CN101252191A - Processing method of proton exchanging film fuel battery metal double polar plate - Google Patents
Processing method of proton exchanging film fuel battery metal double polar plate Download PDFInfo
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- CN101252191A CN101252191A CNA2007102035024A CN200710203502A CN101252191A CN 101252191 A CN101252191 A CN 101252191A CN A2007102035024 A CNA2007102035024 A CN A2007102035024A CN 200710203502 A CN200710203502 A CN 200710203502A CN 101252191 A CN101252191 A CN 101252191A
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- fuel cell
- proton exchange
- exchange membrane
- treatment method
- polar plates
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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
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Abstract
The invention discloses a treatment method for a metal bipolar plate of a proton exchange membrane fuel cell which relates to a metal bipolar plate technology of the proton exchange membrane fuel cell, particularly to a metal bipolar plate for the proton exchange membrane fuel cell with a modified composite material surface and a preparation method for the same. The invention provides a surface treatment method for the metal bipolar plate of the proton exchange membrane fuel cell, can improve the corrosion resistance and conductivity of the metal bipolar plate and has the advantages of low cost and simple method, etc.
Description
Technical field
The present invention relates to the metal bipolar plate technique of Proton Exchange Membrane Fuel Cells, be specifically related to a kind of used in proton exchange membrane fuel cell metal double polar plates preparation method.
Background technology
Fuel cell (Fuel Cell) is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) that is converted into electric energy by chemical energy, have advantages such as high power density, high-energy conversion efficiency, environmental friendliness, peace and quiet, reliability height, fuel cell technology is subjected to the generally attention of countries in the world government.
In numerous fuel cell classifications, (Proton Exchange Membrane Fuel Cell PEMFC) is the latest generation fuel cell technology to Proton Exchange Membrane Fuel Cells.Owing to adopted the solid electrolyte polymeric membrane as electrolyte, therefore have characteristics such as room temperature starts fast, no electrolyte leakage, life-span length, also therefore be acknowledged as most promising desirable alternative energy source
Bipolar plates is one of key component in the Proton Exchange Membrane Fuel Cells, and its weight and volume has accounted for the exhausted vast scale of whole fuel cell.Bipolar plates has distribution and separates effects such as reacting gas, collection and transmission current, and its manufacturing materials and processing charges also are the high one of the main reasons of PEMFC cost.Therefore, commercialization has very important influence to PEMFC in the development of bipolar plate material and manufacture craft thereof.
At present, application has graphite bi-polar plate, carbon composite bipolar plates, metal double polar plates etc. more widely.Graphite material is the bipolar plate material of development and utilization early, and present manufacturing technology is comparative maturity.Graphite bi-polar plate light weight, corrosion resistance and good, conductivity are stronger, but because graphitic embrittlement is big, and thickness is bigger, lacks mechanical strength, and it is long to cause processing the flow field time, and cost is too high, can't satisfy the large-scale production of PEMFC commercialization requirement.The carbon composite bipolar plates has certain improvement to the rerum natura of graphite bi-polar plate, and reduced cost to a certain extent, but its processing technology is very complicated, and metal double polar plates not only is easy to realize producing in batches, reducing the pile cost, has the favorable conductive thermal conductivity, and can increase substantially the pile specific power, thereby be considered to the bipolar plate material in competitive future.
Early the metal double polar plates that uses is gold-plated titanium plate and niobium plate mostly, and along with development of technology and requirement cheaply, the Research on kinds of sheet metal bipolar plates is tending towards variation.Material commonly used mainly contains stainless steel, titanium, nickel, aluminium and aluminium alloy etc.But inevitably metal double polar plates works long hours in the environment of this apparent acidity of PEMFC, can corrode, and produce polyvalent metal ion, and then cause thickening of oxygen electrode side metal oxide, increases contact resistance, contaminated electrode, reduction battery performance.Simultaneously, in the hydrogen electrode side slight corrosion can take place, and the activity of electrode catalyst is reduced, film resistance increases, so the surface treatment method of metal double polar plates just becomes one of the key technology in this field.
Summary of the invention:
The invention provides the surface treatment method of a metal double-plate for proton exchange film fuel cell, this method can improve the corrosion resistance and the conductivity of metal double polar plates, and has advantages such as cost is low, method is simple.
The object of the present invention is to provide the surface treatment method of a metal double-plate for proton exchange film fuel cell, metal double polar plates is made of matrix and surface conductance anti-corrosion coating thereof, and matrix can 304 stainless steels, 316 stainless steels, titanium, nickel, aluminium and aluminium alloy etc.Face coat is a kind of composite material of carbon/polyaniline, and wherein material with carbon element can be carbon black, carbon dust, acetylene black, carbon fiber or its mixture, and coating layer thickness is 10～50 μ m.
The preparation method adopts the chemical synthesis coating process.Step is as follows:
At first aniline monomer is dissolved in the acid (can be hydrochloric acid, nitric acid, sulfuric acid or phosphoric acid etc.), with solvent and quality is that the material with carbon element of aniline 5%～20% mixes, in the mixed solution of this aniline monomer and material with carbon element, add oxidant then, make the carbon/polyaniline composite material of conduction, above-mentioned material is dissolved in the N-methyl pyrrolidone solution of 10～50g/L, directly be coated on the metal double polar plates matrix surface of handling, soaked 1～5 hour in 0.1-0.3mol/L diluted acid (can be hydrochloric acid, nitric acid, sulfuric acid) then, low-temperature vacuum drying obtains.
Wherein solvent can be aliphatic solvent, alicyclic solvents and aromatic solvent etc., preferred chloroform, trichloroethanes, alcohols, ethers or toluene.Oxidant can be ammonium persulfate, manganese dioxide, hydrogen peroxide, potassium bichromate, potassium permanganate and composition thereof.The mass ratio of oxidant and aniline is 0.61: 1.
Beneficial effect
Compared with prior art, the invention provides the surface treatment method of a metal double-plate for proton exchange film fuel cell, this conductive polymer composite coating can improve the corrosion resistance and the conductivity of metal, and has advantages such as cost is low, method is simple.
Embodiment
Following examples can further specify implementation method of the present invention.
Embodiment 1
Carbon black/polyaniline composite material modified metal bipolar plates.
Preparation process is as follows: at first 10mL is slowly joined through distillation and the aniline of purifying in the hydrochloric acid of 1mol/L of 600mL, the 400mL chloroform is mixed with described solution, after adding the 1g carbon black again, in ice-water bath, constantly stir, until even dispersion, the hydrochloric acid solution that slowly drips ammonium persulfate then (contains 6g (NH
4)
2S
2O
8The HCl of 200mL 1mol/L), polymerization reaction take place generates precipitation, obtain carbon black/polyaniline composite material through cleaning and filtration, at last carbon black/polyaniline composite material is dissolved in the N-methyl pyrrolidone solution of 10g/L, after mixing, be coated on the metal double polar plates surface, behind 0.1mol/L salt acid soak 2h, 50 ℃ of following vacuum dryings obtain.
Embodiment 2
Carbon dust/polyaniline composite material modified metal bipolar plates.
Preparation process is as follows: at first 10mL is slowly joined through distillation and the aniline of purifying in the hydrochloric acid of 1mol/L of 600mL, the 400mL trichloroethanes is mixed with described solution, after adding the 0.5g carbon dust again, in ice-water bath, constantly stir, until even dispersion, the hydrochloric acid solution that slowly drips ammonium persulfate then (contains 6g (NH
4)
2S
2O
8The HCl of 200mL 1mol/L), polymerization reaction take place generates precipitation, obtain carbon dust/polyaniline composite material through cleaning and filtration, at last carbon dust/polyaniline composite material is dissolved in the N-methyl pyrrolidone solution of 20g/L, after mixing, be coated on the metal double polar plates surface, behind 0.1mol/L salt acid soak 5h, 50 ℃ of following vacuum dryings obtain.
Embodiment 3
Acetylene black/polyaniline composite material modified metal bipolar plates.
Preparation process is as follows: at first 10mL is slowly joined through distillation and the aniline of purifying in the hydrochloric acid of 1mol/L of 600mL, 400mL toluene is mixed with described solution, after adding 1g acetylene black and 0.5g carbon dust again, in ice-water bath, constantly stir, until even dispersion, slowly drip the 10mL hydrogen peroxide then, polymerization reaction take place generates precipitation, obtain graphite powder/polyaniline composite material through cleaning and filtration, at last graphite powder/polyaniline composite material is dissolved in the N-methyl pyrrolidone solution of 50g/L, after mixing, is coated on the metal double polar plates surface, behind 0.1mol/L salt acid soak 1h, 50 ℃ of following vacuum dryings obtain.
Embodiment 4
Acetylene black/polyaniline composite material modified metal bipolar plates.
Preparation process is as follows: at first 10mL is slowly joined through distillation and the aniline of purifying in the hydrochloric acid of 1mol/L of 600mL, the 400mL chloroform is mixed with described solution, after adding 2g acetylene black again, in ice-water bath, constantly stir, until even dispersion, slowly drip 10g manganese dioxide then, polymerization reaction take place generates precipitation, obtain acetylene black/polyaniline composite material through cleaning and filtration, at last acetylene black/polyaniline composite material is dissolved in the N-methyl pyrrolidone solution of 20g/L, after mixing, is coated on the metal double polar plates surface, behind 0.3mol/L salt acid soak 2h, 50 ℃ of following vacuum dryings obtain.
Embodiment 5
Carbon nano-tube/poly aniline composite modification metal double polar plates.
Preparation process is as follows: at first 10mL is slowly joined through distillation and the aniline of purifying in the hydrochloric acid of 1mol/L of 600mL, the 400mL chloroform is mixed with described solution, after adding the 2g carbon fiber again, in ice-water bath, constantly stir, until even dispersion, the hydrochloric acid solution that slowly drips ammonium persulfate then (contains 6g (NH
4)
2S
2O
8The HCl of 200mL 1mol/L), polymerization reaction take place generates precipitation, obtain carbon nano-tube/poly aniline composite material through cleaning and filtration, carbon nano-tube/poly aniline composite material is dissolved in the N-of 20g/L methyl pyrrolidone solution at last, after mixing, be coated on the metal double polar plates surface, behind 0.1mol/L salt acid soak 2h, 50 ℃ of following vacuum dryings obtain.
Embodiment 6
Carbon fiber/polyaniline composite material modified metal bipolar plates.
Preparation process is as follows: at first 10mL is slowly joined through distillation and the aniline of purifying in the hydrochloric acid of 1mol/L of 600mL, the 400mL chloroform is mixed with described solution, after adding the 2g carbon fiber again, in ice-water bath, constantly stir, until even dispersion, the hydrochloric acid solution that slowly drips ammonium persulfate then (contains 6g (NH
4)
2S
2O
8The HCl of 200mL 1mol/L), polymerization reaction take place generates precipitation, obtain carbon fiber/polyaniline composite material through cleaning and filtration, at last carbon fiber/polyaniline composite material is dissolved in the N-methyl pyrrolidone solution of 20g/L, after mixing, be coated on the metal double polar plates surface, behind 0.1mol/L salt acid soak 2h, 50 ℃ of following vacuum dryings obtain.
Claims (6)
1. the surface treatment method of a metal double-plate for proton exchange film fuel cell, it is characterized in that, processing method is: aniline monomer is dissolved in the acid, with solvent and quality is that the material with carbon element of aniline 5%～20% mixes, in above-mentioned mixed solution, add oxidant and make carbon/polyaniline composite material, above-mentioned material is dissolved in the N-methyl pyrrolidone solution of 10～50g/L, be coated in the metal double polar plates surface, diluted acid soaked 1～5 hour, low-temperature vacuum drying.
2. according to the surface treatment method of the described dual polar plates of proton exchange membrane fuel cell of claim 1, it is characterized in that described material with carbon element is carbon black, carbon dust, acetylene black, carbon fiber or its mixture.
3. according to the surface treatment method of the described dual polar plates of proton exchange membrane fuel cell of claim 1, it is characterized in that described solvent is aliphatic solvent, alicyclic solvents or aromatic solvent.
4. according to the surface treatment method of claim 1 or 3 described dual polar plates of proton exchange membrane fuel cell, it is characterized in that described solvent is chloroform, trichloroethanes, alcohols, ethers or toluene.
5. according to the surface treatment method of the described dual polar plates of proton exchange membrane fuel cell of claim 1, it is characterized in that described oxidant is ammonium persulfate, manganese dioxide, hydrogen peroxide, potassium bichromate, potassium permanganate or its mixture.
6. according to the surface treatment method of the described dual polar plates of proton exchange membrane fuel cell of claim 1, the mass ratio that it is characterized in that described oxidant and aniline is 0.6-1: 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102035024A CN101252191A (en) | 2007-12-28 | 2007-12-28 | Processing method of proton exchanging film fuel battery metal double polar plate |
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| CNA2007102035024A CN101252191A (en) | 2007-12-28 | 2007-12-28 | Processing method of proton exchanging film fuel battery metal double polar plate |
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| CN101252191A true CN101252191A (en) | 2008-08-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569842A (en) * | 2012-01-13 | 2012-07-11 | 南京航空航天大学 | Preparation method of hybrid ordered mesoporous carbon coat for protecting stainless steel bipolar plate of proton exchange membrane fuel cell |
| CN102978617A (en) * | 2012-01-13 | 2013-03-20 | 南京航空航天大学 | Preparation method of ordered mesoporous carbon-tungsten coating for proton exchange membrane fuel cell stainless steel bipolar plate protection |
| CN105552399A (en) * | 2015-12-15 | 2016-05-04 | 湖北大学 | Graphene-doping conductive polymer modified metal bipolar plate of proton exchange membrane fuel cell and preparation method of metal bipolar plate |
| CN108666595A (en) * | 2018-05-18 | 2018-10-16 | 深圳市晶特智造科技有限公司 | A kind of graphite bi-polar plate surface texture optimization method |
| CN110690473A (en) * | 2019-11-14 | 2020-01-14 | 上海电气集团股份有限公司 | Preparation method of carbon nanotube array-conductive polymer coating of metal bipolar plate |
-
2007
- 2007-12-28 CN CNA2007102035024A patent/CN101252191A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569842A (en) * | 2012-01-13 | 2012-07-11 | 南京航空航天大学 | Preparation method of hybrid ordered mesoporous carbon coat for protecting stainless steel bipolar plate of proton exchange membrane fuel cell |
| CN102978617A (en) * | 2012-01-13 | 2013-03-20 | 南京航空航天大学 | Preparation method of ordered mesoporous carbon-tungsten coating for proton exchange membrane fuel cell stainless steel bipolar plate protection |
| CN102569842B (en) * | 2012-01-13 | 2014-10-15 | 南京航空航天大学 | Preparation method of hybrid ordered mesoporous carbon coat for protecting stainless steel bipolar plate of proton exchange membrane fuel cell |
| CN102978617B (en) * | 2012-01-13 | 2014-11-05 | 南京航空航天大学 | Preparation method of ordered mesoporous carbon-tungsten coating for proton exchange membrane fuel cell stainless steel bipolar plate protection |
| CN105552399A (en) * | 2015-12-15 | 2016-05-04 | 湖北大学 | Graphene-doping conductive polymer modified metal bipolar plate of proton exchange membrane fuel cell and preparation method of metal bipolar plate |
| CN105552399B (en) * | 2015-12-15 | 2018-06-26 | 湖北大学 | A kind of graphene adulterates conducting polymer modified dual polar plates of proton exchange membrane fuel cell and preparation method thereof |
| CN108666595A (en) * | 2018-05-18 | 2018-10-16 | 深圳市晶特智造科技有限公司 | A kind of graphite bi-polar plate surface texture optimization method |
| CN110690473A (en) * | 2019-11-14 | 2020-01-14 | 上海电气集团股份有限公司 | Preparation method of carbon nanotube array-conductive polymer coating of metal bipolar plate |
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Open date: 20080827 |