CN1803292A - Carbon-carried platinum-based catalyst for fuel cell and its preparation method - Google Patents
Carbon-carried platinum-based catalyst for fuel cell and its preparation method Download PDFInfo
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Abstract
The invention discloses a making method of platinum-on-carbon based catalyst in the fuel battery, which comprises the following steps: adding the metal salt pioneer body, complexing agent and alcohol reducer in the organic solvent; stirring at atmospheric temperature; adding alkaline material; adjusting the pH value; protecting heat reflux through nitrogen or in the autoclave; adding the carbon carrier to stir at atmospheric temperature; diffusing the metal sol particle evenly on the carbon carrier; adding acid material to adjust the pH value; adding second distilled water to break sol through ultrasonic shock; filtering the filter cake until the Cl- is not detected; drying the vacuum; cooling; grinding to produce the platinum-on-carbon based catalyst within Pt/C, Pt-Ru/C, Pt-Ru-Ir/C, Pt/CNT, Pt-Ru/CNT and Pt-Ru-Ir/CNT.
Description
Technical field
The present invention relates to the fuel-cell catalyst field, specifically be meant carbon-carried platinum-based catalyst that is used for by fuel cell and preparation method thereof.
Background technology
Fuel cell is a kind of device that can directly the chemical energy of fuel efficiently and cleanly be transformed into electric energy.Proton Exchange Membrane Fuel Cells (PEMFC) and directly alcohol fuel battery (DAFC) be considered to be hopeful most to be used for traffic, communication and other move the fuel cell of purposes, because this two classes battery is in vehicle power source, various mobile communication power supply, military wide application prospect with aspects such as power supplys, therefore the research of relevant this types of fuel cells has been subjected to the great attention of various countries.
Run into some problems in this two types of fuel cells commercialization process at present, wherein the most outstanding is its price height, and the life-span is short.For being the RPEMFC and the DAFC of fuel, also there is the problem of the easy poisoning and deactivation of catalyst with reformation gas.And these problems all have with the performance of catalyst and get in touch closely, so the high performance fuel cell catalyst of developmental research a new generation is significant for the research and development that promotes fuel cell.
Catalyst material is one of the most key material of this two types of fuel cells.The Preparation of catalysts method mainly contains immersion reduction method, ion-exchange, the precipitation method, gas phase reduction process, microwave method, colloid method etc. at present, but the particle diameter that these methods sometimes can not better controlled activity of such catalysts component is difficult to obtain the active component high degree of dispersion, granularity is little and disperses metal supported catalyst very uniformly.Yet metallic catalyst little for particle, good dispersion degree can have bigger electro-chemical activity area, thereby better catalytic performance is arranged; In addition, have certain poison resistance though be widely used as the PtRu/C of the anode catalyst of RPEMFC and DAFC at present, its active and antitoxin performance from the fuel cell commercialization to the requirement of catalyst performance very big distance in addition.Cause excessive and too high having become of cost of noble metal dosage to influence one of PEMFC and the business-like significant obstacle of DMFC fuel cell because at present the performance of the catalyst that uses is not high enough.
Except the problems referred to above, traditional preparation method goes back ubiquity and uses harmful reducing agent or process waste material to wait problems such as environment is unfriendly more.Therefore, explore high performance catalyst of new generation and preparation method thereof, become one of most important problem in the present fuel cell studies work.
Chinese patent 00112136.7 discloses a kind of preparation method of fuel battery anode catalyst.The titanium oxide that particles such as carbon loaded with nano level platinum that this method will make by chemical reduction method or platinum ruthenium and sol-gel processing make mixes by certain mol proportion, in certain atmosphere, heat-treat then, obtain the platinum-titanium oxide or the platinum-ruthenium-catalyst such as titanium oxide of carbon load.This catalyst has advantages of high catalytic activity, the ability that stable and stronger preferably anti-CO poisons.The particle diameter of the noble metal component of the catalyst that this method makes is 2-30nm, and this method also need be used formaldehyde in addition, and formic acid etc. are made harmful reducing agent, can cause environmental pollution to a certain extent.
Chinese patent 03113658.3 discloses the preparation method of a kind of DMFC ternary anode catalyst Pt-W-Sn/C, be that carbon black is dispersed in the distilled water, add chloroplatinic acid, tungstates and pink salt then, stirring makes that slaine and chloroplatinic acid are fully adsorbed, and dropwise adds reducing agent and makes it precipitate reduction, after question response is complete, wash with distilled water, filter, drying obtains the Pt-W-Sn/C catalyst.This method subject matter is to use traditional liquid phase reduction, and when the metal loading was higher, fierce Brownian movement was assembled particle easily, forms bigger particle.
Chinese patent 01118253.9 discloses a kind of method for preparing the highly active direct methyl alcohol Proton Exchange Membrane Fuel Cells of nanoscale and hydrogen/oxygen Proton Exchange Membrane Fuel Cells anode catalyst easily, the catalyst grain size of this method preparation is even, about about 4 nanometers of particle diameter, chemical property is better than commercial catalyst.But the catalyst particle size and the commercial catalyst that make of this method is bigger than normal, and uses hydrazine hydrate or formic acid to be reducing agent, and certain toxicity is arranged.
Chinese patent 01127116.7 discloses a kind of method for preparing catalyst of fuel batter with proton exchange film by solid phase reduction, this method uses polyformaldehyde, sodium formate etc. as reducing agent, make slaine and reducing agent generation solid phase reaction by grinding, with the preparation catalyst.This method is saved solvent, but compares with the traditional preparation process method, and the performance of the catalyst that this method makes there is no remarkable improvement.And hand lapping is not suitable for large-scale production, from practical application bigger distance is arranged.
European patent 0898318A2 discloses a kind of process for preparing the activated carbon loaded platinum catalyst of small particle diameter: this method is with H
2PtCl
6Be dissolved in NaHSO
3In the aqueous solution, regulating pH value again is 2, dropwise adds H
2O
2Solution, the colloidal sol of formation Pt, the pH value value of colloidal sol is adjusted to 7 with NaOH; Toward wherein adding the water that is dispersed with carbon black, both mix, and stir, and use rare H again
2SO
4Regulating pH value is 5, and mixed liquor heats 3h under boiling, so that Pt colloidal sol is all attached on the carbon; With its washing, drying obtains catalyst Pt/C, and the average grain diameter of catalyst is 1～2nm, and good performance is arranged in electro-chemical test.But this method preparation cost height, and need regulate the pH value repeatedly, technological process complexity, process are not easy control.
U.S. Patent application 20040087441 discloses the sol method of a kind of Pt/C of preparation and PtRu/C catalyst, the activity of such catalysts component particles degree that this method makes is that 0.7nm is to 10nm, for the PtRu/C system, the active component granularity can reach 0.5 to 2.5nm, and its active component distribution of particle sizes is still even inadequately.
Generally speaking, relevant supported metal catalyst preparation method reduces cost in the particle diameter controllability, simplifies production process, and aspects such as minimizing environmental pollution are still waiting to make improvement.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, provide and can efficiently quantitatively prepare, particle diameter is controlled, high dispersive and high activity, and technology is simple, and is easy to operate, the preparation method of the carbon-carried platinum-based catalyst that is used for fuel cell with low cost.
Another purpose of the present invention is to provide according to above-mentioned preparation method and makes, and high degree of dispersion, particle diameter is little, activity is high, has the good resistance poisoning performance, can be used for the carbon-carried platinum-based catalyst of RPEMFC and DMFC fuel cell.
Purpose of the present invention is achieved through the following technical solutions: the preparation method who originally is used for the carbon-carried platinum-based catalyst of fuel cell comprises the steps:
(1) the slaine presoma is joined in the organic solvent with complexing agent, alcohols reducing agent, mixed solution at room temperature stirred 10～60 minutes, the quality volumetric concentration of slaine presoma is 1～20g/L in the mixed solution, the alcohols reducing agent is 1: 5～1: 1 with the volume of organic solvent ratio, the mass ratio of slaine presoma and complexing agent is 1～10: 5～1, and the slaine presoma is H
2PtCl
66H
2O; Or H
2PtCl
66H
2O, RuCl
3Mixture, mol ratio Pt: Ru=1: 1; Or H
2PtCl
66H
2O, RuCL
3, IrCl
3Mixture, mol ratio Pt: Ru=1: 1, mol ratio Pt: Ir=2～7: 1;
(2) add alkaline matter in step (1) gained mixed solution, regulating the pH value is 8～11, and logical nitrogen protection added hot reflux 4～8 hours under normal pressure, perhaps reacted in autoclave 3～8 hours, and temperature is controlled at 120～160 ℃;
(3) add carbon carrier to step (2) gained mixed solution, mol ratio Pt: C=0.015～0.09: 1 at room temperature stirred 12～48 hours, made the metal-sol particle be dispersed on the carbon carrier uniformly;
(4) add acidic materials to step (3) gained mixed solution, regulating pH value is 1～4, adds 0～2 milliliter of redistilled water, and ultrasonic concussion 10～30 minutes is to break glue;
(5) with step (4) gained mixed solution suction filtration, filter cake is washed with water to and can not detects Cl
-Ion, dry under the vacuum, cool off, originally be used for the carbon-carried platinum-based catalyst of fuel cell after the grinding.
Described complexing agent comprises natrium citricum, sodium oxalate, disodium ethylene diamine tetraacetate, sodium tartrate.
Described alcohols reducing agent comprises ethylene glycol, propane diols, glycerine.。
Described organic solvent comprises ethylene glycol, propane diols, glycerine, or the mixed solution of a kind of and acetone of above alcohols, and volume ratio is 3: 1～1: 3.
Described alkaline matter comprises that mass concentration is 5～10% KOH or the alcohol solution of NaOH, and described alcohols comprises ethylene glycol, glycerine, propane diols.
Described acidic materials comprise that mass concentration is 5～10% H
2SO
4Perhaps HNO
3The aqueous solution.
Described carbon carrier comprises Xc-72R carbon black or CNT.
Described carbon carrier can directly add with the slaine presoma in step (1) simultaneously.
Originally the carbon-carried platinum-based catalyst that is used for fuel cell is to make according to above-mentioned preparation method, and catalyst comprises Pt/C, Pt-Ru/C, Pt-Ru-Ir/C, Pt/CNT, Pt-Ru/CNT, Pt-Ru-Ir/CNT.The decentralization of these activity of such catalysts components and the active corresponding catalyst that all makes far above conventional method, the catalyst that the active component granularity all makes far below conventional method, for the PtRuIr/CNTs catalyst, its smallest particles Du Keda 1.2nm, and particle is very even.
The present invention compared with prior art has following advantage and beneficial effect:
(1) uses alcohols or ketones solvent, add the complexing agent that to remove by washing simultaneously, adopt the alcohols high temperature reduction, can make the little high activated catalyst to 1nm of active component granularity, the active component distribution of particle sizes is extremely even, distribution is two-dimentional high degree of dispersion feature, has effectively improved the utilization rate of noble metal.
(2) add Ir etc. can significantly improve active component decentralization and catalyst as auxiliary agent antitoxin performance, thereby electro-chemical activity surface area, catalytic activity and the antitoxin performance of catalyst are significantly improved, and the combination property of PtRuIr/CNTs catalyst will exceed several times than the high-performance PtRu/C catalyst of Johnson Matthey company.
(3) adopt the high pressure organic sol method to prepare this catalyst, technology is simple, and rate of recovery height has reduced the catalyst cost.
(4) adopt gentleness, cheap and eco-friendly alcohols reducing agent has avoided reducing agent commonly used to use pollution on the environment.
Description of drawings
The transmission electron microscope photo of the Pt-Ru-Ir/CNT catalyst that Fig. 1, the 2nd, the present invention prepare;
The transmission electron microscope photo of the Pt/CNT catalyst that Fig. 3, the 4th, the present invention prepare;
The transmission electron microscope photo of the Pt/C catalyst that Fig. 5, the 6th, the present invention prepare;
Fig. 7 is the XRD spectra of the Pt-Ru-Ir/CNT catalyst for preparing of the present invention;
Fig. 8 is that several catalyst are at 0.5mol/LH
2SO
4+ 0.5mol/LCH
3Cyclic voltammetric spectrogram in the OH solution.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment one
Originally the preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell, its step comprises:
(1) with H
2PtCl
66H
2O, natrium citricum add in the mixed solution of propane diols and ethylene glycol, stir under the room temperature it fully to be dissolved in 10 minutes.H in the mixed solution
2PtCl
66H
2The quality volumetric concentration of O is 1g/L, and the volume ratio of propane diols and ethylene glycol is 1: 5, H
2PtCl
66H
2The mass ratio of O and natrium citricum is 1: 5;
(2) add the ethylene glycol solution that mass concentration is 5% KOH in step (1) gained mixed solution, regulating pH value is 8, leads to nitrogen protection and added hot reflux 4 hours under normal pressure;
(3) add the Xc-72R carbon black to step (2) gained mixed solution, the mol ratio of metal Pt and Xc-72R carbon black is Pt: C=0.015: 1, at room temperature stirred 12 hours, and the metal-sol particle is dispersed on the Xc-72R carbon black uniformly;
(4) adding mass concentration to step (3) gained mixed solution is 5% H
2SO
4The aqueous solution, regulating pH value is 4, ultrasonic concussion 10 minutes is to break glue;
(5) with step (4) gained mixed solution vacuum filtration, filter cake extremely can not detect Cl with the second distillation water washing
-Ion, and 90 ℃ of oven dry 8 hours in vacuum drying chamber, cooling originally is used for the carbon-carried platinum-based catalyst Pt/C of fuel cell after the grinding.
Embodiment two
Originally the preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell, its step comprises:
(1) with H
2PtCl
66H
2O, sodium oxalate add in the mixed solution of ethylene glycol and propane diols, stir 60 minutes H in the mixed solution under the room temperature
2PtCl
66H
2The quality volumetric concentration of O is 20g/L, and the volume ratio of ethylene glycol and propane diols is 1: 1, H
2PtCl
66H
2The mass ratio of O and sodium oxalate is 10: 1;
(2) add the propylene glycol solution that mass concentration is 10% NaOH in step (1) gained mixed solution, regulating pH value is 11, leads to nitrogen protection and added hot reflux 8 hours under normal pressure;
(3) add CNT to step (2) gained mixed solution, the mol ratio of metal Pt and CNT is Pt: C=0.015: 1, at room temperature stirred 48 hours, and make the metal-sol particle be dispersed on the CNT uniformly;
(4) adding mass concentration to step (3) gained mixed solution is 10% H
2NO
3The aqueous solution, regulating pH value is 1, adds 2 milliliters of redistilled waters, ultrasonic concussion 30 minutes is to break glue;
(5) with step (4) gained mixed solution vacuum filtration, filter cake extremely can not detect Cl with the second distillation water washing
-Ion, and 90 ℃ of oven dry 8 hours in vacuum drying chamber, cooling originally is used for the carbon-carried platinum-based catalyst Pt/CNT of fuel cell after the grinding.
Embodiment three
Originally the preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell, its step comprises:
(1) with H
2PtCl
66H
2O, sodium tartrate add in the mixed solution of ethylene glycol and glycerine, stir 30 minutes H in the mixed solution under the room temperature
2PtCl
66H
2The quality volumetric concentration of O is 15g/L, and the volume ratio of ethylene glycol and glycerine is 1: 2, H
2PtCl
66H
2The mass ratio of O and sodium tartrate is 1: 1;
(2) add the glycerine solution that mass concentration is 8% KOH in step (1) gained mixed solution, regulating pH value is 10, leads to nitrogen protection and added hot reflux 6 hours under normal pressure;
(3) add CNT to step (2) gained mixed solution, the mol ratio of metal Pt and CNT is Pt: C=0.025: 1, at room temperature stirred 24 hours, and make the metal-sol particle be dispersed on the CNT uniformly;
(4) adding mass concentration to step (3) gained mixed solution is 8% H
2NO
3The aqueous solution, regulating pH value is 3, adds 1 milliliter of redistilled water, ultrasonic concussion 20 minutes is to break glue;
(5) with step (4) gained mixed solution vacuum filtration, filter cake extremely can not detect Cl with the second distillation water washing
-Ion, and 90 ℃ of oven dry 8 hours in vacuum drying chamber, cooling originally is used for the carbon-carried platinum-based catalyst Pt/CNT of fuel cell after the grinding.
Embodiment four
The slaine presoma is H
2PtCl
66H
2O, RuCl
3Mixture, mol ratio Pt: Ru=1: 1, join the mixed solution that alcohols reducing agent ethylene glycol and organic solvent are propane diols and acetone, ethylene glycol and organic solvent (containing propane diols and acetone) volume ratio is 1: 1, propane diols and acetone volume ratio are 1: 3 in the organic solvent, the mol ratio of metal Pt and Xc-72R carbon black is Pt: C=0.025: 1, in step (1), directly add; Step (2) is to react 3 hours in autoclave, and temperature is controlled at 120 ℃.Other are operated with embodiment one, thereby make the carbon-carried platinum-based catalyst Pt-Ru/C that originally is used for fuel cell.
Embodiment five
The slaine presoma is H
2PtCl
66H
2O, RuCl
3Mixture, mol ratio Pt: Ru=1: 1, join the mixed solution that alcohols reducing agent propane diols and organic solvent are ethylene glycol and acetone, reducing agent propane diols and organic solvent (containing ethylene glycol and acetone) volume ratio is 1: 1, ethylene glycol and acetone volume ratio are 3: 1 in the organic solvent, the mol ratio of metal Pt and CNT is Pt: C=0.025: 1, in step (1), directly add; Step (2) is to react 8 hours in autoclave, and temperature is controlled at 160 ℃.Other are operated with embodiment two, thereby make the carbon-carried platinum-based catalyst Pt-Ru/CNT that originally is used for fuel cell.
Embodiment six
The slaine presoma is H
2PtCl
66H
2O, RuCl
3Mixture, mol ratio Pt: Ru=1: 1, join the mixed solution that alcohols reducing agent propane diols and organic solvent are ethylene glycol and acetone, reducing agent propane diols and organic solvent volume ratio are 1: 2, ethylene glycol and acetone volume ratio are 1: 2 in the organic solvent, CNT is a carbon carrier, and the mol ratio of metal Pt and CNT is Pt: C=0.075: 1 directly adds in step (1); Step (2) is to react 5 hours in autoclave, and temperature is controlled at 140 ℃.Other are operated with embodiment three, thereby make the carbon-carried platinum-based catalyst Pt-Ru/CNT that originally is used for fuel cell.
Embodiment seven
The slaine presoma is H
2PtCl
66H
2O, RuCl
3, IrCl
3Mixture, mol ratio Pt: Ru=1: 1, mol ratio Pt: Ir=2: 1.The Xc-72R carbon black is a carbon carrier, and the mol ratio of metal Pt and Xc-72R carbon black is Pt: C=0.03: 1.Other are operated with embodiment four, thereby make the carbon-carried platinum-based catalyst Pt-Ru-Ir/C that originally is used for fuel cell.
Embodiment eight
The slaine presoma is H
2PtCl
66H
2O, RuCl
3, IrCl
3Mixture, mol ratio Pt: Ru=1: 1, mol ratio Pt: Ir=7: 1.CNT is a carbon carrier, and the mol ratio of metal Pt and CNT is Pt: C=0.03: 1.Other are operated with embodiment five, thereby make the carbon-carried platinum-based catalyst Pt-Ru-Ir/CNT that originally is used for fuel cell.
Embodiment nine
The slaine presoma is H
2PtCl
66H
2O, RuCl
3, IrCl
3Mixture, mol ratio Pt: Ru=1: 1, mol ratio Pt: Ir=4: 1.CNT is a carbon carrier, and the mol ratio of metal Pt and CNT is Pt: C=0.09: 1.Other are operated with embodiment six, thereby make the carbon-carried platinum-based catalyst Pt-Ru-Ir/CNT that originally is used for fuel cell.
Embodiment ten
Complexing agent is a disodium ethylene diamine tetraacetate, and other are operated with embodiment one, thereby makes the carbon-carried platinum-based catalyst Pt/C that originally is used for fuel cell.
Carbon-carried platinum-based catalyst Pt/C, Pt-Ru/C, Pt-Ru-Ir/C, Pt/CNT, Pt-Ru/CNT, the Pt-Ru-Ir/CNT of the present invention's preparation.As shown in Figure 1, 2, be the transmission electron microscope photo of the Pt-Ru-Ir/CNT catalyst for preparing of the present invention; Shown in Fig. 3,4, be the transmission electron microscope photo of the Pt/CNT catalyst for preparing of the present invention; Shown in Fig. 5,6, be the transmission electron microscope photo of the Pt/C catalyst for preparing of the present invention.
Fig. 7 is the XRD spectra of Pt-Ru-Ir/CNT catalyst, and Fig. 8 is that several catalyst are at 0.5mol/LH
2SO
4+ 0.5mol/LCH
3Cyclic voltammetric spectrogram in the OH solution, wherein curve 1 is the PtRu/C catalyst of JohnsonMat they company, curve 2 is the prepared PtRuIr/C catalyst of the present invention, and curve 3 is the prepared PtRuIr/CNT catalyst of the present invention, and three kinds of activity of such catalysts ratios are 1: 1.9: 4.6.Employing XRD broadening method records the particle diameter mean value of active component Pt, and the catalyst performance data that adopts voltammetry to record sees the following form.
| Catalyst and composition thereof | Particle diameter (nm) | Surface-active area (m 2/g) | Oxidation peak point current (mA/mgPtcm 2) |
| Pt/C | 3.1 | 162.3 | 779.8 |
| Pt/CNT | 2.1 | 240.3 | 1406.27 |
| Pt-Ru/C | 2.4 | 154.8 | 1138.25 |
| Pt-Ru/CNT | 1.2 | 466.3 | 1883.2 |
| Pt-Ru-Ir/C | 1.3 | 164.2 | 1265.2 |
| Pt-Ru-Ir/CNT | 1.1 | 694.2 | 2543.99 |
As mentioned above, just can realize the present invention preferably.
Claims (7)
1, the preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell is characterized in that comprising the steps:
(1) the slaine presoma is joined in the organic solvent with complexing agent, alcohols reducing agent, mixed solution at room temperature stirred 10～60 minutes, the quality volumetric concentration of slaine presoma is 1～20g/L in the mixed solution, the alcohols reducing agent is 1: 5～1: 1 with the volume of organic solvent ratio, the mass ratio of slaine presoma and complexing agent is 1～10: 5～1, and the slaine presoma is H
2PtCl
66H
2O, or H
2PtCl
66H
2O, RuCl
3Mixture, mol ratio Pt: Ru=1: 1, or H
2PtCl
66H
2O, RuCl
3, IrCl
3Mixture, mol ratio Pt: Ru=1: 1, mol ratio Pt: Ir=2～7: 1;
(2) add alkaline matter in step (1) gained mixed solution, regulating the pH value is 8～11, and logical nitrogen protection added hot reflux 4～8 hours under normal pressure, perhaps reacted in autoclave 3～8 hours, and temperature is controlled at 120～160 ℃;
(3) add carbon carrier to step (2) gained mixed solution, mol ratio Pt: C=0.015～0.09: 1 at room temperature stirred 12～48 hours, made the metal-sol particle be dispersed on the carbon carrier uniformly;
(4) add acidic materials to step (3) gained mixed solution, regulating pH value is 1～4, adds 0～2 milliliter of redistilled water, and ultrasonic concussion 10～30 minutes is to break glue;
(5) with step (4) gained mixed solution suction filtration, filter cake is washed with water to and can not detects Cl
-Ion, dry under the vacuum, cool off, originally be used for the carbon-carried platinum-based catalyst of fuel cell after the grinding.
2, by the described preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell of claim 1, it is characterized in that: described complexing agent comprises natrium citricum, sodium oxalate, disodium ethylene diamine tetraacetate, sodium tartrate, described alcohols reducing agent comprises ethylene glycol, propane diols, glycerine, described organic solvent comprises ethylene glycol, propane diols, glycerine, or the mixed solution of a kind of and acetone of above alcohols, volume ratio is 3: 1～1: 3.
3, by the described preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell of claim 1, it is characterized in that: described alkaline matter comprises that mass concentration is 5～10% KOH or the alcohol solution of NaOH, and described alcohols comprises ethylene glycol, glycerine, propane diols.
4, by the described preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell of claim 1, it is characterized in that: described acidic materials comprise that mass concentration is 5～10% H
2SO
4Perhaps HNO
3The aqueous solution.
5, by the described preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell of claim 1, it is characterized in that: described carbon carrier comprises Xc-72R carbon black or CNT.
6, by the described preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell of claim 1, it is characterized in that: described carbon carrier can directly add with the slaine presoma in step (1) simultaneously.
7, the carbon-carried platinum-based catalyst that is used for fuel cell, it is characterized in that: the described preparation method who is used for the carbon-carried platinum-based catalyst of fuel cell makes according to claim 1, comprises Pt/C, Pt-Ru/C, Pt-Ru-Ir/C, Pt/CNT, Pt-Ru/CNT, Pt-Ru-Ir/CNT.
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2005
- 2005-12-19 CN CNB200510102382XA patent/CN100488633C/en not_active Expired - Fee Related
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