CN100435396C - Method for preparing bipolar plate with catalytication - Google Patents
Method for preparing bipolar plate with catalytication Download PDFInfo
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- CN100435396C CN100435396C CNB2007100144563A CN200710014456A CN100435396C CN 100435396 C CN100435396 C CN 100435396C CN B2007100144563 A CNB2007100144563 A CN B2007100144563A CN 200710014456 A CN200710014456 A CN 200710014456A CN 100435396 C CN100435396 C CN 100435396C
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- platinum
- nickel
- bipolar plates
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- catalyst
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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
This invention relates to a method for preparing aluminum alloy double pole plate with catalytic function for proton exchange membrane fuel cell, that is as follows: take aluminum alloy as the substrate material, use computer carving method for preparation of flow field, carries on superficial modification processing to aluminum alloy through electric deposition of nickel, electric deposition of platinum and combine nickel to form platinum alloy catalyst with the nickel. Advantages: the double pole plate and the catalyst are organically united together to one body, the double pole plate has catalytic effect, reduced battery modules and contact resistance and the enhanced electric contact reliability.
Description
Technical field
The invention belongs to the new energy materials field, particularly relate to a kind of preparation method with used in proton exchange membrane fuel cell aluminium alloy bipolar plates of catalytic action.
Background technology
Proton Exchange Membrane Fuel Cells owing to have working temperature low, start fast, no burn into and be not afraid of the research and development focus that outstanding advantage such as the easy adjustment of vibrations, energy density height and power output becomes fuel cell, the costing an arm and a leg of bipolar plates, catalyst and proton exchange membrane three big parts limited Proton Exchange Membrane Fuel Cells and applied.At present, bipolar plates adopts materials such as carbon plate, graphite-resin, stainless steel, mainly considers electric conductivity and mechanical strength, does not have catalytic performance.Consider from factors such as conductance, mechanical strength and density, aluminium alloy can be as the bipolar plate material of Proton Exchange Membrane Fuel Cells, shortcoming is that aluminium alloy is very easy to oxidation, cause contact resistance to increase, adopt electronickelling that aluminium alloy is carried out surface treatment and can prevent oxidation and improve electricity connecing performance.The optimal eelctro-catalyst of Proton Exchange Membrane Fuel Cells is a platinum, but the platinum scarcity of resources, cost an arm and a leg and utilance low, be that the utilance of platinum has only about 10% in the platinum particles of 12nm as particle diameter.The technology such as platinum, platinum alloyization and ultramicronising of carrying by carbon can improve the utilance of platinum, utilize sol method, ion-exchange and platinum salt directly method such as reduction can on carbon carrier, obtain the nanoscale platinum catalyst, but nanoscale platinum is very easy to take place to reunite and change is greatly gradually in the use; In the platinum base alloy of conventional alloys method preparation, the content of platinum is 20～60%, and the optimum efficiency of platinum is about 1g platinum/kW power.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and a kind of preparation method with catalytic action aluminium alloy bipolar plates is provided.
The present invention realizes in the following manner:
A kind of preparation method with catalytic action bipolar plates, with the aluminium alloy is the basis material of bipolar plates, adopts the computer carving method to prepare the flow field, it is characterized in that by electric deposition nickel aluminium alloy being carried out surface modification treatment, platinum electrodeposition also forms platinum alloy catalyst with nickel, specifically may further comprise the steps:
1. will process flow field and pretreated alloy matrix aluminum material electric deposition nickel in nickeliferous solion; Solution composition and technological parameter are: seven water nickelous sulfates, 150～200g/L, and sodium chloride 8～15g/L, boric acid 25～35g/L, epsom salt 25～35g/L, pH=3.0～4.0, temperature is 10～35 ℃, cathode-current density 0.05～2.0A/dm
2
2. with the alloy matrix aluminum material behind the electric deposition nickel, by supplementary meanss such as microwave irradiation and supersonic oscillations platinum electrodeposition in platiniferous solution; Solution composition and technological parameter: in the platinum salt content 7～10g/L of platinum, sulfamic acid 25～80g/L, Amcide Ammate 5～25g/L, pH=1.0～3.0,40～50 ℃ of temperature, cathode-current density 0.5～1.5A/cm
2
The aluminium alloy bipolar plate runner width and the degree of depth by this method preparation are 0.5～1.5mm, and nickel layer thickness is 30～50 μ m, and the platinum alloy catalyst granularity is 1～5nm; The corrosion resistance of this bipolar plates is better than 316 stainless steels, and is suitable with pure nickel; The specific insulation of the thick bipolar plates of 3mm is 4.9～5.0 μ Ω .cm, is 1/20～1/15 of half of pure nickel, 316 stainless 1/10～1/7, graphite cake; Bipolar plates and platinum catalyst organically are combined as a whole, and make bipolar plates have catalytic action, reduce battery component simultaneously, have reduced contact resistance, have improved electrical contact reliability.
Embodiment
Provide three most preferred embodiments of the present invention below:
Embodiment 1
With 3mm thick aluminium alloy is basis material, adopts the computer carving method to prepare the flow field, and the width of flow path and the degree of depth are 0.5mm; Oil removing and acid-wash activation preliminary treatment make its no oil in surface and No oxided film; Adopt electric deposition nickel that aluminum alloy surface is carried out modification and handle electric deposition nickel solution composition and technological parameter: seven water nickelous sulfate 150g/L, sodium chloride 8g/L, boric acid 25g/L, epsom salt 25g/L, pH=4.0, temperature is 35 ℃, cathode-current density 0.05A/dm
2Platinum electrodeposition and nickel form alloy catalyst, obtain having the aluminium alloy bipolar plates of catalytic action, platinum electrodeposition solution composition and technological parameter: in the platinum salt content 7g/L of platinum, sulfamic acid 25g/L, Amcide Ammate 5g/L, pH=3.0,50 ℃ of temperature, cathode-current density 1.5A/cm
2Bipolar plate technology parameter: width of flow path and degree of depth 0.5mm, nickel layer thickness 30 μ m, the granularity 1nm of platinum alloy, the specific insulation 4.9 μ Ω .cm of the thick bipolar plates of 3mm.
Embodiment 2
Electric deposition nickel solution composition and technological parameter: seven water nickelous sulfate 200g/L, sodium chloride 15g/L, boric acid 35g/L, epsom salt 35g/L, pH=3.0, temperature is 10 ℃, cathode-current density 2.0A/dm
2Platinum electrodeposition solution composition and technological parameter: in the platinum salt content 10g/L of platinum, sulfamic acid 80g/L, Amcide Ammate 25g/L, pH=4.0,40 ℃ of temperature, cathode-current density 1.5A/cm
2The bipolar plate technology parameter: the width of flow path and the degree of depth are 1.5mm, and nickel layer thickness is 50 μ m, and the granularity of platinum alloy is 5nm, and the specific insulation of the thick bipolar plates of 3mm is 5.0 μ Ω .cm; Other is with embodiment 1.
Embodiment 3
Electric deposition nickel solution composition and technological parameter: seven water nickelous sulfate 180g/L, sodium chloride 10g/L, boric acid 30g/L, epsom salt 30g/L, pH=3.5, temperature is 20 ℃, cathode-current density 1.0A/dm
2Platinum electrodeposition solution composition and technological parameter: in the platinum salt content 8g/L of platinum, sulfamic acid 50g/L, Amcide Ammate 20g/L, pH=1.5,45 ℃ of temperature, cathode-current density 1.0A/cm
2The bipolar plate technology parameter: the width of flow path and the degree of depth are 1.0mm, and nickel layer thickness is 40 μ m, and the granularity of platinum alloy is 2nm, and the specific insulation of the thick bipolar plates of 3mm is 4.95～5.0 μ Ω .cm; Other is with embodiment 1.
Claims (1)
1. preparation method with catalytic action bipolar plates, with the aluminium alloy is the basis material of bipolar plates, adopt the computer carving method to prepare the flow field, it is characterized in that aluminium alloy being carried out surface modification treatment by electric deposition nickel, platinum electrodeposition also forms platinum alloy catalyst with nickel, bipolar plates and catalyst organically are combined as a whole, make bipolar plates have catalytic action; Specifically may further comprise the steps:
(1) will process the flow field and pretreated alloy matrix aluminum material electro-deposition thickness in nickeliferous solion is the nickel of 30～50 μ m; Solution composition and technological parameter are: seven water nickelous sulfates, 150～200g/L, and sodium chloride 8～15g/L, boric acid 25～35g/L, epsom salt 25～35g/L, pH=3.0～4.0, temperature is 10～35 ℃, cathode-current density 0.05～2.0A/dm
2
(2) with the alloy matrix aluminum material behind the electric deposition nickel, electro-deposition granularity in platiniferous solution is 1～5nm platinum by microwave irradiation and supersonic oscillations supplementary means; Solution composition and technological parameter are: in the platinum salt content 7～10g/L of platinum, sulfamic acid 25～80g/L, Amcide Ammate 5～25g/L, pH=1.0～3.0,40～50 ℃ of temperature, cathode-current density 0.5～1.5A/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100144563A CN100435396C (en) | 2007-05-23 | 2007-05-23 | Method for preparing bipolar plate with catalytication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100144563A CN100435396C (en) | 2007-05-23 | 2007-05-23 | Method for preparing bipolar plate with catalytication |
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| CN101071870A CN101071870A (en) | 2007-11-14 |
| CN100435396C true CN100435396C (en) | 2008-11-19 |
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| CNB2007100144563A Expired - Fee Related CN100435396C (en) | 2007-05-23 | 2007-05-23 | Method for preparing bipolar plate with catalytication |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001338653A (en) * | 2000-05-30 | 2001-12-07 | Riken Corp | Separator for fuel cell |
| JP2003123782A (en) * | 2001-10-17 | 2003-04-25 | Showa Denko Kk | Separator for fuel cell, its manufacturing method, and fuel cell |
| JP2003187817A (en) * | 2001-12-17 | 2003-07-04 | Riken Corp | Separator for fuel cell |
| JP2004095440A (en) * | 2002-09-02 | 2004-03-25 | Daido Steel Co Ltd | Metal member for fuel cell, its manufacturing method, and fuel cell |
-
2007
- 2007-05-23 CN CNB2007100144563A patent/CN100435396C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001338653A (en) * | 2000-05-30 | 2001-12-07 | Riken Corp | Separator for fuel cell |
| JP2003123782A (en) * | 2001-10-17 | 2003-04-25 | Showa Denko Kk | Separator for fuel cell, its manufacturing method, and fuel cell |
| JP2003187817A (en) * | 2001-12-17 | 2003-07-04 | Riken Corp | Separator for fuel cell |
| JP2004095440A (en) * | 2002-09-02 | 2004-03-25 | Daido Steel Co Ltd | Metal member for fuel cell, its manufacturing method, and fuel cell |
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|---|---|
| CN101071870A (en) | 2007-11-14 |
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Granted publication date: 20081119 Termination date: 20110523 |