CN113594481A - Carbon dioxide reduction electrocatalyst and preparation method and application thereof - Google Patents
Carbon dioxide reduction electrocatalyst and preparation method and application thereof Download PDFInfo
- Publication number
- CN113594481A CN113594481A CN202110830887.7A CN202110830887A CN113594481A CN 113594481 A CN113594481 A CN 113594481A CN 202110830887 A CN202110830887 A CN 202110830887A CN 113594481 A CN113594481 A CN 113594481A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- carbon
- electrocatalyst
- source
- dioxide reduction
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
- H01M4/9083—Catalytic material supported on carriers, e.g. powder carriers on carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8882—Heat treatment, e.g. drying, baking
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a carbon dioxide reduction electrocatalyst and a preparation method and application thereof, wherein the carbon dioxide reduction electrocatalyst comprises the following components: carbon substrate adhered to each other in hollow state, and Bi/Bi supported on the substrate2O3Spherical nanoparticles.
Description
Technical Field
The invention relates to a carbon dioxide reduction electrocatalyst and a preparation method and application thereof, belonging to the field of electrocatalysts.
Background
Carbon dioxide (CO) in the atmosphere and ocean as industry develops and population density increases2) The concentration is obviously increased, and the electrocatalytic reduction of the carbon dioxide has the advantages of mild reaction conditions, adjustable products, high conversion rate and the like, so that the electrocatalytic reduction is considered to be one of ideal means for realizing the carbon cycle balance in an auxiliary manner. CO 22The compound is a stable linear molecule, the bond energy is large, the bond is not easy to break, and the bond is difficult to activate; since the reaction is usually carried out in aqueous solution, inThe reduction process is often accompanied by competing reactions of hydrogen evolution. Kinetically slow and complex multi-step reaction process for electrocatalytic CO2The reduction efficiency, selectivity and stability need to be further improved, and the preparation of the electrocatalyst with low cost and high performance has important significance.
Formic acid is a chemical product with wide application, can be directly used as a chemical fuel of a formic acid fuel cell, is a good hydrogen storage material, and is an ideal target product.
The bismuth-based material has the advantages of low cost and low toxicity, and can reduce CO2Reaction intermediates in the methanoic acid production path have proper adsorption energy and are mostly used as a matrix for catalytic reduction of CO2The formic acid is expected to become an excellent formic acid electrocatalyst through modification.
Disclosure of Invention
In view of the above problems, the present invention is directed to a carbon-supported Bi/Bi2O3A granular electrocatalyst, a preparation method and application thereof.
In one aspect, the invention provides a carbon dioxide reduction electrocatalyst (or called carbon-supported Bi/Bi)2O3A particulate electrocatalyst), the carbon dioxide reduction electrode comprising: carbon substrate adhered to each other in hollow state, and Bi/Bi supported on the substrate2O3Spherical nanoparticles.
In the present invention, the carbon substrate and Bi/Bi2O3The particles are in close contact with each other, electron transfer exists, the electron transmission efficiency can be improved, the Bi electronic structure is regulated and controlled, and the CO pair of the material is optimized2Thereby improving the reduction of CO by the electrocatalyst2Property of producing formic acid (radicals).
Preferably, the Bi/Bi2O3The particle size of the spherical nano-particles is 20 nm-50 nm.
In another aspect, the present invention provides a method for preparing a carbon dioxide reduction electrocatalyst, comprising:
(1) adding an ethanol solution of a carbon source into the ethanol suspension of the Bi source and uniformly mixing to obtain a mixed suspension;
(2) carrying out hydrothermal reaction on the obtained mixed suspension at the temperature of 180-200 ℃ for 6-8 hours to obtain a hydrothermal product;
(3) and washing and drying the obtained hydrothermal product, and then calcining to obtain the carbon dioxide reduction electrocatalyst.
Preferably, the carbon source must be tannic acid TA; the source of Bi must be Bi (NO)3)3·5H2O。
In the invention, by being Bi/Bi2O3The particles are modified by a carbon carrier, and the carbon carrier is prepared by calcining tannic acid after hydrothermal reaction. The existence of the carbon substrate in the calcining process can effectively control Bi/Bi2O3Particle size, resulting in uniform active sites.
Preferably, the mass ratio of the carbon source to the Bi source is (1.6-1.8): 1.
preferably, the mode of uniform mixing is ultrasonic mixing, the power of the ultrasonic mixing is 500-600W, and the time of the ultrasonic mixing is 20-60 minutes.
Preferably, the calcining comprises: calcining for 1-2 hours at 600-700 ℃ in a nitrogen atmosphere; then N is added2Cooling to below 100 ℃ in the atmosphere, and then cooling to room temperature in an open manner; and finally calcining the mixture for 0.5 to 2 hours at the temperature of 200 to 300 ℃ in an air atmosphere.
In yet another aspect, the invention provides a carbon dioxide reduction electrocatalyst for electrocatalytic reduction of CO2The use of (1).
Has the advantages that:
the invention provides a carbon-loaded Bi/Bi2O3Granular electrocatalyst and preparation method thereof and application thereof in electrocatalytic reduction of CO2Producing formic acid (root), effectively controlling Bi/Bi by using carbon substrate2O3The particle size and the active sites are uniform, the electron transmission efficiency can be improved, and the Bi electronic structure can be regulated, so that the reduction of CO by the electrocatalyst is improved2The property of producing formic acid (roots);
the preparation method is easy to control, the cost of the used raw materials is low, and the target product is easy to obtain. The obtained carbon dioxide is reduced to electricityThe catalyst has better electro-catalytic reduction of CO2Methanogenic (root) activity.
Drawings
FIG. 1 shows Bi supported on a carbon substrate prepared in example 1-22O3A TEM image of the material;
FIG. 2 shows the carbon substrate supporting Bi/Bi prepared in example 1-22O3XRD pattern of the material;
FIG. 3a is a carbon substrate supporting Bi/Bi prepared in example 12O3I-t plot of material;
FIG. 3b is the carbon substrate supported Bi/Bi prepared in example 22O3I-t plot of material;
FIG. 4 shows the carbon substrate supporting Bi/Bi prepared in example 1-22O3Product Faraday efficiency bar graph of material, wherein in each set of bar graphs, left column: Bi/Bi2O3@C(700N2) Right column: Bi/Bi2O3@C(600N2)。
Detailed Description
The present invention is further illustrated by the following examples, which are to be understood as merely illustrative and not restrictive.
In the present invention, Bi/Bi is supported on carbon2O3The particulate electrocatalyst comprises: carbon substrate and Bi/Bi supported on the substrate2O3And (3) nanoparticles. The following exemplarily illustrates a preparation method of the carbon dioxide reduction electrocatalyst.
Weighing a certain amount of tannic acid TA, dissolving in ethanol, and stirring the solution until the solution is clear to obtain an ethanol solution of tannic acid TA. Wherein the carbon source must be tannic acid.
Taking a certain amount of Bi (NO)3)3·5H2And dispersing O in the ethanol solution to obtain a suspension of the Bi source. Wherein the Bi source must be Bi (NO)3)3·5H2O。
Adding ethanol solution of tannic acid TA into Bi (NO)3)3·5H2And (4) ultrasonically mixing the O in the ethanol suspension to obtain a mixed suspension. Wherein, ultrasoundThe power of mixing was 600W and the time of ultrasonic mixing was 30 minutes.
And transferring the mixed suspension into a reaction kettle, and carrying out hydrothermal reaction to obtain a hydrothermal product. Wherein, the temperature of the hydrothermal reaction includes but is not limited to 180-200 ℃, and the time includes but is not limited to 6-8 hours. The temperature of the hydrothermal reaction is preferably 200 ℃. The hydrothermal reaction time is preferably 6 hours.
After cooling at room temperature, the obtained hydrothermal product is subjected to centrifugal separation, washing and drying to obtain hydrothermal product powder.
And transferring a certain amount of hydrothermal product powder into a crucible, and calcining to obtain the carbon dioxide reduction electrocatalyst. Wherein the calcining comprises: firstly, N is2Calcining for 1-2 hours at 600-700 ℃ in the atmosphere, and carbonizing. Then N is added2Cooling to below 100 deg.c in atmosphere, and cooling to room temperature. Then calcining the mixture for 0.5 to 2 hours (preferably 1 hour) in an air atmosphere at 200 to 300 ℃ (preferably 200 ℃), and oxidizing the elementary substance Bi. If the temperature of air calcination is low or the time is short, the oxidation effect on the elementary substance Bi is poor. If the temperature of the air calcination is too high or the time is too long, the carbon substrate in the material is reduced or removed.
In the present invention, carbon supports Bi/Bi2O3Preparation method of particle electrocatalyst and application of particle electrocatalyst in electrocatalytic reduction of CO2Producing formic acid (root), effectively controlling Bi/Bi by using carbon substrate2O3The particle size and the active sites are uniform, the electron transmission efficiency can be improved, and the Bi electronic structure can be regulated, so that the reduction of CO by the electrocatalyst is improved2Property of producing formic acid (radicals).
The present invention will be described in detail by way of examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art may be made in light of the above teachings. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Example 1
Weighing 1.701g of tannic acid TA, dissolving in 17mL of ethanol, and stirring the solution until the solution is clear; 0.97g of Bi (NO) was taken3)3·5H2Dispersing O in 34mL of ethanol solution to obtain suspension; then pouring the ethanol solution of tannic acid TA into the solution containing Bi (NO)3)3·5H2And (4) performing ultrasonic treatment for 30 minutes in an ethanol suspension of O. The resulting suspension was transferred to a 100mL reaction vessel and reacted at 200 ℃ for 6 hours. After cooling at room temperature, the obtained product is centrifugally separated, washed and dried to obtain powder.
Transferring a certain amount of hydrothermal product into a crucible in N2Calcining at 700 ℃ for 1 hour in the atmosphere, cooling to room temperature, calcining at 200 ℃ for 1 hour in air atmosphere to obtain Bi/Bi2O3@C(700N2)。
Example 2
Weighing 1.701g of tannic acid TA, dissolving in 17mL of ethanol, and stirring the solution until the solution is clear; 0.97g of Bi (NO) was taken3)3·5H2Dispersing O in 34mL of ethanol solution to obtain suspension; then pouring the ethanol solution of tannic acid TA into the solution containing Bi (NO)3)3·5H2And (4) performing ultrasonic treatment for 30 minutes in an ethanol suspension of O. The resulting suspension was transferred to a 100mL reaction vessel and reacted at 200 ℃ for 6 hours. After cooling at room temperature, the obtained product is centrifugally separated, washed and dried to obtain powder.
Transferring a certain amount of hydrothermal product into a crucible in N2Calcining at 600 ℃ for 1 hour in the atmosphere, cooling to room temperature, calcining at 200 ℃ for 1 hour in air atmosphere to obtain Bi/Bi2O3@C(600N2)。
Example 3
The catalysts prepared in examples 1-2 were tested in an H-type electrolytic cell using a three electrode system including an Ag/AgCl reference electrode, a Pt sheet counter electrode and a working electrode. In electrochemical tests, CO is used2Saturated 0.1M KHCO3The solution serves as an electrolyte.
FIG. 1 shows Bi/Bi supported on a carbon substrate obtained in examples 1 and 22O3TEM images of the particles. It can be seen that the catalyst obtained in example 1 has a similar morphology to that of the catalyst obtained in example 2, Bi/Bi2O3The particles are uniformly distributed on a carbon substrate with low contrast and contact is made between the particles, Bi/Bi2O3The particle size of the particles is controlled to be between 20 and 50 nm. Uniform particle size facilitates uniform active site, Bi/Bi2O3The interaction between the particles and the carbon substrate is beneficial to improving the electron transmission efficiency and optimizing the CO2Thereby improving the material performance.
FIG. 2 shows Bi/Bi supported on carbon substrate obtained in examples 1 and 22O3XRD pattern of the particles. Comparing with standard PDF card, it can be known that the main phase of the material in examples 1 and 2 is Bi2O3The small amount of simple substance Bi is related to incomplete oxidation in air, and the crystallinity of the material is good.
FIG. 3 shows the carbon substrate supporting Bi/Bi obtained in examples 1 and 22O3I-t performance profiles of the particles, each containing six potentials-0.79 v.RHE to 1.29 v.RHE. The current density of the two materials is approximate under the same potential, and the current density is stable in the test process.
FIG. 4 shows the carbon substrate supporting Bi/Bi obtained in examples 1 and 22O3A bar graph of the product faradaic efficiency of the particles with a test potential distribution between 0.79 v.rhe and 1.29 v.rhe. For both materials, the products are mainly formic acid (radicals) and hydrogen and a very small amount of carbon monoxide. As the overvoltage increases, the Faradic Efficiency (FE) of formic acid (radicals) is producedHCOO-) And (4) the improvement is remarkable. For Bi/Bi2O3@C(700N2) FE at a potential of 1.19 V.RHEHCOO-Can reach the highest value of 91 percent, and can be used for electrocatalytic reduction of CO2Good formic acid (root) producing performance. For Bi/Bi2O3@C(600N2) At-1.09 V.RHE and more negative potentials, FEHCOO-Can reach more than 90 percent and FE at the potential of-1.19VHCOO-Reaches the maximum value of 94 percent, and has excellent reduced CO2Formic acid (radical) generating performance.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (8)
1. A carbon dioxide reducing electrocatalyst, characterized in that it comprises: carbon substrate adhered to each other in hollow state, and Bi/Bi supported on the substrate2O3Spherical nanoparticles.
2. The carbon dioxide reduction electrocatalyst according to claim 1, wherein the Bi/Bi is2O3The particle size of the spherical nano-particles is 20 nm-50 nm.
3. A method of preparing the carbon dioxide reduction electrocatalyst according to claim 1 or 2, comprising:
(1) adding an ethanol solution of a carbon source into the ethanol suspension of the Bi source and uniformly mixing to obtain a mixed suspension;
(2) carrying out hydrothermal reaction on the obtained mixed suspension at the temperature of 180-200 ℃ for 6-8 hours to obtain a hydrothermal product;
(3) and washing and drying the obtained hydrothermal product, and then calcining to obtain the carbon dioxide reduction electrocatalyst.
4. The method according to claim 3, wherein the carbon source is TA tannic acid; the Bi source is Bi (NO)3)3·5H2O。
5. The production method according to claim 3 or 4, wherein the mass ratio of the carbon source to the Bi source is (1.6 to 1.8): 1.
6. the preparation method according to any one of claims 3 to 5, wherein the mode of uniform mixing is ultrasonic mixing, the power of the ultrasonic mixing is 500-600W, and the time of the ultrasonic mixing is 20-60 minutes.
7. The production method according to any one of claims 3 to 6, characterized in that the calcination includes: calcining for 1-2 hours at 600-700 ℃ in a nitrogen atmosphere; then N is added2Cooling to below 100 ℃ in the atmosphere, and then cooling to room temperature in an open manner; and finally calcining for 0.5-2 hours at 200-300 ℃ in air atmosphere.
8. Use of the carbon dioxide reduction electrocatalyst according to claim 1 or 2 in electrocatalytic reduction of CO2The use of (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830887.7A CN113594481A (en) | 2021-07-22 | 2021-07-22 | Carbon dioxide reduction electrocatalyst and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830887.7A CN113594481A (en) | 2021-07-22 | 2021-07-22 | Carbon dioxide reduction electrocatalyst and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113594481A true CN113594481A (en) | 2021-11-02 |
Family
ID=78248980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110830887.7A Pending CN113594481A (en) | 2021-07-22 | 2021-07-22 | Carbon dioxide reduction electrocatalyst and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113594481A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518222A (en) * | 2019-01-28 | 2019-03-26 | 苏州大学 | For electro-catalysis CO2It is restored to the bismuth-based catalysts and its preparation method and application of formic acid |
| CN109888206A (en) * | 2019-01-23 | 2019-06-14 | 江苏理工学院 | A kind of lithium ion battery negative material Bi/Bi2O3/ C and its preparation and application |
| CN111203219A (en) * | 2020-03-05 | 2020-05-29 | 南昌大学 | Copper-based catalyst for preparing formic acid from carbon dioxide, preparation method and application |
-
2021
- 2021-07-22 CN CN202110830887.7A patent/CN113594481A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888206A (en) * | 2019-01-23 | 2019-06-14 | 江苏理工学院 | A kind of lithium ion battery negative material Bi/Bi2O3/ C and its preparation and application |
| CN109518222A (en) * | 2019-01-28 | 2019-03-26 | 苏州大学 | For electro-catalysis CO2It is restored to the bismuth-based catalysts and its preparation method and application of formic acid |
| CN111203219A (en) * | 2020-03-05 | 2020-05-29 | 南昌大学 | Copper-based catalyst for preparing formic acid from carbon dioxide, preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| JUNJIE SUN等: "Bi/Bi2O3 nanoparticles supported on N-doped reduced graphene oxide for highly efficient CO2 electroreduction to formate", 《CHINESE CHEMICAL LETTERS》, vol. 31, 22 April 2020 (2020-04-22), pages 1415, XP086205177, DOI: 10.1016/j.cclet.2020.04.031 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106925314B (en) | A kind of method of nickel assisted cryogenic synthesis molybdenum carbide elctro-catalyst | |
| CN106694006A (en) | Preparation of highly dispersed molybdenum carbide/carbon composite electro-catalyst by adopting oxidation, reduction and fixation method | |
| CN108232213A (en) | A kind of nitrogen-doped graphene-carbon nanotube-cobaltosic oxide hybrid material and preparation method thereof | |
| CN110614105A (en) | Mo for hydrogen evolution2C/NiCoSex heterojunction electrocatalytic material and preparation method thereof | |
| CN108855173A (en) | A kind of photoelectrocatalysis decompose aquatic products hydrogen method and its used in plasma catalyst and preparation method | |
| CN114477320B (en) | Preparation method of PEM water electrolysis oxygen desorption catalyst iridium oxide | |
| CN1262030C (en) | Electric Pt-C catalyst containing cocatalytic element and its prepn | |
| CN114471658A (en) | Temperature-controlled bifunctional atomic-level dispersed metal g-C3N4Method for preparing photocatalyst | |
| CN101562250B (en) | Method for preparing cathode catalyst of proton exchange membrane fuel cell | |
| CN113403631A (en) | Particulate CuCo-MOF/MoS2Catalyst, preparation method and application thereof | |
| CN107221683A (en) | The preparation method of PtVFe/WC/C nanometers of oxygen reduction catalysts | |
| CN108607546B (en) | Electrocatalyst with platinum loaded on titanium dioxide-carbon composite carrier and preparation method thereof | |
| WO2023139862A1 (en) | Multi-walled carbon nanotube catalyst for fuel cell cathode, and method for preparing same | |
| CN114899435B (en) | Method for preparing metal monoatomic anchoring binary heterostructure catalyst | |
| CN114855180B (en) | Preparation method of polyacid-derived low-platinum-load hydrogen evolution electrocatalyst | |
| CN113594481A (en) | Carbon dioxide reduction electrocatalyst and preparation method and application thereof | |
| CN116180107A (en) | Amorphous nickel iron tungstate catalytic material and preparation method and application thereof | |
| CN114180549B (en) | Preparation method and application of carbon material containing 3d metal monoatomic atoms and nitrogen and oxygen codoped | |
| CN115172784A (en) | Preparation method of fuel cell cathode platinum-carbon catalyst | |
| CN114345322A (en) | Carbon-supported manganese oxide catalyst and preparation method thereof | |
| CN113731466B (en) | MoC/nitrogen doped carbon/g-C 3 N 4 Composite photocatalyst, preparation and application thereof | |
| CN105363448B (en) | A kind of charcoal/silver/manganese dioxide three-phase composite catalyst and preparation method thereof | |
| CN114717595B (en) | Highly ordered PdAG alloy catalytic material, preparation method thereof and application thereof in electrocatalytic reduction of carbon dioxide | |
| CN110055555A (en) | Oxygen evolution reaction catalysts and its preparation method and application | |
| CN114182280B (en) | MEC hydrogen evolution cathode electrode based on Ni-SAPO-34 composite material |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211102 |
|
| WD01 | Invention patent application deemed withdrawn after publication |