CN1516307A - Fuel cell whose flow guide groove has hydrophobic inner wall - Google Patents
Fuel cell whose flow guide groove has hydrophobic inner wall Download PDFInfo
- Publication number
- CN1516307A CN1516307A CNA031011217A CN03101121A CN1516307A CN 1516307 A CN1516307 A CN 1516307A CN A031011217 A CNA031011217 A CN A031011217A CN 03101121 A CN03101121 A CN 03101121A CN 1516307 A CN1516307 A CN 1516307A
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- CN
- China
- Prior art keywords
- fuel cell
- gas
- flow field
- hydrophobic
- wall
- 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.)
- Pending
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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
The invention is a fuel cell, the inner wall of its guide groove of the reaction current field is covered with hydrophobic material (or perform surface finishing to make the original material hydrophobic), which makes superfluous water easily blown away by the reation gas. The reaction current field can be both the current field of fuel gas and that of oxidant gas, and also use the two current fields at the same time.
Description
Technical field:Fuel cell
Technical background:
Fuel cell is when work, and water balance is a problem that is difficult to control.The water yield is few slightly, and dielectric film is become dry, thereby makes the electromigration of proton become difficult, the operation of fuel cells mis-behave.The water yield is many slightly, forms ponding again easily in guiding gutter, stops up the path of reacting gas, makes the fuel cell partial failure, and service behaviour worsens.The reason of water blockoff is because the water yield is too many on the one hand, also is because guiding gutter inner-wall material surface hydrophilic makes unnecessary water be blown away by reacting gas than difficult on the other hand.
Summary of the invention:
A kind of fuel cell, the guiding gutter inwall of its reactant gas flow field are coated with hydrophobic material (perhaps original material do surface processing being made its hydrophobic), thereby have reduced the adhesive force of water and guiding gutter inwall, make unnecessary water more easily be blown away by reacting gas.Here the reactant gas flow field of indication both can be the flow field of fuel gas, also can be the flow field of oxidant gas, can also be that above-mentioned two aspects adopt simultaneously.
Fig. 1 is the guiding gutter schematic diagram of general fuel cell, and Fig. 2 is the guiding gutter schematic diagram of fuel cell among the present invention.
Because hydrophobic material is electric insulation often, and only the guiding gutter inwall is covered often difficulty relatively of contact-making surface that processing do not cover flow-field plate (or flow field body) and electrode.So, can add in covering and both covered the guiding gutter inwall man-hour, cover this contact-making surface again, with machining the hydrophobic material on the contact-making surface is removed then.This process program is just for the ease of implementing, not as the restriction to the invention right.
Claims (1)
1 one kinds of fuel cells, the guiding gutter inwall of its reactant gas flow field are coated with hydrophobic material (perhaps original material do surface processing being made its hydrophobic), thereby have reduced the adhesive force of water and guiding gutter inwall, make unnecessary water more easily be blown away by reacting gas.Here the reactant gas flow field of indication both can be the flow field of fuel gas, also can be the flow field of oxidant gas, can also be that above-mentioned two aspects adopt simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031011217A CN1516307A (en) | 2003-01-08 | 2003-01-08 | Fuel cell whose flow guide groove has hydrophobic inner wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031011217A CN1516307A (en) | 2003-01-08 | 2003-01-08 | Fuel cell whose flow guide groove has hydrophobic inner wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1516307A true CN1516307A (en) | 2004-07-28 |
Family
ID=34239046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031011217A Pending CN1516307A (en) | 2003-01-08 | 2003-01-08 | Fuel cell whose flow guide groove has hydrophobic inner wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1516307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383424B (en) * | 2007-09-07 | 2013-05-15 | 通用汽车环球科技运作公司 | Fuel cell bipolar plate exit for improved flow distribution and freeze compatibility |
-
2003
- 2003-01-08 CN CNA031011217A patent/CN1516307A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383424B (en) * | 2007-09-07 | 2013-05-15 | 通用汽车环球科技运作公司 | Fuel cell bipolar plate exit for improved flow distribution and freeze compatibility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |