CN1635653A - A novel middle-temperature solid oxide fuel cell bipolar plate and application thereof - Google Patents
A novel middle-temperature solid oxide fuel cell bipolar plate and application thereof Download PDFInfo
- Publication number
- CN1635653A CN1635653A CNA2003101208598A CN200310120859A CN1635653A CN 1635653 A CN1635653 A CN 1635653A CN A2003101208598 A CNA2003101208598 A CN A2003101208598A CN 200310120859 A CN200310120859 A CN 200310120859A CN 1635653 A CN1635653 A CN 1635653A
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- plate
- flow field
- bipolar plates
- anode
- cathode
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- 239000007787 solid Substances 0.000 title claims abstract description 20
- 239000000446 fuel Substances 0.000 title claims description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 31
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000007784 solid electrolyte Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Classifications
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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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- Fuel Cell (AREA)
Abstract
This invention discloses the bipolar board of intermediate temperature solid oxide duel cell and application thereof, which consists of positive pole flow field board, positive pole pass way board, partition board, negative pole pass way board and flow field board, gas pass way is set around the each board and inter connected each other, the vertical bar shape holes are set in positive pole flow field board and gas pass way, the transverse bar shape holes are set in negative pole flow field board and gas pass way. Said invented bipolar board has small thickness, light weight and corrosion resisting etc advantages.
Description
Technical field
The present invention relates to Solid Oxide Fuel Cell, is a kind of novel intermediate temperature solid oxide fuel cell bipolar plates and application thereof specifically.
Background technology
Solid Oxide Fuel Cell is a kind of chemical energy to be converted into the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of electric energy, is the new fuel cell technology that twentieth century develops rapidly the eighties.In this device, fuel gas (H
2, CH
4, CO etc.) and oxidant (air, oxygen) but separated by the solid electrolyte film of conduct oxygen ions, solid electrolyte commonly used is yttrium stable zirconium oxide (YSZ).At a certain temperature, the O of cathode side
2-Can pass dielectric film and arrive anode-side and fuel generation oxidation reaction, for charge balance, anode-side then arrives negative electrode by external circuit because of the electronics more than needed that reduction reaction generates, the O of cathode side
2Be reduced to O
2-, in this process, owing in the external circuit passing through of electronics arranged, thus can provide electric energy to the external world.In order to improve the activity of above-mentioned electrochemical reaction, often respectively apply one deck porous catalyst in the both sides of solid electrolyte film, be NiO/ZrO at the anode-side custom catalysts
2Porous ceramic, cathode side are that lattice structure is the La that contains of Ca-Ti ore type, Sr, the oxide of Mn.
In theory, the Open Circuit Potential of a monocell only is about 1 volt, be difficult to satisfy the needs of the daily productive life of people, in order to make it become practical generation technology, must stack up a plurality of monocells is connected into battery pack and externally powers, and this just needs bipolar plates to connect the anode and the negative electrode of adjacent single cells.Bipolar plates is a vitals of fuel cell system, because of its effect of not only playing the fuel gas and the oxygen of separating adjacent monocell, also plays the effect of distribution of gas and conduction current.In general, the bipolar plates as intermediate temperature solid oxide fuel cell must have following characteristic:
1. certain mechanical strength;
2. air-tightness is good;
3. cheap, easily processing;
4. the thermal coefficient of expansion close with electrode material arranged;
5. good electrical conductivity;
6. all corrosion-resistant in oxidation under higher temperature and the reducing atmosphere.
Because the restriction of above-mentioned condition material, at present, bipolar plate material commonly used has LCC (La
1-xCa
xCrO
3) (United States Patent (USP): US006228520B1) with chromium-nickel alloy material (United States Patent (USP): US005733682A), with regard to the LCC material, though its high temperature oxidation resistance is strong, the conductivity height, thermal coefficient of expansion and electrode material are close, but its sintering character is poor, are difficult to the preparation moulding, moreover cost an arm and a leg, the cost of bipolar plates accounts for 80% of battery pack total cost.Comparatively speaking, though the chromium-nickel alloy material can partly overcome the deficiency of LCC material, its long-term stability in use is poor, and the Cr element is at high temperature volatile, and the Cr element deposition that volatilizes poisons anode catalyst at anode surface.
Because bipolar plates is gas partitions plate and gas Flow Field Distribution plate simultaneously, the gas passage of cloth complexity all need be opened in its both sides, its air-tightness and mechanical strength is all had higher requirements, under the condition of existing mechanical process technology and forming technique, the bipolar plates volume that above-mentioned material is done is big, Heavy Weight.The gross thickness of general solid electrolyte film and electrode material is below 1mm, and the thickness of bipolar plates is at 6-10mm, have in addition surpass 10mm; The weight of bipolar plates accounts for more than 95% of whole battery group weight, greatly reduces the Unit Weight power output and the unit volume power output of entire cell.
Moreover for thick and heavy bipolar plates, because its internal stress is difficult to eliminate, yielding in the high temperature use, this brings very big difficulty with regard to the elevated-temperature seal of giving whole battery group.
Summary of the invention
The object of the present invention is to provide a kind of bipolar plates thickness little, in light weight, good conductivity, a kind of novel intermediate temperature solid oxide fuel cell bipolar plates and application thereof that corrosion resistance is strong.
For achieving the above object, the technical solution used in the present invention is:
A kind of novel intermediate temperature solid oxide fuel cell bipolar plates is successively by shape, measure-alike affixed the forming of anode flow field board, anode passageway plate, demarcation strip, cathode passageway plate and cathode flow field plate; Around every block of plate, be respectively equipped with gas passage, upper channel is the anode inlet channel, and following wing passage is the anode exhaust gas passage, and left channel is the cathode inlet passage, right channel is the cathode exhaust gas passage, and gas passage corresponding between plate and the plate is interconnected and shape, measure-alike; The middle part of anode flow field board is provided with the vertical bar hole that does not communicate with this plate gas passage, and effect is transmission and efficient distributed anode gas, and its width can be identical or different; Inwardly be provided with the vertical bar hole of top closure respectively in the gas passage inboard of upper and lower two ends of anode passageway plate, the position of vertical bar hole, shape are corresponding with vertical bar hole on the anode flow field board, and partially overlap; The middle part of cathode flow field plate is provided with the horizontal bar hole that does not communicate with this plate gas passage, and effect is transmission and efficient distribution negative electrode gas, and its width can be identical or different; Inwardly be provided with the horizontal bar hole of top closure respectively in the gas passage inboard of left and right two ends of cathode passageway plate, laterally the position of bar hole, shape are corresponding with horizontal bar hole on the cathode flow field plate, and partially overlap.
The thickness of described anode flow field board, anode passageway plate, cathode passageway plate and cathode flow field plate is 0.1-1mm, and the width of the bar hole on it is 0.1-10mm; Bar hole intersection on described anode flow field board and anode passageway plate, cathode flow field plate and the cathode passageway plate is respectively 1～20% of bar hole length on anode flow field board and the cathode flow field plate; The area of bar hole accounts for the 5%-75% of flow-field plate effective area on anode flow field board and the cathode flow field plate; Anode passageway plate up and down on the gas passage of two ends and/or cathode passageway plate about be provided with support bar on the gas passage of two ends, in order to increase the bulk strength of bipolar plates, the width of support bar is 2-15mm; The thickness of demarcation strip is 0.5-1mm, and its effect is to stop the negative electrode gas phase of the anode gas of monocell and adjacent single cells to be mixed; Bipolar plates is made by nickel-bass alloy material, and wherein nickel content is greater than 80%; Described anode flow field board, anode passageway plate, demarcation strip, cathode passageway plate and cathode flow field plate can adopt the method preparation of machining, after each component processing is good, at its surface spraying one deck scolder, with solder technology it are welded together.
The serviceability temperature scope of bipolar plates of the present invention is generally 600～900 ℃.
The present invention has following advantage:
1. bipolar plates thickness is little, and is in light weight, the Unit Weight power output of battery and unit volume power output height.Bipolar plates of the present invention adopts the MULTILAYER COMPOSITE method to make, a bipolar plates is divided into five layers, be followed successively by anode flow field board, anode passageway plate, demarcation strip, cathode passageway plate and, cathode flow field plate, the design processing respectively of each layer, and then each layer welded together become a bipolar plates, overcome existing machinery process technology and forming technique thickness requirement to bipolar plates, eliminated the shortcoming that needs to increase bipolar plates thickness owing to the difficulty of machining, make bipolar plates thickness, weight reduces, thereby has improved the Unit Weight power output and the unit volume power output of entire cell.
2. good conductivity, corrosion resistance is strong.The present invention adopts metal alloy compositions to make bipolar plates, chooses the good nickel content of performance especially at the nickel-bass alloy material more than 80%, makes bipolar plates have advantages such as good electrical conductivity and corrosion resistance.
Description of drawings
Below by accompanying drawing, the present invention will be further described in conjunction with example.
Accompanying drawing 1 is anode flow field board structural representation (effective area 100cm
2);
Accompanying drawing 2 is the anode passageway plate structural representation;
Accompanying drawing 3 is the partition plate structure schematic diagram;
Accompanying drawing 4 is the cathode passageway plate structural representation;
Accompanying drawing 5 is cathode flow field plate structural representation (effective area 100cm
2);
Accompanying drawing 6 is the present invention (each layer is compound) structural representation.
Embodiment
Embodiment 1
A kind of novel intermediate temperature solid oxide fuel cell bipolar plates, adopt the method preparation of machining by shape, measure-alike anode flow field board 1, anode passageway plate 2, demarcation strip 3, cathode passageway plate 4 and cathode flow field plate 5 successively, after each component processing is good, at its surface spraying one deck scolder, it is welded together with solder technology; Around every block of plate, be respectively equipped with gas passage, upper channel is an anode inlet channel 6, and following wing passage is an anode exhaust gas passage 7, and left channel is a cathode inlet passage 8, right channel is a cathode exhaust gas passage 9, and gas passage corresponding between plate and the plate is interconnected and shape, measure-alike; The middle part of anode flow field board is provided with the vertical bar hole that does not communicate with this plate gas passage, effect is transmission and efficient distributed anode gas, its width is identical, inwardly be provided with the vertical bar hole of top closure respectively in the gas passage inboard of upper and lower two ends of anode passageway plate, the position of vertical bar hole, shape are corresponding with vertical bar hole on the anode flow field board, and partially overlap; The middle part of cathode flow field plate is provided with the horizontal bar hole that does not communicate with this plate gas passage, and effect is transmission and efficient distribution negative electrode gas, and its width is identical; Inwardly be provided with the horizontal bar hole of top closure respectively in the gas passage inboard of left and right two ends of cathode passageway plate, laterally the position of bar hole, shape are corresponding with horizontal bar hole on the cathode flow field plate, and partially overlap.
The thickness of anode flow field board, anode passageway plate, cathode passageway plate and cathode flow field plate is 0.5mm, bar hole intersection on anode flow field board and anode passageway plate, cathode flow field plate and the cathode passageway plate, be respectively 10% of bar hole length on anode flow field board and the cathode flow field plate, anode passageway plate up and down on the gas passage of two ends and/or cathode passageway plate about be respectively equipped with two support bars on the gas passage of two ends, in order to increase the bulk strength of bipolar plates, the width of support bar is 5mm; The thickness of demarcation strip is 1mm; Bipolar plates is made by nickel-bass alloy material, and wherein nickel content is 85%;
By above-mentioned design processing, the thickness of bipolar plates is 3mm, and weight is 0.756Kg, and effective area is 100cm
2, the width of each bar hole is 3mm, the bar hole gross area is 50cm
2, account for 50% of whole bipolar plates effective area.
Embodiment 2
In order to reduce the internal resistance of battery pack, increase the contact area of electrode and bipolar plates, copying embodiment 1 to produce the bar hole gross area is 5cm
2Bipolar plates, in this bipolar plates, the width of each bar hole only is 0.3mm.
Embodiment 3
Form battery pack by the bipolar plates among the embodiment 1, at 750 ℃, it is 720W that battery pack obtains peak power output.
Claims (10)
1. novel intermediate temperature solid oxide fuel cell bipolar plates is characterized in that: bipolar plates is successively by shape, measure-alike affixed the forming of anode flow field board, anode passageway plate, demarcation strip, cathode passageway plate and cathode flow field plate; Be respectively equipped with gas passage around every block of plate, gas passage corresponding between plate and the plate is interconnected and shape, measure-alike; The middle part of anode flow field board is provided with vertical bar hole; Inwardly be provided with the vertical bar hole of top closure respectively in the gas passage inboard of upper and lower two ends of anode passageway plate, vertical bar hole is corresponding with vertical bar hole on the anode flow field board and partially overlap; The middle part of cathode flow field plate is provided with horizontal bar hole: inwardly be provided with the horizontal bar hole of top closure respectively in the gas passage inboard of left and right two ends of cathode passageway plate, laterally bar hole is corresponding with horizontal bar hole on the cathode flow field plate and partially overlap.
2. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: the thickness of described anode flow field board, anode passageway plate, cathode passageway plate and cathode flow field plate is 0.1-1mm.
3. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: the width of bar hole is 0.1-10mm on described anode flow field board, anode passageway plate, cathode passageway plate and the cathode flow field plate.
4. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: the bar hole intersection is respectively 1～20% of bar hole length on anode flow field board and the cathode flow field plate on described anode flow field board and anode passageway plate, cathode flow field plate and the cathode passageway plate.
5. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: the area of bar hole accounts for the 5%-75% of flow-field plate effective area on described anode flow field board and the cathode flow field plate.
6. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: anode passageway plate up and down on the gas passage of two ends and/or cathode passageway plate about be provided with support bar on the gas passage of two ends.
7. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 6, it is characterized in that: the width of described support bar is 2-15mm.
8. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: the thickness of described demarcation strip is 0.5-1mm.
9. according to the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1, it is characterized in that: bipolar plates is made by nickel-bass alloy material, and wherein nickel content is greater than 80%.
10. the described novel intermediate temperature solid oxide fuel cell bipolar plates of claim 1 is used, and it is characterized in that: the serviceability temperature scope of bipolar plates is 600～900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101208598A CN1302569C (en) | 2003-12-30 | 2003-12-30 | A novel middle-temperature solid oxide fuel cell bipolar plate and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101208598A CN1302569C (en) | 2003-12-30 | 2003-12-30 | A novel middle-temperature solid oxide fuel cell bipolar plate and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1635653A true CN1635653A (en) | 2005-07-06 |
| CN1302569C CN1302569C (en) | 2007-02-28 |
Family
ID=34843998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101208598A Expired - Lifetime CN1302569C (en) | 2003-12-30 | 2003-12-30 | A novel middle-temperature solid oxide fuel cell bipolar plate and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1302569C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295805C (en) * | 2005-07-22 | 2007-01-17 | 北京工业大学 | Asymmetric interlaced flow passage double pole plate of proton exchange membrane fuel cell |
| CN101595588B (en) * | 2006-11-09 | 2013-03-27 | Mim陶瓷制品有限公司 | Solid oxide fuel cell |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6132361A (en) * | 1984-07-23 | 1986-02-15 | Hitachi Ltd | Fuel cell |
| US5773161A (en) * | 1996-10-02 | 1998-06-30 | Energy Research Corporation | Bipolar separator |
| CN1121075C (en) * | 1998-07-22 | 2003-09-10 | 大连新源动力股份有限公司 | Double electrode plate of proton exchange film fuel cell |
| CN1224126C (en) * | 1998-12-25 | 2005-10-19 | 亚乐克株式会社 | Fuel cell, fuel cell separator, and method of manufacture of separator |
| JP4156213B2 (en) * | 2001-06-12 | 2008-09-24 | 東京瓦斯株式会社 | Solid oxide fuel cell |
| JP2003020278A (en) * | 2001-07-06 | 2003-01-24 | Unitika Ltd | Carbonaceous thin plate |
-
2003
- 2003-12-30 CN CNB2003101208598A patent/CN1302569C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295805C (en) * | 2005-07-22 | 2007-01-17 | 北京工业大学 | Asymmetric interlaced flow passage double pole plate of proton exchange membrane fuel cell |
| CN101595588B (en) * | 2006-11-09 | 2013-03-27 | Mim陶瓷制品有限公司 | Solid oxide fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1302569C (en) | 2007-02-28 |
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Effective date of registration: 20201228 Address after: Room 207, Building A, Emerging Industry Development Center, Zhangjiagang Free Trade Zone, Suzhou City, Jiangsu Province Patentee after: ZHANGJIAGANG INDUSTRY TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES Patentee after: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Address before: 116023 No. 457, Zhongshan Road, Liaoning, Dalian Patentee before: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES |
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