CN113125326B - Carbon paper IP air permeability test fixture for fuel cell - Google Patents
Carbon paper IP air permeability test fixture for fuel cell Download PDFInfo
- Publication number
- CN113125326B CN113125326B CN202110515057.5A CN202110515057A CN113125326B CN 113125326 B CN113125326 B CN 113125326B CN 202110515057 A CN202110515057 A CN 202110515057A CN 113125326 B CN113125326 B CN 113125326B
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- carbon paper
- fuel cell
- sides
- upper cover
- air permeability
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 88
- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 230000035699 permeability Effects 0.000 title claims abstract description 28
- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 238000009423 ventilation Methods 0.000 claims description 33
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 238000003475 lamination Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000012945 sealing adhesive Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- 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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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a carbon paper IP air permeability testing tool for a fuel cell, which comprises a lower bottom plate, an upper cover plate, two side plates and a plug gauge, wherein the center of the top surface of the lower bottom plate is a carbon paper placing surface, two lower air grooves are arranged on two sides of the carbon paper placing surface, the outermost two sides of the top surface of the lower bottom plate are plug gauge placing surfaces, the center of the bottom plate of the upper cover plate is a carbon paper pressing surface, two upper air grooves are arranged on two sides of the carbon paper pressing surface, the outermost two sides of the top surface of the lower bottom plate are plug gauge pressing surfaces, the lower bottom plate and the upper cover plate are folded up and down to form a pressing module, the upper air grooves and the lower air grooves are folded to form two air pipe holes, a sealing unit is arranged between gaps close to the plug gauge sides, the two side plates are respectively and hermetically arranged on two sides of the pressing module, and a gas inlet and a gas outlet are arranged on each side plate. Compared with the prior art, the invention realizes the direct test of the IP air permeability of the carbon paper, has simple and convenient operation and is convenient for the design and selection of the follow-up hydrogen fuel cell.
Description
Technical Field
The invention relates to the field of fuel cell design and test, in particular to a carbon paper IP air permeability test fixture for a fuel cell.
Background
In the design stage of the hydrogen fuel cell, the selection of the membrane electrode carbon paper is very important, wherein one of the key factors is the IP (In Plane) air permeability of the carbon paper, and the parameter is used for representing the performance of the carbon paper and can be used for evaluating the air permeability of the carbon paper. The adoption of the carbon paper with good air permeability can obviously improve drainage under the ridge of the fuel cell, accelerate mass transfer and improve the performance of the cell. At present, the selection of membrane electrode carbon paper is usually selected empirically, and then the actual performance test is carried out in the fuel cell, so that the design cost is high and the period is long. Thus, the market lacks a device capable of directly testing the IP air permeability of membrane electrode carbon paper.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a carbon paper IP air permeability testing tool for a fuel cell.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a carbon paper IP air permeability test fixture for fuel cell, includes lower plate, upper cover plate, two curb plates and clearance gauge, the top surface central authorities of lower plate are the carbon paper and place the face, are equipped with two lower ventilation slots in the both sides of carbon paper and place the face, and the outermost both sides of lower plate top surface are the clearance gauge and place the face, the bottom plate central authorities of upper cover plate are the carbon paper pressfitting face, are equipped with two upper ventilation slots in the both sides of carbon paper pressfitting face, and the outermost both sides of lower plate top surface are the clearance gauge pressfitting face, fold from top to bottom and form the pressfitting module down, with test carbon paper centre gripping between carbon paper place the face and the clearance gauge pressfitting face, upper ventilation slot and lower ventilation slot fold and form two ventilation tube holes simultaneously, and the both sides of every ventilation tube hole form two gaps because of upper cover plate and lower plate, be provided with sealing unit between the clearance near the clearance gauge side, two curb plates are sealed respectively and install in the both sides of pressfitting module, are equipped with gas inlet and outlet on every curb plate, gas aligns the both ends of connecting ventilation tube hole.
Further, the test carbon paper completely covers the carbon paper placement surface.
Further, the feeler gauge is a metal sheet, and the thickness of the feeler gauge is smaller than that of the test carbon paper.
Further, the sealing unit comprises sealing cement or sealing tape, and covers the gap.
Further, the sealing unit further includes a silica gel pad clamped between the gaps.
Further, the lower bottom plate is provided with a bolt hole, the upper cover plate is provided with a through hole, and the upper cover plate and the lower bottom plate are fixed by penetrating through the bolt hole.
Further, the lower bottom plate and the upper cover plate are respectively provided with a pin hole with corresponding positions, and the upper cover plate and the lower bottom plate pass through the two pin holes through pins to fix the positions.
Further, an adhesive soft rubber pad is arranged between the side plate and the pressing module, and the side plate is attached to the pressing module through the adhesive soft rubber pad.
Further, two ends of one ventilation pipe hole are respectively connected with the pressure reducing valve and the first pressure gauge through the gas inlet and outlet, and two ends of the other ventilation pipe hole are respectively connected with the mass flowmeter and the second pressure gauge through the gas inlet and outlet.
Further, the carbon paper placing surface is 0.2-0.3 mm higher than the feeler gauge placing surface.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the test fixture with a simple structure is formed by the lower bottom plate, the upper cover plate, the two side plates and the feeler gauge, so that the direct test of the IP air permeability of the carbon paper is realized, the operation is simple and convenient, the carbon paper is only clamped between the lower bottom plate and the upper cover plate when the test fixture is used, and then the test can be performed by sealing the side plates, thereby facilitating the design and selection of the subsequent hydrogen fuel cell, effectively reducing the design cost and shortening the research and development period. Meanwhile, the compression rate of the carbon paper can be changed by selecting the plugs with different thicknesses, so that the IP air permeability test of the carbon paper under different compression rates is realized, and the applicability is good.
2. The ventilation pipe hole is internally sealed by sealing cement or sealing adhesive tape, so that the ventilation pipe hole is easy to operate and can be repeatedly utilized, and the requirement of test repeatability is met. And the use of the silica gel pad can further improve the sealability.
3. The upper cover plate and the lower bottom plate are connected through bolts, so that stability of a testing process is ensured, assembly force is more uniform, and compression rate and sealing of carbon paper are more easily ensured. Meanwhile, the invention can perform preliminary positioning through the pin holes and the pins and then reduce the operation difficulty through the bolt connection.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of an explosive structure according to the present invention.
Fig. 3 is a schematic structural diagram of the lamination module.
Fig. 4 is a schematic diagram of the testing principle of the present invention.
Reference numerals: 1. the carbon paper pressure gauge comprises a lower bottom plate, 11, a carbon paper placing surface, 12, a lower ventilation groove, 13, a clearance gauge placing surface, 14, bolt holes, 15, side bolt holes, 2, an upper cover plate, 21, a carbon paper pressure-fit surface, 22, an upper ventilation groove, 23, a clearance gauge pressure-fit surface, 24, through holes, 25, pin holes, 3, side plates, 31, gas inlets and outlets, 32, side through holes, 4, clearance gauges, 5, test carbon paper, 6, a sealing unit, 7, pin holes, 8, an adhesive soft rubber pad, 91, a pressure reducing valve, 92, a mass flowmeter, 100, a pressure-fit module, 200 and ventilation pipe holes.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
As shown in fig. 1 to 3, the embodiment provides a carbon paper IP air permeability test fixture for a fuel cell, which comprises a lower bottom plate 1, an upper cover plate 2, two side plates 3 and a feeler gauge 4. The center of the top surface of the lower bottom plate 1 is a carbon paper placing surface 11, two lower ventilation grooves 12 are arranged on two sides of the carbon paper placing surface 11, and two feeler gauge placing surfaces 13 are arranged on two outer sides of the two lower ventilation grooves 12. The center of the bottom plate of the upper cover plate 2 is provided with a carbon paper pressing surface 21, two upper ventilation grooves 22 are arranged on two sides of the carbon paper pressing surface 21, and two feeler gauge pressing surfaces 23 are arranged on two outer sides of the two upper ventilation grooves 22. When in use, the lower bottom plate 1 and the upper cover plate 2 are folded up and down to form the pressing module 100, the test carbon paper 5 is clamped between the carbon paper placing surface 11 and the carbon paper pressing surface 21, and the feeler 4 is clamped between the feeler placing surface 13 and the feeler pressing surface 23. The upper vent slot 22 and the lower vent slot 12 are closed to form two vent holes 200. The two side plates 3 are respectively and hermetically installed at two sides of the lamination module 100, and each side plate 3 is provided with two gas inlets and outlets 31, and the gas inlets and outlets 31 are aligned and connected with two ends of the ventilation pipe hole 200.
In this embodiment, because the vent hole 200 is formed by folding the upper vent groove 22 and the lower vent groove 12, and the carbon paper and the feeler 4 are clamped between the upper cover plate 2 and the lower base plate 1, there is a gap between both sides of the vent hole 200. The gap near the test carbon paper 5 is the gas flow hole of the test carbon paper 5, and the gap near the feeler gauge 4 is sealed by a sealing unit 6. The sealing unit 6 may be made of sealing cement or sealing tape, and in this embodiment, sealing tape is preferably used. The sealing unit 6 may further comprise a silicone pad, which is clamped in the gap to further improve the sealing performance.
In this embodiment, the upper cover plate 2 and the lower base plate 1 are connected by bolts, specifically: the lower bottom plate 1 is provided with a bolt hole 14, the upper cover plate 2 is provided with a through hole 24, and bolts penetrate through the through hole 24 to connect the bolt hole 14 so as to fix the upper cover plate 2 and the lower bottom plate 1. The mode of bolt connection ensures that the assembly force is more uniform, and the compression rate and sealing of the carbon paper are easier to ensure. Pin holes 7 corresponding to the positions can be arranged on the lower bottom plate 1 and the upper cover plate 2. During the use, upper cover plate 2 and lower plate 1 pass two pinhole 7 through the pin and carry out preliminary position fixation, then screw up the bolt and compress test carbon paper 5, improve the operating convenience.
In this embodiment, four feelers 4 are used in total, two on each side, disposed between the lower plate 1 and the upper plate 2. The feeler gauge 4 is a long metal sheet, and the thickness of the feeler gauge is smaller than that of the test carbon paper 5. In use, the compressibility of the test carbon paper 5 is ensured by selecting a feeler 4 of suitable thickness. The feeler gauge 4 can be clamped by half, and the other half extends out from two ends of the pressing module 100 to be suspended, so that the position is convenient to adjust. Because the test carbon paper 5 requires a pre-compression during installation, the carbon paper placement surface 11 may be higher than the clearance gauge placement surface 13, typically 0.2-0.3 mm, preferably 0.2mm.
In this embodiment, an adhesive soft rubber pad 8 is disposed between the side plate 3 and the lamination module 100, and the adhesive soft rubber pad 8 covers the entire side plate 3, so that the side plate 3 is attached to the lamination module 100 through the adhesive soft rubber pad 8. The adhesive soft rubber pad 8 can be a common 3M transparent soft rubber belt, and the soft rubber belt loses the adhesive property when being heated, so that the soft rubber belt can be reused. In another embodiment, the two sides of the pressing module 100 are also provided with side bolt holes 15, the side plate 3 is also provided with side through holes 32, and the side plate 3 and the pressing module 100 are further fixed by passing the side bolts through the side through holes 32 and the side bolt holes 15, so that the air tightness of the tooling is ensured.
The test method applying the embodiment is as follows:
the first step: the cutting length and width of the carbon paper are larger than those of the carbon paper placing surface 11. A sample of the test carbon paper 5 is placed on the carbon paper placing surface 11 of the lower plate 1. The feeler 4 of a thickness corresponding to the compression ratio is placed on the feeler-placing surface 13. The compressibility of the carbon paper is controlled by using plugs 4 of different thickness.
And a second step of: the upper cover plate 2 is pressed on the lower bottom plate 1, the pin passes through the pin hole 7 to be positioned and fixed preliminarily, the silica gel pad and the sealing adhesive tape are arranged in the outer gap of the formed ventilation pipe hole 200 to seal, and then the bolt passes through the silica gel pad to be fastened and fixed, so that the compaction of the feeler gauge 4 is ensured. The excess surface around the side carbon paper is cut off, so that the test carbon paper 5 completely covers and aligns with the carbon paper placement surface 11.
And a third step of: after the bolt holes 14 and the air holes are cut out of the 3M transparent soft rubber mat, the soft rubber mat is attached to the two side plates 3. The sealing surfaces of the lamination module 100 are then aligned and bolted diagonally.
Fourth step: after the assembly of the tooling is completed, a pressure reducing valve 91 is connected, and a mass flowmeter 92 and an air source are used for detecting leakage. As shown in fig. 4, specifically, two ends of one ventilation pipe hole 200 are respectively connected to a pressure reducing valve 91 and a first pressure gauge P1, and two ends of the other ventilation pipe hole 200 are respectively connected to a mass flowmeter 92 and a second pressure gauge P2, and the pressure reducing valve 91 is connected to an air source.
Sixth step: confirming leakage amount after leak detection<0.5% and tested for IP air permeability. The air flow enters one ventilation tube hole 200 (inlet side cavity) through the pressure reducing valve 91, then diffuses through the test carbon paper 5 into the other ventilation tube hole 200 (outlet side cavity), and finally flows out through the mass flowmeter 92. Collecting inlet side pressure P at different flow rates in the process IN And an outlet side pressure P OUT . And calculating the permeability K value of the IP direction according to a formula, wherein the calculation expression is as follows:
wherein P is IN I.e. the inlet side pressure, P OUT I.e. the outlet pressure, L is the length of the carbon paper placing surface 11, R is the ideal gas constant, T is the environmentTemperature, MW AIR The molar mass of air, μ is aerodynamic viscosity, K is permeability, m' is mass flux kg/m2s through the test carbon paper 5, β is the inertia coefficient.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (9)
1. The utility model provides an air permeability test fixture in carbon paper surface for fuel cell, its characterized in that includes lower plate (1), upper cover plate (2), two curb plates (3) and clearance gauge (4), the top surface central authorities of lower plate (1) are carbon paper and place face (11), are equipped with two lower ventilation slots (12) in the both sides of carbon paper place face (11), and the outermost both sides of lower plate (1) top surface are clearance gauge place face (13), the bottom plate central authorities of upper cover plate (2) are carbon paper pressfitting face (21), are equipped with two upper ventilation slots (22) in the both sides of carbon paper pressfitting face (21), are clearance gauge pressfitting face (23) in the outside both sides of two upper ventilation slots (22), form clearance gauge (100) in upper and lower closure of upper cover plate (2), with test carbon paper (5) centre gripping between carbon paper place face (11) and carbon paper pressfitting face (21), with clearance gauge (4) centre gripping between clearance gauge place face (13) and clearance gauge pressfitting face (23) simultaneously, clearance gauge (200) are formed in two upper ventilation slots (12) and two sides clearance gauge (200) and two sides (200) are closed up and down in two upper cover plate (2), the two side plates (3) are respectively and hermetically arranged at two sides of the pressing module (100), each side plate (3) is provided with a gas inlet and outlet (31), the gas inlet and outlet (31) is aligned and connected with two ends of the ventilation pipe hole (200), two ends of one ventilation pipe hole (200) are respectively connected with the pressure reducing valve (91) and the first pressure gauge through the gas inlet and outlet (31), and two ends of the other ventilation pipe hole (200) are respectively connected with the mass flowmeter (92) and the second pressure gauge through the gas inlet and outlet (31);
during testing, air flow enters one ventilation pipe hole (200) through a pressure reducing valve (91), namely an inlet side cavity, then is diffused into the other ventilation pipe hole (200) through test carbon paper (5), namely an outlet side cavity, and finally flows out through a mass flowmeter (92); collecting inlet side pressure P at different flow rates in the process IN And an outlet side pressure P OUT The method comprises the steps of carrying out a first treatment on the surface of the And calculating the permeability K value of the in-plane direction according to a formula, wherein the calculation expression is as follows:
wherein P is IN I.e. the inlet side pressure, P OUT Namely the outlet side pressure, L is the length of the carbon paper placing surface (11), R is the ideal gas constant, T is the ambient temperature, MW AIR Is the molar mass of air, mu is the aerodynamic viscosity, K is the permeability, m' is the mass flux kg/m through the test carbon paper (5) 2 s, β is the inertia coefficient.
2. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 1, wherein the test carbon paper (5) completely covers the carbon paper placing surface (11).
3. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 1, wherein the feeler gauge (4) is a metal sheet, and the thickness of the feeler gauge is smaller than that of the test carbon paper (5).
4. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 1, wherein the sealing unit (6) comprises sealing cement or sealing adhesive tape, and the sealing cement or the sealing adhesive tape is covered at the gap.
5. The tool for testing air permeability in carbon paper surface for fuel cell according to claim 4, wherein the sealing unit (6) further comprises a silica gel pad, the silica gel pad being clamped between the gaps.
6. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 1, wherein the bolt holes (14) are formed in the lower base plate (1), through holes (24) are formed in the upper cover plate (2), and the upper cover plate (2) and the lower base plate (1) are fixed through bolts penetrating through the through holes (24) and connecting the bolt holes (14).
7. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 6, wherein the lower base plate (1) and the upper cover plate (2) are respectively provided with pin holes (7) corresponding to each other, and the upper cover plate (2) and the lower base plate (1) pass through the two pin holes (7) through pins to fix the positions.
8. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 1, wherein an adhesive soft rubber pad (8) is arranged between the side plate (3) and the lamination module (100), and the side plate (3) is attached to the lamination module (100) through the adhesive soft rubber pad (8).
9. The tool for testing the air permeability in the carbon paper surface for the fuel cell according to claim 1, wherein the carbon paper placing surface (11) is 0.2-0.3 mm higher than the clearance gauge placing surface (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515057.5A CN113125326B (en) | 2021-05-12 | 2021-05-12 | Carbon paper IP air permeability test fixture for fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110515057.5A CN113125326B (en) | 2021-05-12 | 2021-05-12 | Carbon paper IP air permeability test fixture for fuel cell |
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| CN113125326A CN113125326A (en) | 2021-07-16 |
| CN113125326B true CN113125326B (en) | 2023-05-30 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201072373Y (en) * | 2007-08-28 | 2008-06-11 | 汉能科技有限公司 | Simple air permeability tester |
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| JP2006073263A (en) * | 2004-08-31 | 2006-03-16 | Mitsubishi Rayon Co Ltd | Gas permeability evaluation device of gas diffusion substrate for fuel cell |
| US7913572B2 (en) * | 2009-03-18 | 2011-03-29 | Korea Institute Of Energy Research | Integrated multi-measurement system for measuring physical properties of gas diffusion layer for polymer electrolyte fuel cell with respect to compression |
| CN201425569Y (en) * | 2009-06-19 | 2010-03-17 | 武汉银泰科技燃料电池有限公司 | Testing clamp with longitudinal and transverse permeating degree of testing materials and tester |
| KR100972956B1 (en) * | 2010-05-04 | 2010-07-30 | 한국에너지기술연구원 | Quality control apparatus for gas diffusion layer for fuel cells |
| CN102183444B (en) * | 2011-01-27 | 2013-09-25 | 中国商用飞机有限责任公司 | Device and method for testing gas permeability in inner direction of paving layer surface |
| CN102141504B (en) * | 2011-01-27 | 2013-06-12 | 中国商用飞机有限责任公司 | Testing device and method for testing gas penetration rate in thickness direction of overlay |
| CN103852406A (en) * | 2012-12-04 | 2014-06-11 | 中国科学院大连化学物理研究所 | Device for testing air permeability of carbon paper/diffusion layer and usage method of device |
| CN111896453B (en) * | 2020-07-31 | 2023-10-13 | 上海交通大学 | Method and device for measuring permeability and diffusion coefficient of gas diffusion layer for fuel cell |
| CN112098298A (en) * | 2020-09-15 | 2020-12-18 | 安徽明天氢能科技股份有限公司 | Device and method for testing anisotropic permeability of fuel cell carbon paper |
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2021
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|---|---|---|---|---|
| CN201072373Y (en) * | 2007-08-28 | 2008-06-11 | 汉能科技有限公司 | Simple air permeability tester |
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| Title |
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| Single phase through-plane permeability of carbon paper gas diffusion layers;A. Tamayol et al;《Journal of Power Sources》;全文 * |
| 玻璃纤维织物一维面内渗透率的实验研究;邱中琦;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;全文 * |
| 阀控密封铅酸蓄电池用改性AGM隔膜的研究;魏廷权;魏杰;胡信国;褚德威;;蓄电池(03);全文 * |
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