow nanocage electrocatalyst and preparation method and application thereof | |
| CN109908905A (en) | A method of preparing metal/metal oxide composite electrocatalyst | |
| CN112481656A (en) | Bifunctional catalyst for high-selectivity electrocatalysis of glycerin oxidation conversion to produce formic acid and high-efficiency electrolysis of water to produce hydrogen, preparation method and application thereof | |
| CN114959791A (en) | Preparation method of Mg-doped NiFe-based (oxy) hydroxide and oxygen evolution electrocatalysis application thereof | |
| CN112626550B (en) | Method for directly preparing porous nickel sulfide nanosheet electrocatalyst by one-step hydrothermal method | |
| CN106953104B (en) | It is a kind of using redox graphene as the elctro-catalyst and preparation method thereof of the Ni@Au@Pd three-layer nuclear shell structure of carrier | |
| CN117107286A (en) | Batch preparation method of NiFe-based composite oxygen evolution anode | |
| CN109994744B (en) | Nickel-cobalt binary catalyst for promoting direct oxidation of sodium borohydride | |
| CN115044939B (en) | Preparation method and application of self-supporting nickel-based double-metal hydroxide oxygen evolution electrode | |
| CN109097788B (en) | Double-carbon coupling transition metal nickel-based quantum dot electrocatalyst and preparation method thereof | |
| CN114672846B (en) | For electrocatalytic CO 2 Preparation and application of reduced bimetallic catalytic material | |
| CN113774425B (en) | Preparation method and application of Ru-modified FeCo @ NF electrocatalyst | |
| CN112928271B (en) | In-situ delamination method of hydrotalcite nanosheet array for electrocatalytic small molecule oxidation coupling hydrogen production | |
| CN104916851A (en) | Production method of catalysis layer | |
| Wu et al. | Ultralow platinum-loading PtPdRu@ PtRuIr/C catalyst with excellent CO tolerance and high performance for the methanol oxidation reaction | |
| CN115651209B (en) | Preparation method and application of MIL-53 (Al-Cu) nanosheets | |
| TW200921977A (en) | Method of manufacturing membrane fuel cell electrode using carbon nanomaterials for bearing catalyst by low-voltage electrophoretic deposition | |
| Liu et al. | Self‐supported bimetallic array superstructures for high‐performance coupling electrosynthesis of formate and adipate | |
| CN116676626A (en) | Dual-function OER/HER water electrolysis catalyst, preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |