CN108417848A - A kind of platinum-nickel alloy catalyst nano material and the preparation method and application thereof having efficient electric catalytic oxidation-reduction performance - Google Patents
A kind of platinum-nickel alloy catalyst nano material and the preparation method and application thereof having efficient electric catalytic oxidation-reduction performance Download PDFInfo
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- CN108417848A CN108417848A CN201810147908.3A CN201810147908A CN108417848A CN 108417848 A CN108417848 A CN 108417848A CN 201810147908 A CN201810147908 A CN 201810147908A CN 108417848 A CN108417848 A CN 108417848A
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- 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
- H01M4/8825—Methods for deposition of the catalytic active composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- 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
- H01M4/92—Metals of platinum group
- H01M4/921—Alloys or mixtures with metallic elements
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- 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
- H01M4/92—Metals of platinum group
- H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
- H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
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- 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
Abstract
The invention discloses a kind of platinum-nickel alloy nano-catalyst materials and the preparation method and application thereof having efficient electric catalytic oxidation-reduction performance.Preparation method of the present invention is using chloroplatinic acid and nickel acetate as presoma, it is solvent by ethylene glycol, it is acted on using guidance quality of the benzoic acid in Opacity in lens, finally passes through one kettle way heating and reacted, the platinum-nickel alloy catalyst nano material for having efficient electric catalytic oxidation-reduction performance is prepared.The cost of material of preparation method of the present invention is relatively low, easy to operate and control, easy to operate, it is repeated high, it is environmentally protective, it is easy to accomplish large-scale production, the Pt/Ni alloy nano catalyst materials of preparation show the good catalytic activity to oxygen reduction reaction, are more than the level of commercial platinum catalyst.
Description
Technical field
The invention belongs to electrocatalysis material technical fields, and in particular to a kind of platinum having efficient electric catalytic oxidation-reduction performance
Nickel alloy catalyst nano material and the preparation method and application thereof.
Background technology
Fossil energy if being widely used for oil, natural gas and coal has pushed the fast development of human society, but is changed
The stone energy non-renewable and the use of the environmental problem that process is brought is two hang-ups of facing mankind.Develop environment friend
Good, reproducible new energy and new energy technology have become the mostly important research hotspot in the world today, cause that people's is wide
General concern.Fuel cell is a kind of novel energy converting system directly converting chemical energy to without burning electric energy, with it
He compares new energy technology, has energy transition density high, and pollution is small, and fuel diversification, reliability is high, low noise and convenient for dimension
The advantages that shield, is widely regarded as most possibly obtaining the new energy technology of large-scale commercial application.And wherein proton exchange
Membrane cell (Proton exchange membrane fuel cell, PEMFC) is even more low with operating temperature, energy is close
Degree is high, starts the advantages that speed is fast, is expected to be applied to fuel cell electric vehicle and portable energy source field.
Currently, the research of PEMFC has been achieved for prodigious development, and there is exemplary pem fuel electricity successively
Pond power station, electric vehicle, battery of mobile phone etc. emerge.But its service life is low, efficiency is low and defect of high cost limits the big of it
Scale commercial application.Wherein of high cost to be primarily due to be that Nafion membrane and catalyst cost are excessively high, wherein catalyst uses
Platinum group noble metal, of high cost and reserves are limited.I.e. platinum based catalyst problem is the limitation widely applied principal elements of PEMFC.Its
The low several quantity of middle Cathodic oxygen reduction (Oxygen reduction reaction, ORR) speed ratio anodic oxidation reactions
Grade, so needing progress of the platinum based catalysts more more than anode for accelerating oxygen reduction reaction.Therefore, develop low cost,
High activity, the ORR catalyst of high stability are great to the large-scale commercial application value for pushing fuel cell.It is asked for this
Topic, general at present there are two types of solutions：First method is to improve the utilization rate of unit Pt, reduces Pt dosages；Second of side
Rule is to find new effective catalyst to substitute tradition Pt catalyst.At the same time in spite of much about cheap non-platinum catalyst
Research, but in numerous fuel battery cathod catalyst materials, precious metals pt base catalyst is still most effective urges
Agent does not form extensive visible commercialization substitute at present yet.Under current technology, platinum and its alloy are most practical
The nano-particle catalyst for accelerating fuel battery negative pole oxygen reduction reaction of meaning.So replacement or partial alternative Pt bases close
Au catalyst, which is only, reduces the fundamental way that fuel cell cost promotes it to be eventually striking to industrialization, this is also in recent years about combustion
Expect one of the hot spot of cell cathode catalyst research.
By the research of decades, a large amount of Pt bases transition metal alloy is all found to have the work of the ORR better than simple Pt
Property, as PtPd alloys (ACS Catal.2016,6,3428-3432), PtAu alloys (J.Am.Chem. Soc.2015,137,
12597-12609), PtFe alloys (Adv.Mater.2016,28,10673-10678), PtCo alloys (ACS
Appl.Mater.Interfaces 2012,4,6228-6234) and PtNi alloys (Science 348 (6240), 1230-
1234) etc..
The alloy that theoretically Pt and Ni is formed should have oxygen reduction catalytic activity outstanding, and also be sent out in these researchs
Show similar phenomenon, therefore should also have good hydrogen reduction catalytic using platinum-nickel alloy catalyst prepared by one kettle way
Energy.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to which providing one kind having efficient electric catalytic oxidation-reduction performance
Platinum-nickel alloy catalyst nano material preparation method.This method is with chloroplatinic acid (H2PtCl6·6H2) and nickel acetate (Ni O
(CH3COO)2) it is presoma, it is solvent by ethylene glycol, is acted on using guidance quality of the benzoic acid in Opacity in lens, most passed through afterwards
It crosses one kettle way heating to be reacted, specially Pt/Ni alloy nanos oxygen reduction catalyst material is prepared, that is, has efficient electric
The platinum-nickel alloy catalyst nano material of catalytic oxidation-reduction performance.
The present invention also aims to provide one kind made from the preparation method to have efficient electric catalytic oxidation-reduction performance
Platinum-nickel alloy catalyst nano material.
Another object of the present invention, which also resides in, provides a kind of platinum nickel conjunction having efficient electric catalytic oxidation-reduction performance
Au catalyst applications to nanostructures.
The purpose of the present invention is achieved through the following technical solutions.
A kind of preparation method for the platinum-nickel alloy catalyst nano material having efficient electric catalytic oxidation-reduction performance, using one
Prepared by pot method, include the following steps：
(1) under stirring condition, chloroplatinic acid, nickel acetate and benzoic acid are dispersed in ethylene glycol, before obtaining metal
Drive liquid solution；
(2) under ultrasound condition, Ketjen black is dispersed in ethylene glycol, obtains carbon-based solution；
(3) under stirring condition, carbon-based solution is added in metal front liquid solution and is uniformly mixed, is received after heating
Rice alloy solution, is cooled to room temperature, and precipitation is collected by centrifugation, then washed, dry, obtains Pt/Ni alloy nano hydrogen reduction catalysis
Agent material, i.e., the described platinum-nickel alloy catalyst nano material for having efficient electric catalytic oxidation-reduction performance.
Further, in step (1), it is total that the dosage of the chloroplatinic acid accounts for chloroplatinic acid, nickel acetate, benzoic acid and Ketjen black
The 11.25wt% of quality.
Further, in step (1), it is total that the dosage of the nickel acetate accounts for chloroplatinic acid, nickel acetate, benzoic acid and Ketjen black
The 2.08wt% of quality.
Further, in step (1), it is total that the dosage of the benzoic acid accounts for chloroplatinic acid, nickel acetate, benzoic acid and Ketjen black
The 65.27wt% of quality.
Metal front liquid solution is the ethylene glycol solution dissolved with chloroplatinic acid, nickel nitrate and benzoic acid, and chloroplatinic acid therein is made
For the platinum source of catalyst, nickel source of the nickel acetate therein as catalyst, benzoic acid is as the sealing end for influencing Nanoalloy growth
Agent.
Further, in step (2), it is total that the dosage of the Ketjen black accounts for chloroplatinic acid, nickel acetate, benzoic acid and Ketjen black
The 21.40wt% of quality.
Carbon-based solution is the ethylene glycol solution of Ketjen black, carbon-based material of the Ketjen black therein as catalyst.
Further, in step (3), the heating is that 160 DEG C are warming up in 30 minutes simultaneously under the conditions of oil bath heating
It is kept for 12 hours.
Further, in step (3), the washing is washed 3 times with ethyl alcohol.
Further, in step (3), the drying is rotated to constant weight under 30~40rpm rotating speeds.
The platinum-nickel alloy for having efficient electric catalytic oxidation-reduction performance made from preparation method described in any one of the above embodiments is urged
The grain size of agent nano material, material is 4~5nm.
A kind of platinum-nickel alloy catalyst nano material having efficient electric catalytic oxidation-reduction performance is urged applied to electricity
Change oxygen reduction reaction.
Compared with prior art, the invention has the advantages that and technique effect：
(1) cost of material of preparation method of the present invention is relatively low, easy to operate and control, easy to operate, and repeatability is high, entirely
Preparation process can be combined with traditional solvent method for preparing, be had noble metal cathod catalyst time scale, industrialization
Foreground；
(2) present invention is on the basis of improveing traditional infusion process, i.e., uniform by metal salt presoma before reaction causes
Be dispersed in it is carbon-based in, effectively enhance alloy particle and it is carbon-based between active force, obtain finely dispersed Pt/Ni alloys
Grain, to improve alloy as catalyst utilization rate, the Pt/Ni alloy nano catalyst materials of preparation are shown to the good of oxygen reduction reaction
Good catalytic activity is more than the level of commercial platinum catalyst；
(3) preparation method of the present invention first separates metal front liquid solution and carbon-based solution in pretreatment process, can protect
Alloy preferably molding dispersion in the synthesis process is demonstrate,proved, while selecting ethylene glycol as the toxic action of reaction dissolvent far fewer than now
There is the n,N-Dimethylformamide in formula；
(4) present invention introduces benzoic acid and Ketjen black to modify catalyst, and by the introducing of benzoic acid, it is fixed to play
To the process of guiding crystal nucleation and growth, the alloy crystal of uniform monodisperse small size is synthesized, and then effectively improves catalysis effect
It answers；And compared with other carbon-based materials, Ketjen black can keep high electric conductivity while relatively smaller dosage, can auxiliary electron
Conductive process.
Description of the drawings
Fig. 1 is transmission electron microscope of the Pt/Ni alloy catalysts nano material of the preparation of embodiment 1 under 50nm scales
(TEM) figure；
Fig. 2 is transmission electron microscope of the Pt/Ni alloy catalysts nano material of the preparation of embodiment 1 under 20nm scales
(TEM) figure；
Fig. 3 is transmission electron microscope of the Pt/Ni alloy catalysts nano material of the preparation of embodiment 2 under 20nm scales
(TEM) figure；
Fig. 4 is transmission electron microscope of the Pt/Ni alloy catalysts nano material of the preparation of embodiment 2 under 5nm scales
(TEM) figure；
Fig. 5 is the XRD diagram of Pt/Ni alloy catalyst nano materials prepared by embodiment 2；
Fig. 6 is the rotation of Pt/Ni alloy catalysts nano material prepared by Examples 1 to 4 and the coating of business Pt/C materials
Turn polarization curve of the disk glassy carbon electrode in the KOH aqueous solutions of the 0.1mol/L of saturation；
Fig. 7 is the rotational circle of Pt/Ni alloy catalysts nano material prepared by embodiment 2 and the coating of business Pt/C materials
Polarization curve of the disk glassy carbon electrode in the KOH aqueous solutions of the 0.1mol/L of saturation.
Specific implementation mode
Technical solution of the present invention is described in further detail below in conjunction with specific implementation mode and attached drawing, but the present invention
Embodiment and protection domain are without being limited thereto.
Embodiment 1
(1) 0.0406mmol chloroplatinic acids, 0.0156mmol nickel acetates and 122mg benzoic acid is taken to be dissolved in 60mL ethylene glycol
In, and ultrasonic disperse is uniform at normal temperatures, obtains metal front liquid solution；
(2) obtained metal front liquid solution is placed in three-necked flask, magnetic agitation is opened, by oil bath at 30 minutes
160 DEG C are inside warming up to, metal precursor solution temperature keeps the thermotonus 12 hours after reaching 160 DEG C, obtain Pt/Ni alloys
Solution；
(3) obtained Pt/Ni alloy solutions are impregnated into the Ketjen black of 40mg while hot, ultrasound is disperseed for 2 hours and cooling
To room temperature, precipitation is collected by centrifugation under 1000rpm rotating speeds with centrifuge, ethyl alcohol is used in combination to clean 3 times, the alloy after cleaning is molten
Liquid goes to revolving device and is rotated to constant weight under the rotating speed of 30rpm, obtains powdered platinum-nickel alloy catalyst nano material
Material.
TEM figure of the platinum-nickel alloy catalyst nano material obtained under 50nm scales is as shown in Figure 1, as shown in Figure 1, lead to
The alloying pellet that relatively uniform dispersion is prepared in the method is crossed, but has apparent particle agglomeration phenomenon in subregion.
TEM figure of the platinum-nickel alloy catalyst nano material obtained under 20nm scales as shown in Fig. 2, as shown in Figure 2,
In obtained dispersion alloy particle, there is only the agglomerations of particle, and irregular grain shape is also partly presented.
Embodiment 2
(1) that 0.0406mmol chloroplatinic acids, 0.0156mmol nickel acetates and 122mg benzoic acid are subject to magnetic agitation 12 is small
When be dissolved in 20mL ethylene glycol, obtain metal front liquid solution；40mg Ketjen blacks are dissolved in 40mL ethylene glycol, and normal
The lower ultrasound of temperature keeps its evenly dispersed in 2 hours, obtains carbon-based solution；
(2) under agitation, carbon-based solution is added in metal front liquid solution and forms evenly dispersed mixed solution,
Be placed in three-necked flask again, open magnetic agitation, continuing magnetic force stirs be uniformly dispersed within 2 hours after after, by oil bath at 30 minutes
Inside it is warming up to 160 DEG C；Mixed solution temperature keeps the thermotonus 12 hours after reaching 160 DEG C, be cooled to room temperature, obtain Pt/
Ni alloy solutions；
(3) precipitation under the rotating speed of 1000rpm is collected by centrifugation with centrifuge in obtained Pt/Ni alloy solutions, second is used in combination
Alcohol cleans 3 times, and the alloy solution after cleaning, which is gone to revolving device, to be rotated under the rotating speed of 30rpm to constant weight, and powder is obtained
The platinum-nickel alloy catalyst nano material of last shape.
TEM figure of the platinum-nickel alloy catalyst nano material obtained under 20nm scales is as shown in figure 3, from the figure 3, it may be seen that logical
Cross that alloying pellet shape made from the method is regular, size is small and is uniformly dispersed.
TEM figures under platinum-nickel alloy catalyst nano material 5nm scales obtained are as shown in figure 4, by Fig. 4 it is found that being made
Alloying pellet it is rounded and be about 4.5nm through the average grain diameter of alloying pellet known to measuring.
The XRD diagram of platinum-nickel alloy catalyst nano material obtained as shown in figure 5, as shown in Figure 5, by reference to pure platinum with
And pure nickel goes out peak position, the peak position that goes out of comparative analysis sample can be confirmed that obtained is platinum-nickel alloy.
Embodiment 3
(1) 0.0406mmol chloroplatinic acids and 0.0156mmol nickel acetates are subject to magnetic agitation and are dissolved in 20mL in 12 hours
In ethylene glycol, metal front liquid solution is obtained；40mg Ketjen blacks are dissolved in 40mL ethylene glycol, and ultrasound 2 is small at normal temperatures
When keep its evenly dispersed, obtain carbon-based solution；
(2) under agitation, carbon-based solution is added in metal front liquid solution and forms evenly dispersed mixed solution,
It is placed in three-necked flask again, magnetic agitation is opened, after continuing magnetic force stirring is uniformly dispersed for 2 hours, by oil bath in 30 minutes
It is warming up to 160 DEG C；Mixed solution temperature keeps the thermotonus 12 hours after reaching 160 DEG C, be cooled to room temperature, obtain Pt/Ni
Alloy solution；
(3) precipitation under the rotating speed of 1000rpm is collected by centrifugation with centrifuge in obtained Pt/Ni alloy solutions, second is used in combination
Alcohol cleans 3 times, and the alloy solution after cleaning, which is gone to revolving device, to be rotated under the rotating speed of 30rpm to constant weight, and powder is obtained
The platinum-nickel alloy catalyst nano material of last shape.
Embodiment 4
(1) that 0.0406mmol chloroplatinic acids, 0.0156mmol nickel acetates and 122mg benzoic acid are subject to magnetic agitation 12 is small
When be dissolved in 20mL ethylene glycol, obtain metal front liquid solution；40mg Ketjen blacks are dissolved in 40mL ethylene glycol, and normal
The lower ultrasound of temperature keeps its evenly dispersed in 2 hours, obtains carbon-based solution；
(2) under agitation, carbon-based solution is added in metal front liquid solution and forms evenly dispersed mixed solution,
It is placed in three-necked flask again, magnetic agitation is opened, after continuing magnetic force stirring is uniformly dispersed for 2 hours, by oil bath in 30 minutes
It is warming up to 160 DEG C；Mixed solution temperature keeps the thermotonus 16 hours after reaching 160 DEG C, be cooled to room temperature, obtain Pt/Ni
Alloy solution；
(3) precipitation under the rotating speed of 1000rpm is collected by centrifugation with centrifuge in obtained Pt/Ni alloy solutions, second is used in combination
Alcohol cleans 3 times, and the alloy solution after cleaning, which is gone to revolving device, to be rotated under the rotating speed of 30rpm to constant weight, and powder is obtained
The platinum-nickel alloy catalyst nano material of last shape.
Platinum-nickel alloy catalyst nano material prepared by Examples 1 to 4 and business Pt/C materials (Kunshan
WingRise it) is coated on a diameter of 0.5cm, on the rotating circular disk glassy carbon electrode that rotary speed is 1600rpm, is saturated in oxygen
0.1moI/L KOH aqueous solutions in test to the catalytic performance of oxygen reduction reaction, obtained polarization curve is as shown in Figure 6.
In the polarization curve such as Fig. 6 of business Pt/C materials shown in E curves.Embodiment 1 is supported on by infusion process on carbon-based
Platinum-nickel alloy catalyst nano material polarization curve such as Fig. 6 in shown in A curves, platinum that embodiment 2 is prepared by one-step method
In the polarization curve of nickel alloy catalyst nano material such as Fig. 6 shown in B curves, correlation curve A and curve B can see, and pass through
Change the sequence of carbon-based addition, the half-wave voltage and starting voltage of platinum-nickel alloy catalyst nano material prepared by embodiment 2 have
It is significant to improve.
Embodiment 3 is not added with C in the polarization curve such as Fig. 6 of the platinum-nickel alloy catalyst nano material of end-capping reagent benzoic acid
Shown in curve, it can be seen that half wave potential is substantially reduced compared with curve B；4 reaction temperature of embodiment extends to 16 hours and is prepared
Platinum-nickel alloy catalyst nano material polarization curve such as Fig. 6 in shown in D curves, it can be seen that half wave potential and starting voltage
Close to curve B, but carrying current is much smaller than B.
It is (specific that platinum-nickel alloy oxygen reduction catalyst (curve B) prepared by 2 one-step method of embodiment presents best catalytic activity
Polarization of the rotating circular disk glassy carbon electrode coated with business Pt/C materials in the KOH aqueous solutions of the 0.1mol/L of saturation is bent
Line comparison diagram is as shown in Figure 7), it is about 0.89vs.RHE that half wave potential can be read from curve B, and catalyst performance can be with
(half-wave voltage of Pt is about 0.83vs.RHE) is compared with Pt, and there is excellent redox reactions catalytic activity.
To sum up, the platinum-nickel alloy nano-catalyst material that prepared by preparation method of the invention has preparation process simple, at
The advantages that this is low, and catalytic activity is high has wide application prospect in practical applications.
Above example is merely preferred embodiments of the present invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the variation that can readily occur in or replaces in the technical scope that discloses of the present invention
It changes, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Subject to enclosing.
Claims (10)
1. a kind of preparation method for the platinum-nickel alloy catalyst nano material having efficient electric catalytic oxidation-reduction performance, feature exist
In including the following steps：
(1) under stirring condition, chloroplatinic acid, nickel acetate and benzoic acid is dispersed in ethylene glycol, metal precursor is obtained
Solution；
(2) under ultrasound condition, Ketjen black is dispersed in ethylene glycol, obtains carbon-based solution；
(3) under stirring condition, carbon-based solution is added in metal front liquid solution and is uniformly mixed, nanometer conjunction is obtained after heating
Gold solution is cooled to room temperature, and is collected by centrifugation precipitation, then washed, dry, obtains described having efficient electric catalytic oxidation-reduction performance
Platinum-nickel alloy catalyst nano material.
2. preparation method according to claim 1, which is characterized in that in step (1), the dosage of the chloroplatinic acid accounts for chlorine platinum
The 11.25wt% of acid, nickel acetate, benzoic acid and Ketjen black gross mass.
3. preparation method according to claim 1, which is characterized in that in step (1), the dosage of the nickel acetate accounts for chlorine platinum
The 2.08wt% of acid, nickel acetate, benzoic acid and Ketjen black gross mass.
4. preparation method according to claim 1, which is characterized in that in step (1), the dosage of the benzoic acid accounts for chlorine platinum
The 65.27wt% of acid, nickel acetate, benzoic acid and Ketjen black gross mass.
5. preparation method according to claim 1, which is characterized in that in step (2), the dosage of the Ketjen black accounts for chlorine platinum
The 21.40wt% of acid, nickel acetate, benzoic acid and Ketjen black gross mass.
6. preparation method according to claim 1, which is characterized in that in step (3), the heating is in oil bath heating item
Under part, it is warming up to 160 DEG C in 30 minutes and is kept for 12 hours.
7. preparation method according to claim 1, which is characterized in that in step (3), the washing is to wash 3 with ethyl alcohol
It is secondary.
8. preparation method according to claim 1, which is characterized in that in step (3), the drying is in 30~40rpm
It is rotated to constant weight under rotating speed.
9. having the platinum nickel of efficient electric catalytic oxidation-reduction performance made from claim 1~8 any one of them preparation method
Alloy catalyst nano material, which is characterized in that the grain size of material is 4~5nm.
10. a kind of platinum-nickel alloy catalyst nano material having efficient electric catalytic oxidation-reduction performance described in claim 9 is answered
For electrocatalytic oxidation reduction reaction.
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| CN111715236A (en) * | 2020-06-02 | 2020-09-29 | 孙黎明 | Preparation method of multi-layer nano platinum-nickel alloy nano dendrite material |
| CN114226436A (en) * | 2021-11-30 | 2022-03-25 | 浙江大学杭州国际科创中心 | Metal nanocrystalline modified composite electrode and preparation method and application thereof |
| CN114725409A (en) * | 2022-03-30 | 2022-07-08 | 宁波杭州湾新材料研究院 | Platinum-nickel nanocrystalline modified carbon-based catalyst and gram-grade low-pressure preparation method and application thereof |
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