CN101055927A - Making method of the improved fuel battery dual-pole board of the light metal surface - Google Patents
Making method of the improved fuel battery dual-pole board of the light metal surface Download PDFInfo
- Publication number
- CN101055927A CN101055927A CNA2007100513036A CN200710051303A CN101055927A CN 101055927 A CN101055927 A CN 101055927A CN A2007100513036 A CNA2007100513036 A CN A2007100513036A CN 200710051303 A CN200710051303 A CN 200710051303A CN 101055927 A CN101055927 A CN 101055927A
- Authority
- CN
- China
- Prior art keywords
- board
- fuel cell
- light metal
- ambipolar
- metal surface
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Fuel Cell (AREA)
Abstract
The invention relates to a preparation method of metal base fuel cell ambipolar board. The preparation method of light metal surface modified fuel cell ambipolar board is characterized in that it comprises the steps as follows: 1) taking a titanium board of 0.15-0.60mm as the substrate to cut into a designated dimension; 2) putting it the mould, and preparing a outflow field structure by using the stamping or mold pressing technology; 3) puting the titanium board with the outflow field structure into a ultrasonic cleaning machine for washing, to wipe off the impurity on the surface; 4) using a nitriding technology to carry out a modified process on the titanium board with the outflow field structure after cleaning, to get a light metal surface modified fuel cell ambipolar board. The advantage of the invention lies in its simple technology and suitable for mass production; it has a high quality membrane, strongly combined with the substrate. The acquired light metal surface modified fuel cell ambipolar board has both good corrosion resistance and conductivity.
Description
Technical field
The present invention relates to a kind of preparation method of metal base fuel battery bipolar plate.
Background technology
Proton membrane fuel battery has characteristics such as cleaning, efficient, removable, operating condition gentleness, has important use in fields such as communications and transportation, Aero-Space and telecommunications and is worth.Bipolar plates is the plate material that monocell is together in series, and need satisfy many-sided performance requirement.Be good electrical conductivity, superior corrosion resistance (comprising sour corrosion, oxidation cargo sweat, electrode potential corrosion), good air-tightness, enough mechanical strengths, lower density and cheap relatively cost.
The bipolar plate material that uses at present is graphite, and this is mainly based on graphite good electrical conductivity and corrosion resistance, non-oxidizability etc.But owing to relatively poor, the runner machine work difficulty of graphite mechanical performance, need to solve problem such as medium osmosis with complicated technological measure, therefore the processing price of graphite bi-polar plate is very high, account for the 40-60% of fuel cell cost, become problem anxious to be solved in the fuel cell research and development.
The main starting point of utilizing metal material to prepare bipolar plates is: metal material has good plasticity, therefore directly punch forming of flow field also is expected to cut down finished cost significantly, and metal can be rolled into the sheet material of 0.1-0.2mm simultaneously, be expected to obtain high-specific-power, to greatest extent compression volume.The metal material electrical and thermal conductivity is good in addition, and air-tightness is good, the mechanical strength height.But the weakness that metal material is the most fatal is a corrosion-resistant, and the corrosion resistance that how to improve metal material is at first to need the problem that solves.
Different metal materials, the method difference of solution corrosion resistance.Studying maximum is ferrous alloy, and this mainly is because iron is cheap.But the surface contacted resistance of iron is big, and iron ion causes battery performance and life-span to descend to the pollution of battery liquid simultaneously.Thereby the ferrous metals plate carried out the key that surface treatment is its extensive use.It is unsatisfactory that multidigit researcher studies the result of fe-based surface depositing TiN, finds that the TiN coating easily comes off from matrix surface, and the life-span in fuel cell is very short, and it is bad that this mainly is that TiN combines with iron-based, exists due to the pin hole in the while TiN film.U.S. Oak Ridge national laboratories research 1100 ℃ of nitridings of (Ni-50Cr) alloy, form CrN and Cr on the surface
2N gradient film has been eliminated the pin hole influence, and corrosion resistance significantly improves, and operation did not produce and pollutes in 1000 hours in the fuel cell.But, do not possess commercial value because the base material price is expensive.Their stainless steel of using high Ni, Cr content instead carries out nitriding and handles subsequently, though stainless steel surfaces has also formed Cr
2N, but film is discontinuous, is difficult to satisfy the corrosion resistant requirement of fuel cell.Taiwan Yuan Ze university utilize PVD at the Al surface deposition multilayer films such as TiN, TiCN, contact resistance significantly reduces, corrosion resistance also effectively improves.But the battery operation experiment shows, only can move 200 hours.Britain Hodgson in the titanium surface preparation FC5 coating, contact resistance is near 10m Ω .cm
2, the battery operation life-span reaches 8000 hours.But the FC5 coating technology is very secret, can look into without any data at present.All also do not obtain commercial the application so far in the whole bag of tricks of being attempted.
Summary of the invention
The purpose of this invention is to provide a kind of preparation method who has the light metal surface modified fuel cell ambipolar board of good corrosion resistance and conductivity concurrently.
For achieving the above object, the technical solution adopted in the present invention is: the preparation method of light metal surface modified fuel cell ambipolar board is characterized in that it comprises the steps: 1) be matrix with the titanium plate of 0.15-0.6mm, be cut into specified size; 2) put into mould, adopt punching press or mould pressing technology, prepare flow field structure; 3) the titanium plate that will have a flow field structure is put into the ultrasonic cleaning machine and is cleaned, and removes surface impurity; 3) utilize nitridation technique that modification is carried out on the titanium plate surface that has flow field structure after cleaning and handle, obtain light metal surface modified fuel cell ambipolar board.
Describedly utilize nitridation technique that modification is carried out on the titanium plate surface that has flow field structure after cleaning to be treated to: average 3～5 ℃/min of heating rate, 650-850 ℃ of ionic nitriding temperature, temperature retention time 30-60 minute, nitrogen pressure 60-150Pa, gas flow 80-120mL/min, voltage 0.5-0.7KV, electric current 10-50A.
Though, the glow discharge nitriding of 0.1～0.6mm titanium plate is not appeared in the newspapers at the glow discharge nitriding technology of titanium alloy parts comparative maturity.Because the control of required TiN infiltration layer is very crucial, if infiltration layer is dark excessively, the titanium slab integral becomes fragile, infiltration layer is shallow excessively, though titanium plate pliability is better, if there is pinprick in infiltration layer or does not reach certain thickness, corrosion resistance can't meet the demands again, therefore have best infiltration layer, its control technology is different with traditional nitriding.Tradition nitriding heating rate is very fast, this nitridation process segmentation control, and heating rate is slower, but temperature retention time is shorter.
It is parent metal that the present invention selects the titanium plate of 0.1-0.6mm, by the flow field of pressure forming acquisition design, by the fine and close TiN film of nitridation technique at titanium plate surface formation gradient transition, has both guaranteed corrosion resistance, satisfies the requirement of conductivity again.The technical advantage of titanium base nitriding is: (1) film combines with the matrix gradient, the film difficult drop-off; (2) film surface free of pinholes, densification are similar with the effect of Ni-50Cr nitriding, effectively corrosion-resistant.
The invention has the beneficial effects as follows: technology is simple, can obtain surface-treated titanium plate in batches, infiltration layer densification, difficult drop-off; Bipolar plates after nitriding is handled not only has excellent corrosion resistance, and has good mechanical performance and conductivity; The light metal surface modified fuel cell ambipolar board that obtains has good corrosion resistance and conductivity concurrently.
Description of drawings
Fig. 1 is preparation technology's flow chart of the present invention
Fig. 2 is the section micro-analysis figure of the embodiment of the invention 2
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
As shown in Figure 1, get the thick titanium plate of 0.15mm, cutting out is 100 * 200 sheet material, adopts conventional punching press or mould pressing technology, prepares flow field structure, puts into the ultrasonic cleaning machine and cleans 3 minutes; Put into ion nitriding furnace subsequently and carry out the nitriding processing, adopt pure nitrogen gas, 3 ℃/min of heating rate, nitrogen pressure are 150Pa, gas flow 120mL/min, and voltage 0.5KV, electric current 30A at 750 ℃, is incubated 40 minutes.Sheet material behind the nitrogen treatment carries out performance test, compression strength 36MPa, contact resistance 18m Ω .cm
2, corrosion electric current density 11 μ A/cm
2
Embodiment 2:
Get the thick titanium plate of 0.3mm, cutting out is 120 * 200 sheet material, adopts conventional punching press or mould pressing technology, prepares flow field structure, puts into the ultrasonic cleaning machine and cleans 3 minutes; Put into nitriding furnace subsequently and carry out the nitriding processing, adopt pure nitrogen gas, 3 ℃/min of heating rate, nitrogen pressure are 100Pa, gas flow 120mL/min, and voltage 0.5KV, electric current 35A was 800 ℃ of insulations 60 minutes.Sheet material behind the nitrogen treatment carries out Micro-Structure Analysis and performance test, and the surface has formed TiN, Ti
2The N gradient transitional lay, TiN bed thickness 3.8 μ m (see figure 2)s.Compression strength 53MPa, contact resistance 16m Ω .cm
2, corrosion electric current density 10 μ A/cm
2
Embodiment 3:
Get the thick titanium plate of 0.6mm, cutting out is 100 * 200 sheet material, adopts conventional punching press or mould pressing technology, prepares flow field structure, puts into the ultrasonic cleaning machine and cleans 3 minutes; Put into ion nitriding furnace subsequently and carry out the nitriding processing, adopt pure nitrogen gas, 3 ℃/min of heating rate, nitrogen pressure are 150Pa, gas flow 110mL/min, and voltage 0.6KV, electric current 40A at 650 ℃, is incubated 60 minutes; Obtain light metal surface modified fuel cell ambipolar board.
The bound value of the technological parameter that nitriding of the present invention is handled can both realize the present invention, does not enumerate embodiment one by one at this.
Claims (2)
1. the preparation method of light metal surface modified fuel cell ambipolar board is characterized in that it comprises the steps: 1) be matrix with the titanium plate of 0.15-0.60mm, be cut into specified size; 2) put into mould, adopt punching press or mould pressing technology, prepare flow field structure; 3) the titanium plate that will have a flow field structure is put into the ultrasonic cleaning machine and is cleaned, and removes surface impurity; 3) utilize nitridation technique that modification is carried out on the titanium plate surface that has flow field structure after cleaning and handle, obtain light metal surface modified fuel cell ambipolar board.
2. the preparation method of light metal surface modified fuel cell ambipolar board according to claim 1, it is characterized in that: describedly utilize nitridation technique that modification is carried out on the titanium plate surface that has flow field structure after cleaning to be treated to: average 3～5 ℃/min of heating rate, 650-850 ℃ of ionic nitriding temperature, temperature retention time 30-60 minute, nitrogen pressure 60-150Pa, gas flow 80-120mL/min, voltage 0.5-0.7KV, electric current 10-50A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100513036A CN100495779C (en) | 2007-01-18 | 2007-01-18 | Making method of the improved fuel battery dual-pole board of the light metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100513036A CN100495779C (en) | 2007-01-18 | 2007-01-18 | Making method of the improved fuel battery dual-pole board of the light metal surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101055927A true CN101055927A (en) | 2007-10-17 |
| CN100495779C CN100495779C (en) | 2009-06-03 |
Family
ID=38795635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100513036A Expired - Fee Related CN100495779C (en) | 2007-01-18 | 2007-01-18 | Making method of the improved fuel battery dual-pole board of the light metal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100495779C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999275A (en) * | 2015-06-25 | 2015-10-28 | 南通易实工业制造有限公司 | Machining system and machining method of rolled bush |
| CN109848296A (en) * | 2019-01-10 | 2019-06-07 | 安徽明天氢能科技股份有限公司 | A kind of monopole board production technology for fuel cell |
| CN110983283A (en) * | 2019-12-20 | 2020-04-10 | 欧伊翔 | Preparation method and equipment of Ti/TiCN nano coating for metal bipolar plate of hydrogen fuel cell |
| CN111224119A (en) * | 2019-12-02 | 2020-06-02 | 北京科技大学 | Preparation method and application of nitride coating on surface of titanium alloy bipolar plate |
| CN111477899A (en) * | 2020-02-27 | 2020-07-31 | 太原理工大学 | Conductive corrosion-resistant metal bipolar plate for fuel cell and preparation method thereof |
-
2007
- 2007-01-18 CN CNB2007100513036A patent/CN100495779C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999275A (en) * | 2015-06-25 | 2015-10-28 | 南通易实工业制造有限公司 | Machining system and machining method of rolled bush |
| CN109848296A (en) * | 2019-01-10 | 2019-06-07 | 安徽明天氢能科技股份有限公司 | A kind of monopole board production technology for fuel cell |
| CN111224119A (en) * | 2019-12-02 | 2020-06-02 | 北京科技大学 | Preparation method and application of nitride coating on surface of titanium alloy bipolar plate |
| CN110983283A (en) * | 2019-12-20 | 2020-04-10 | 欧伊翔 | Preparation method and equipment of Ti/TiCN nano coating for metal bipolar plate of hydrogen fuel cell |
| CN111477899A (en) * | 2020-02-27 | 2020-07-31 | 太原理工大学 | Conductive corrosion-resistant metal bipolar plate for fuel cell and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100495779C (en) | 2009-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109346743B (en) | Conductive corrosion-resistant coating for metal bipolar plate of fuel cell | |
| Yi et al. | Impact of film thickness on defects and the graphitization of nanothin carbon coatings used for metallic bipolar plates in proton exchange membrane fuel cells | |
| CN102473935B (en) | Titanium material for solid polymer fuel cell separator, and process for production thereof | |
| CN101682049B (en) | Stainless steel separator for fuel cell having M/MNx and MOyNz layer and method for manufacturing the same | |
| Myung et al. | Nanoparticle TiN-coated type 310S stainless steel as bipolar plates for polymer electrolyte membrane fuel cell | |
| CN100495779C (en) | Making method of the improved fuel battery dual-pole board of the light metal surface | |
| CN104471768B (en) | Fuel cell separator and method for manufacturing the same | |
| CA2373344A1 (en) | Corrosion-resistant metallic member, metallic separator for fuel cell comprising the same, and process for production thereof | |
| CN106374116A (en) | High-entropy alloy composite coating on metal bipolar plate of fuel cell and process | |
| Li et al. | Investigation of single-layer and multilayer coatings for aluminum bipolar plate in polymer electrolyte membrane fuel cell | |
| TWI581490B (en) | Stainless steel for fuel cell separator and manufacturing method thereof | |
| CN109728307A (en) | A kind of preparation and bipolar plates and application of the metal double polar plates based on carbon film modification | |
| Razmjooei et al. | Improving plasma sprayed Raney-type nickel–molybdenum electrodes towards high-performance hydrogen evolution in alkaline medium | |
| CN109852932A (en) | Hydrogen fuel battery metal bi-polar plate and preparation method thereof | |
| CN106684394A (en) | Surface modification method of proton-exchange membrane fuel cells' stainless steel bipolar plates | |
| CN111218656A (en) | High-corrosion-resistance high-conductivity fuel cell metal bipolar plate protective film and preparation method thereof | |
| CN107146899A (en) | Proton exchange membrane fuel cell stainless steel bipolar plate face coat structure and preparation | |
| CN114231925A (en) | Fuel cell metal bipolar plate composite coating and preparation method thereof | |
| CN104269569B (en) | The surface modification of metals connector and its manufacture method of a kind of SOFC | |
| Ma et al. | Enhancing hydrogen evolution reaction by synergistically coupling NiMo alloy with Mo on Ni foam | |
| CN110061257A (en) | Metal-based bipolar plate for PEMFC (proton exchange Membrane Fuel cell) and preparation method thereof | |
| CN101609898B (en) | Preparation method for metal base fuel battery bipolar plate with hydrophobicity | |
| CN1851967A (en) | Metal double-polar board of solid polymer dielectric film fuel cell and making method therefor | |
| Sun et al. | Highly conductive and corrosion-resistant NbN coatings on Ti bipolar plate for proton exchange membrane water electrolysis | |
| CN102637880B (en) | Chromium carbide modified iron-based metal bipolar plate and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20140118 |