CN111841663B - Electrochemical method for reducing size of carbon-supported metal nanoparticle electrocatalyst - Google Patents
Electrochemical method for reducing size of carbon-supported metal nanoparticle electrocatalyst Download PDFInfo
- Publication number
- CN111841663B CN111841663B CN202010650293.3A CN202010650293A CN111841663B CN 111841663 B CN111841663 B CN 111841663B CN 202010650293 A CN202010650293 A CN 202010650293A CN 111841663 B CN111841663 B CN 111841663B
- Authority
- CN
- China
- Prior art keywords
- electrode
- carbon
- metal
- size
- electrochemical
- 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
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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/348—Electrochemical processes, e.g. electrochemical deposition or anodisation
-
- 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/52—Gold
-
- 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
- B01J23/72—Copper
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- 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)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Toxicology (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Catalysts (AREA)
Abstract
The invention discloses an electrochemical method for reducing the size of a carbon-supported metal nanoparticle electrocatalyst, which is characterized in that an electrochemical two-electrode or three-electrode system is constructed, wherein a working electrode is a carbon-supported metal nanoparticle electrode, and then negative potential lower than-1V is continuously applied to the working electrode directly in an alkaline solution or a salt solution of an alkaline metal in electrolyte, so that the size of the carbon-supported metal nanoparticle electrocatalyst can be reduced. The method is simple and convenient to operate, low in energy consumption and short in time consumption, can be used for preparing small-size metal catalysts and reactivating agglomerated metal catalysts, well solves the problem that large-size metal particles are difficult to convert into small-size particles in the prior art or high-temperature treatment conditions are involved in the conversion process and are not suitable for application under electrochemical conditions, and provides a good front-end foundation for application of the small-size metal catalysts in the fields of electrolytic water, fuel cells and the like. Therefore, the invention is very suitable for popularization and application.
Description
Technical Field
The invention belongs to the technical field of nano materials, and particularly relates to an electrochemical method for reducing the size of a carbon-supported metal nanoparticle electrocatalyst.
Background
The metal (such as platinum, palladium, copper and the like) nanoparticle electrocatalyst has good catalytic activity in electrocatalytic reactions such as hydrogen evolution reaction, oxygen reduction reaction, carbon dioxide reduction reaction and the like, and has important application in the fields of hydrogen energy acquisition, fuel cells and the like. To enhance the dispersity and conductivity of the metal nanoparticle catalysts, the catalysts are typically supported on carbon materials (e.g., conductive carbon black, carbon cloth) and then coated onto the electrode surface or applied directly as self-supporting electrodes in electrocatalytic reactions. In electrocatalytic reactions, the size of the metal nanoparticles has a great influence on the catalytic activity. Typically small sized nanoparticles have a larger specific surface area, a higher surface energy, and can achieve higher catalytic activity. If the metal nanoparticle size is reduced to the atomic scale, higher catalytic activity and unique selectivity can be achieved for some electrocatalytic reactions. However, small-sized metal nanoparticles or metal atoms have high surface energy and are easily aggregated, so that the preparation difficulty is great. In addition, the metal nano particles are easy to migrate and agglomerate into large-size particles in the catalytic reaction process, so that the catalytic activity of the metal nano particles is reduced. Reactivation to small-sized nanoparticles will greatly restore catalyst activity if the size of the nanoparticles in these reduced activity catalyst systems is reduced again. Therefore, developing a simple and effective technique for reducing the size of metal nano particles has important significance in the field of catalyst preparation and reactivation.
At present, the conversion of large-size metal particles into small-size metal particles mainly depends on the anti-ostwald ripening process, namely, a proper substrate is introduced under the high-temperature condition, the metal bonds are destroyed by using thermal diffusion, and the strong interaction between the substrate and the metal is utilized to assist in stabilizing the small-size metal particles, atom clusters and even metal monoatoms. However, the method not only needs high-temperature treatment, but also has harsh conditions and serious energy waste; the method is mainly suitable for preparing powder materials, and when the method is applied to electrocatalytic reaction, a binder is required to be further introduced, so that the electrochemical active area of the catalyst is reduced, the transportation of electrolyte and gas reactants or products is hindered, inconvenience is brought to the catalysis of reactions such as hydrogen evolution, oxygen reduction and the like, and particularly the catalytic activity and stability of the electrode under high current density are reduced. In addition, when the heat treatment method is applied to the process of reactivation of the electrocatalyst, the operation involves a plurality of steps such as stripping of the catalyst from the electrode surface, activation of the catalyst, recoating of the catalyst and the like due to the great difference between the use condition of the electrocatalyst and the heat treatment condition, so that the operation is complicated and long, the electrode surface and the whole electrocatalyst system are easily damaged in the process, and the practical application is severely limited.
Accordingly, there is a need in the art to develop a method for effectively reducing the size of carbon-supported metal nanoparticles under electrochemical conditions and even obtaining atomic catalysts.
Disclosure of Invention
The invention aims to provide an electrochemical method for reducing the size of a carbon-supported metal nanoparticle electrocatalyst, which mainly solves the problems that the prior art is difficult to convert large-size metal particles into small-size particles, or high-temperature treatment conditions are involved in the conversion process, and the electrochemical method is not suitable for application under electrochemical conditions.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an electrochemical method for reducing the size of the electric catalyst of carbon-carried metal nanoparticles features that an electrochemical two-electrode or three-electrode system is built, the working electrode is a carbon-carried metal nanoparticle electrode, and then the negative potential lower than-1V is continuously applied to the working electrode in alkali solution or salt solution of alkali metal as electrolyte.
Preferably, a negative potential below-1V is continuously applied to the working electrode for a holding time greater than 1min.
Preferably, platinum or graphite is used as the counter electrode when constructing an electrochemical two-electrode system.
Or when constructing an electrochemical three-electrode system, platinum or graphite is used as a counter electrode, and any one of a mercury/mercury oxide electrode, a silver/silver chloride electrode and a calomel electrode is used as a reference electrode.
Specifically, in the carbon-supported metal nanoparticle electrode, the carbon material is any one of graphene, carbon nanotubes, carbon cloth, carbon paper, graphite foil and corresponding dopants.
Specifically, in the carbon-supported metal nanoparticle electrode, the metal is any one of platinum, palladium, gold, silver, iridium, copper, nickel, iron and cobalt.
Specifically, when the electrolyte is an alkali solution of an alkali metal, the alkali is a hydroxide of any one of lithium, sodium, and potassium.
Or when the electrolyte is a salt solution of alkali metal, the salt is any one of sulfate, carbonate, hydrochloride and nitrate.
Specifically, the carbon-supported metal nanoparticle electrode is obtained by loading metal nanoparticles on a carbon material and then coating the carbon material on the surface of the electrode; or the metal nano particles are directly used as a self-supporting electrode after being loaded on the carbon material, and the self-supporting electrode is the carbon-loaded metal nano particle electrode.
Alternatively, the carbon-supported metal nanoparticle electrode is a carbon-supported metal nanoparticle electrode that has been used and in which metal particles have been agglomerated.
The design principle of the invention is as follows: under the electrochemical two-electrode or three-electrode system, a carbon-supported metal catalyst is used as a working electrode, a larger negative potential is applied to an alkali metal salt solution, and the cathode corrosion phenomenon is utilized to convert large-size metal particles into small-size metal particles, even metal monoatoms.
Compared with the prior art, the invention has the following beneficial effects:
(1) Compared with the method for reducing the catalyst size by heat treatment, the method is carried out in a water phase system, does not involve a high-temperature treatment process, and has short treatment time; and the electrode surface and the whole electrocatalytic system are not damaged, and the treatment mode is simpler and more reliable. Thus being completely suitable for application under electrochemical conditions.
(2) Because the invention combines the continuous application of negative potential in the water phase system to realize the reduction of the size of the metal catalyst, based on the characteristics, the invention is applicable to various carbon materials and dopant matrixes thereof, and is applicable to various metal nanoparticle systems; the method is applicable to powder materials and self-supporting electrode systems; can be used for preparing metal catalysts and reactivating agglomerated metal nanoparticle catalysts; the method has the effect of reducing the size of metal nanoparticle systems with different sizes, and can prepare metal monoatomic catalysts. Therefore, the invention has good universality, well breaks through the limit of the prior art, satisfies the preparation of various carbon-supported metal (such as platinum, palladium, copper and the like) nanoparticle electrocatalysts and the regeneration of catalytic activity, provides a good front-end foundation for the application of small-size metal catalysts in the fields of electrolysis water, fuel cells and the like, and is very suitable for popularization and application.
(3) The electrolyte has wide selection range, can directly change the potential in situ for some reactions (such as an electrolyte catalyst in an alkaline electrolytic cell), well balances the operation efficiency and the cost, and flexibly meets the requirements of practical application.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Fig. 2 shows the embodiment 1 of the present invention: (a) Platinum particle-aza carbon cloth scanning electron microscope image before electrochemical treatment; (b) Scanning electron microscope images of platinum particles and monoatomic mixtures after 5 minutes of electrochemical treatment; (c) Ball difference correction transmission scanning electron microscope image of monoatomic platinum after electrochemical treatment for 10 minutes; (d) And (3) preparing a single-atom platinum-aza carbon cloth scanning electron microscope image.
FIG. 3 is a schematic illustration of the catalytic hydrogen evolution reaction of a single atom of platinum-aza carbon cloth as a self-supporting electrode in example 1: (a) a polarization profile; (b) tafel plot; (c) an accelerated degradation test schematic; (d) potentiostatic test schematic.
Fig. 4 is a diagram of the present invention-example 2: (a, b) platinum particle-carbon cloth scanning electron microscopy images before electrochemical treatment; (c, d) platinum particle-carbon cloth scanning electron microscopy with reduced dimensions after electrochemical treatment.
Fig. 5 is a diagram of the present invention-example 3: (a, b) copper particle-carbon cloth scanning electron microscopy images before electrochemical treatment; (c, d) scanning electron microscope pictures of copper particles-carbon cloth with reduced size after electrochemical treatment.
Fig. 6 is a diagram of the present invention-example 4: (a) Gold particle-carbon cloth scanning electron microscope image before electrochemical treatment; (b) And (3) reducing the size of the gold particle-carbon cloth scanning electron microscope image after electrochemical treatment.
Detailed Description
The invention provides a method for reducing the size of various carbon-supported metal nanoparticle electrocatalysts, which can be performed under electrochemical conditions, has the advantages of simple operation, low energy consumption and short time consumption, and can be used for preparing small-size metal catalysts and reactivating agglomerated metal catalysts. The flow of the invention is summarized and mainly divided into the construction of an electrolytic system and the reduction of the metal particle size by negative potential treatment, as shown in fig. 1.
Firstly, an electrolytic system is constructed. In the present invention, a three-electrode system or a two-electrode system is constructed using a carbon-supported metal nanoparticle catalyst as a working electrode, and an alkali or salt solution of an alkali metal is used as an electrolyte. Specifically, the carbon-supported metal nanoparticle electrode is obtained by loading metal nanoparticles on a carbon material (for example, preparing the carbon-supported metal nanoparticles by adopting chemical reduction, electrodeposition and other methods), and then coating the carbon-supported metal nanoparticles on the surface of the electrode or directly serving as a self-supporting electrode, or a carbon-supported metal particle system in which metal particles are agglomerated for a period of time. The carbon material has no special requirement, and can be carbon materials such as graphene, carbon nano tube, carbon cloth, carbon paper, graphite foil and the like and corresponding dopants of the carbon materials; the metal has wide application range and can be nano particles of metals such as platinum, palladium, gold, silver, iridium, copper, nickel, iron, cobalt and the like; the alkali metal alkali or salt solution has wide selection range, and can be hydroxide solution of alkali metal such as lithium, sodium, potassium and the like, solution of sulfate, carbonate, hydrochloride, nitrate and the like. In a word, the invention has wide selection range of the electrolytic system, is applicable to various metal types and is applicable to nano particles with different sizes.
And secondly, reducing the size of the metal particles by negative potential treatment. In the invention, a larger negative potential is applied to the working electrode and is kept for a period of time, thus effectively reducing the size of the carbon-supported metal nanoparticle catalyst. Specifically, different negative potentials can be selected for different metals, the magnitude of which can affect the metal particle size reduction rate and the metal loss rate during processing. The negative potential adopted in the embodiment is lower than-1V, and the treatment time is longer than 1min. Under the treatment condition, the method has the characteristics of short electrochemical treatment time, relatively mild treatment condition, small influence on the carbon material carrier and small influence on the original electrolysis system, and can realize the reactivation of the catalyst in situ in some cases.
The invention is further described below with reference to the accompanying drawings and examples.
Example 1
The aza-carbon cloth is electrodeposited in a chloroplatinic acid solution by 0.2V to prepare the platinum nano particle-aza-carbon cloth self-supporting electrode. The three-electrode system is formed by taking platinum nano particles-aza carbon cloth as a working electrode, a platinum net as a counter electrode and mercury/mercury oxide as a reference electrode. Treating for 10min in 10mol/L sodium hydroxide solution at negative potential of-8V, and then rinsing with deionized water to obtain the monoatomic platinum-aza carbon cloth self-supporting electrode.
As can be seen from FIG. 2a, the platinum nanoparticle-aza-carbon cloth has a platinum particle size of about 2nm and a non-uniform size distribution. After 5min of treatment at-8V, the large-size particles disappeared and the platinum cluster (around 1 nm) was present simultaneously with the platinum monoatoms (see FIG. 2 b). And continuing the electrochemical treatment for 10min to obtain platinum monoatoms with uniform distribution (see figure 2 c).
In addition, the existence of large-size platinum particles is not observed in the scanning electron microscope photograph, and the electrochemical treatment process has little influence on the surface morphology, and the aza-carbon cloth substrate still maintains the nano array structure (see fig. 2 d). The prepared platinum monoatomic-aza carbon cloth is used for catalyzing hydrogen evolution reaction, and the electrode can be found that the current density is 10mA cm -2 The time overpotential was only 0.022V, which is also superior to commercial platinum carbon catalyst (0.041V) due to the platinum nanoparticle-aza carbon cloth electrode (0.032V) before electrochemical treatment (see fig. 3 a). The Tafil slope of the platinum monoatomic-aza-carbon cloth catalytic hydrogen evolution reaction is 29.5mV dec -1 Is superior to platinum nanoparticle-aza carbon cloth electrode (36.3 mV dec before electrochemical treatment -1 ) (see FIG. 3 b). And the platinum monoatomic-aza carbon cloth also shows good stability, the polarization curve of the platinum monoatomic-aza carbon cloth is basically unchanged after 5000 circles of accelerated degradation experiments (see figure 3 c), and the current density of the platinum monoatomic-aza carbon cloth is basically unchanged under 100h constant potential test (see figure 3 d).
Example 2
The gold nanoparticle-carbon cloth composite electrode prepared by a chemical reduction method is used as a working electrode, a platinum net is used as a counter electrode, and a silver/silver chloride electrode is used as a reference electrode to form a three-electrode system. Treating for 10min in 1mol/L sodium sulfate solution at minus 10V negative potential, and then rinsing with deionized water to obtain gold particles with reduced size.
As can be seen from fig. 4a and b, the gold particle size in the gold nanoparticle-carbon cloth is about 500nm, and the size distribution and the spatial distribution are extremely uneven. After electrochemical treatment, the large-size particles disappear, and gold nanoparticles with the size of about 50nm are uniformly dispersed on the surface of the carbon cloth (see fig. 4c and d).
Example 3
The copper nanoparticle-carbon cloth composite electrode prepared by an electrochemical reduction method is used as a negative electrode, and the platinum mesh is used as a positive electrode to form a two-electrode system. And (3) applying 10V voltage in 1mol/L potassium sulfate solution, treating for 20min, and then rinsing with deionized water to obtain the copper particles with reduced size.
As can be seen from fig. 5a and b, the copper particles in the copper nanoparticle-carbon cloth are about 800nm in size and are unevenly spatially distributed. After electrochemical treatment, the large-size particles disappear, and copper nanoparticles with a size of about 40nm are uniformly dispersed on the surface of the carbon cloth (see fig. 5c and d).
Example 4
The commercial Pt/C catalyst with reduced activity is used as a working electrode, graphite is used as a counter electrode, and a calomel electrode is used as a reference electrode to form a three-electrode system. Treating for 10min in a potassium chloride solution of 2mol/L at-5V, and then rinsing with deionized water to obtain the platinum particles with reduced size.
As can be seen from FIG. 6a, the Pt/C catalyst having reduced activity has a very uneven distribution of platinum particle size, and a large number of platinum particles are agglomerated into particles having a size of about 20 nm. After the electrochemical treatment, the large-sized particles disappeared, and platinum nanoparticles having a size of about 3nm were uniformly dispersed on the surface of the carbon substrate (see fig. 6 b).
The above examples are only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but the technical problems solved by the present invention are still consistent with the present invention, even though meaningless modifications or color changes are made in the spirit and spirit of the subject design of the present invention, and all the technical problems should be included in the scope of the present invention.
Claims (2)
1. An electrochemical method for reducing the size of a carbon-supported metal nanoparticle electrocatalyst is characterized by constructing an electrochemical two-electrode or three-electrode system, wherein a working electrode is a carbon-supported metal nanoparticle electrode, and then directly and continuously applying negative potential lower than-1V to the working electrode in an alkaline solution or a salt solution of an alkaline metal in an electrolyte, so that the size of the carbon-supported metal nanoparticle electrocatalyst can be reduced;
when an electrochemical two-electrode system is constructed, platinum or graphite is adopted as a counter electrode; when an electrochemical three-electrode system is constructed, platinum or graphite is adopted as a counter electrode, and any one of a mercury/mercury oxide electrode, a silver/silver chloride electrode and a calomel electrode is adopted as a reference electrode;
the carbon-supported metal nanoparticle electrode is obtained by loading metal nanoparticles on a carbon material and then coating the carbon material on the surface of the electrode; or directly taking the metal nano particles as a self-supporting electrode after being loaded on a carbon material, wherein the self-supporting electrode is the carbon-loaded metal nano particle electrode; alternatively, the carbon-supported metal nanoparticle electrode is a carbon-supported metal nanoparticle electrode that has been used and in which metal particles have been agglomerated; in the carbon-supported metal nanoparticle electrode, the carbon material is carbon cloth or aza-carbon cloth; the metal is platinum, gold or copper;
when the electrolyte is an alkali solution of alkali metal, the alkali is hydroxide of any alkali metal of lithium, sodium and potassium; when the electrolyte is an alkali metal salt solution, the salt is any one of sulfate, carbonate, hydrochloride and nitrate.
2. An electrochemical process for reducing the size of a carbon supported metal nanoparticle electrocatalyst according to claim 1, wherein a negative potential below-1V is continuously applied to the working electrode for a holding time greater than 1min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650293.3A CN111841663B (en) | 2020-07-08 | 2020-07-08 | Electrochemical method for reducing size of carbon-supported metal nanoparticle electrocatalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650293.3A CN111841663B (en) | 2020-07-08 | 2020-07-08 | Electrochemical method for reducing size of carbon-supported metal nanoparticle electrocatalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111841663A CN111841663A (en) | 2020-10-30 |
| CN111841663B true CN111841663B (en) | 2023-07-25 |
Family
ID=73152954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010650293.3A Active CN111841663B (en) | 2020-07-08 | 2020-07-08 | Electrochemical method for reducing size of carbon-supported metal nanoparticle electrocatalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111841663B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117258823B (en) * | 2023-09-21 | 2025-12-09 | 中国工程物理研究院材料研究所 | Method for preparing monoatomic catalyst based on cathode corrosion phenomenon |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130139577A (en) * | 2012-06-13 | 2013-12-23 | 고려대학교 산학협력단 | Process for preparing highly efficient carbon supported platinum-metal catalyst and carbon supported platinum-metal catalyst thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259410B (en) * | 2008-04-14 | 2010-12-29 | 北京科技大学 | Method for preparing platinum catalyst by electrodeposition |
| NL2005112C2 (en) * | 2010-07-19 | 2012-01-23 | Univ Leiden | Process to prepare metal nanoparticles or metal oxide nanoparticles. |
| KR102093824B1 (en) * | 2018-05-02 | 2020-03-26 | 한국과학기술연구원 | Preparation method of carbon-supported platinum-transition metal alloy nanopaticle catalyst |
| CN109887754B (en) * | 2019-03-04 | 2021-08-20 | 东莞理工学院 | Single-atom Pt counter electrode, preparation method and application thereof |
| CN110201662B (en) * | 2019-05-08 | 2020-06-23 | 厦门大学 | Electrochemical preparation method of carbon-supported monatomic metal catalyst |
-
2020
- 2020-07-08 CN CN202010650293.3A patent/CN111841663B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130139577A (en) * | 2012-06-13 | 2013-12-23 | 고려대학교 산학협력단 | Process for preparing highly efficient carbon supported platinum-metal catalyst and carbon supported platinum-metal catalyst thereof |
Non-Patent Citations (2)
| Title |
|---|
| 微波合成碳负载纳米铂催化剂及其对甲醇氧化的电催化性能;陈卫祥;《化学学报》;第62卷;全文 * |
| 活化和氮掺杂炭层包覆碳纳米管载铂催化剂电催化性能研究;安百钢;黄芬;李莉香;徐诗飞;耿新;;《功能材料》;第44卷(第23期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111841663A (en) | 2020-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xie et al. | Ultrathin platinum nanowire based electrodes for high-efficiency hydrogen generation in practical electrolyzer cells | |
| CN110252335B (en) | Carbon-coated nickel-ruthenium nano material and preparation method and application thereof | |
| Yi et al. | Enhanced activity of Au–Fe/C anodic electrocatalyst for direct borohydride-hydrogen peroxide fuel cell | |
| Ding et al. | Electrocatalytic activity of multi-walled carbon nanotubes-supported PtxPdy catalysts prepared by a pyrolysis process toward ethanol oxidation reaction | |
| Du et al. | Surfactant-free and template-free electrochemical approach to prepare well-dispersed Pt nanosheets and their high electrocatalytic activities for ammonia oxidation | |
| Yang et al. | Support engineering modulated Pt/hierarchical MoSe2@ mesoporous hollow carbon spheres for efficient methanol-assisted water splitting | |
| Zhao et al. | Platinum nanoparticles supported on epitaxial TiC/nanodiamond as an electrocatalyst with enhanced durability for fuel cells | |
| Yang et al. | Hierarchical reduced graphene oxide supported dealloyed platinum–copper nanoparticles for highly efficient methanol electrooxidation | |
| CN113398923B (en) | A carbon-supported IrO2@Ir heterojunction composite catalyst with strawberry-like structure and its preparation method and application | |
| Rahsepar et al. | Synthesis of multiwall carbon nanotubes with a high loading of Pt by a microwave-assisted impregnation method for use in the oxygen reduction reaction | |
| Liu et al. | Investigation of nanoporous carbon supported palladium–zinc nanocomposites as anode catalysts for direct borohydride–hydrogen peroxide fuel cell | |
| Salomé et al. | Development of silver-gas diffusion electrodes for the oxygen reduction reaction by electrodeposition | |
| Yi et al. | Carbon-supported Pd-Co nanocatalyst as highly active anodic electrocatalyst for direct borohydride/hydrogen peroxide fuel cells | |
| Zhao et al. | Highly active carbon nanotube-supported Pd electrocatalyst for oxidation of formic acid prepared by etching copper template method | |
| Zhou et al. | Enhanced hydrogen evolution performance by covalent-linked ultrafine, uniform Pt nanoparticles with doped sulfur atoms in three-dimensional graphene | |
| JP2014229516A (en) | Method of producing catalyst for fuel cell | |
| CN111841663B (en) | Electrochemical method for reducing size of carbon-supported metal nanoparticle electrocatalyst | |
| Wei et al. | Electrodepositing Pt by modulated pulse current on a nafion-bonded carbon substrate as an electrode for PEMFC | |
| Yan et al. | Preparation of Au nanoparticles modified TiO2/C core/shell nanowire array and its catalytic performance for NaBH4 oxidation | |
| Valiollahi et al. | Pt hollow nanospheres/graphene electrocatalytic ability toward sodium borohydride oxidation: a study of morphology effect on electrocatalytic activity | |
| Liu et al. | Catalyst of Pt nanoparticles loaded on multi-walled carbon nanotubes with high activity prepared by electrodeposition without supporting electrolyte | |
| Du et al. | Preparation Ru, Bi monolayer modified Pt nanoparticles as the anode catalyst for methanol oxidation | |
| CN112877726B (en) | Ferric hydroxide colloid particle modified nickel-iron hydroxide composite oxygen evolution electrode and preparation method thereof | |
| CN111939897B (en) | A kind of preparation method of platinum nanowire particle catalyst | |
| CN101306364A (en) | A kind of preparation method of direct methanol fuel cell anode catalyst |
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 |