CN116625922A - Detection tool device and detection method for GDL corrosion resistance of fuel cell - Google Patents
Detection tool device and detection method for GDL corrosion resistance of fuel cell Download PDFInfo
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- CN116625922A CN116625922A CN202310372775.0A CN202310372775A CN116625922A CN 116625922 A CN116625922 A CN 116625922A CN 202310372775 A CN202310372775 A CN 202310372775A CN 116625922 A CN116625922 A CN 116625922A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 31
- 230000007797 corrosion Effects 0.000 title claims abstract description 31
- 239000000446 fuel Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 31
- 229910052799 carbon Inorganic materials 0.000 claims description 31
- 238000002484 cyclic voltammetry Methods 0.000 claims description 18
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 13
- 239000012028 Fenton's reagent Substances 0.000 claims description 13
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- MINVSWONZWKMDC-UHFFFAOYSA-L mercuriooxysulfonyloxymercury Chemical compound [Hg+].[Hg+].[O-]S([O-])(=O)=O MINVSWONZWKMDC-UHFFFAOYSA-L 0.000 claims description 3
- 229910000371 mercury(I) sulfate Inorganic materials 0.000 claims description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 25
- 238000007254 oxidation reaction Methods 0.000 abstract description 25
- 238000002474 experimental method Methods 0.000 abstract description 12
- 150000003254 radicals Chemical class 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- -1 iron ion Chemical class 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The application provides a corrosion resistance detection tool device of a GDL of a fuel cell, which is characterized by comprising the following components: the counter electrode, the reference electrode and the tool mounting piece to be tested are sequentially arranged at intervals; a space is arranged between the counter electrode and the workpiece mounting piece to be tested, and electrolyte is placed in the space; the mounting part of the tool to be tested is provided with a mounting clamping hole, and a conductive part is embedded in the mounting part of the tool to be tested and positioned at the mounting clamping hole; the application can directly use the free radical reagent to evaluate the oxidation corrosion of the battery, thereby reducing the experimental evaluation time and improving the scientific research efficiency; the fuel cell test bench is not required, so that the experiment cost is reduced; the double-channel test can be performed, and the experimental efficiency is improved.
Description
Technical Field
The application relates to the technical field of pile detection, in particular to a detection tool device and a detection method for the corrosion resistance of a GDL of a fuel cell.
Background
The electric pile is used as the heart of the fuel cell engine system, is a power source of the fuel cell engine, is the core of cost and technology in the whole fuel cell industry chain, and is mainly formed by stacking a plurality of layers of membrane electrodes and bipolar plates. The membrane electrode (GDL) is used as a core component and is composed of a proton exchange membrane, a catalyst and a gas diffusion layer, wherein the gas diffusion layer is mainly made of carbon paper and is positioned at two ends of the membrane electrode, and the membrane electrode is used for supporting the proton exchange membrane, coating the catalyst and connecting the membrane electrode and the bipolar plate. The fuel cell carbon paper is manufactured by taking chopped carbon fibers as raw materials, and has the characteristics of good mechanical strength, light weight, high porosity, excellent air permeability, excellent conductivity, high temperature resistance, oxidation resistance, corrosion resistance and the like.
As the existing fuel cell has higher oxidation potential and the free radical generated by the reaction has stronger oxidation effect when in operation, the corrosion to the membrane electrode material can be generated. This condition also oxidizes the gas diffusion layer, i.e., the microporous layer of the carbon paper, causing failure and structural degradation of the associated materials, thereby affecting the operating life of the fuel cell. Therefore, detecting the service life of the carbon paper is a key index for evaluating the operating life of the electric pile, namely, evaluating the fuel cell, and the problem of the service life of the electric pile is more and more remarkable along with the increasing demand of commercial vehicles on the fuel cell.
However, since carbon paper is not an electrochemical reaction component, it is difficult to evaluate it by conventional electrochemical tests. At present, the corrosion condition of the carbon paper is evaluated mainly by methods of electron microscope observation, conductivity test, mass transfer effect test and the like, the test means is complex, and the test result time is long.
Disclosure of Invention
Aiming at the problem that electrochemical testing of carbon paper is difficult to realize in the prior art, the application aims to provide a detection tool device and a detection method for the corrosion resistance of a GDL of a fuel cell.
In order to achieve the above purpose, the present application provides the following technical solutions:
a corrosion resistance detection tooling device for a fuel cell GDL, comprising: the counter electrode, the reference electrode and the tool mounting piece to be tested are sequentially arranged at intervals; a space is arranged between the counter electrode and the workpiece mounting piece to be tested, and electrolyte is placed in the space;
the mounting device comprises a mounting clamping hole, a mounting clamping hole and a conductive piece, wherein the mounting clamping hole is formed in the mounting piece of the tool to be tested, and the conductive piece is embedded in the mounting clamping hole.
Further, the tool mounting piece to be tested is made of insulating materials.
Further, the reference electrode is any one of a saturated calomel electrode, an Ag/AgCl electrode, a mercurous sulfate electrode and a platinum wire.
Further, the counter electrode is a platinum sheet.
Further, the cross section of the opening shape of the installation clamping hole is of a T-shaped structure.
Further, the counter electrode is provided in a square sheet shape.
Further, the to-be-tested tool mounting piece is rectangular.
Further, the counter electrode is taken as an axle center, and a reference electrode and a tool mounting piece to be tested are arranged in a space in a mirror image mode
As a preferred mode of the present application, a method for detecting corrosion resistance of a GDL for a fuel cell, comprising the steps of:
s1: fixing carbon paper in a tool mounting piece to be tested; performing cyclic voltammetry between a counter electrode and a reference electrode, and measuring an electric double layer capacitor C1 according to C= (iΔt)/V;
s2: preparing Fenton reagent; the concentration of the reagent is 10-30% hydrogen peroxide, and the ferrous ion content is 3-30 ppm;
s3: immersing carbon paper in Fenton reagent; heating to 10-40 ℃, soaking for 48 hours, taking out, washing with deionized water, and drying for later use;
s4: placing the dried carbon paper into a fixed conductor for cyclic voltammetry, wherein the measurement voltage is 0.05-1.1V during the cyclic voltammetry, the scanning speed is 20mV/s, the measurement is 20 circles, and an electric double layer capacitor C2 is calculated;
s5: the ratio epsilon=c2/C1 of the electric double layer was calculated.
Compared with the prior art, the application has the following beneficial effects:
the application can directly use the free radical reagent to evaluate the oxidation corrosion of the battery, thereby reducing the experimental evaluation time and improving the scientific research efficiency;
according to the application, a fuel cell test bench is not required, so that the experimental cost is reduced;
the application can perform double-channel test and improve experimental efficiency.
Drawings
Other features, objects and advantages of the application will become more apparent from reading of the detailed description made with reference to non-limiting embodiments.
Detailed Description
The application is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the application easy to understand.
A corrosion resistance detection tooling device for a GDL of a fuel cell developed by the applicant, comprising: the counter electrode, the reference electrode and the tool mounting piece to be tested are sequentially arranged at intervals; a space is arranged between the counter electrode and the workpiece mounting piece to be tested, and electrolyte is placed in the space; wherein the electrolyte is preferably 0.05M sulfuric acid; the counter electrode is connected with a working electrode clamp, the reference electrode is connected with a reference electrode clamp, and the workpiece mounting piece to be tested is connected with an auxiliary electrode clamp;
and in actual operation, in order to provide localized measurement to improve measuring accuracy, consequently carry out the ration setting to measuring distance, need the reference electrode to immerse electrolyte and be close to the frock installed part that awaits measuring.
The installation card hole has been seted up on the frock installed part that awaits measuring, in the frock installed part that awaits measuring and be located installation card hole department and inlay and be equipped with electrically conductive piece, the size and the structure of installation card hole are adjusted to be in contact with the carbon paper that is located on the frock installed part that awaits measuring promptly, in order to realize effectively fixed to the carbon paper, and solved the technical problem that the material that awaits measuring produced deformation in the test process, in actual operation, the material of selecting electrically conductive piece is preferably copper, gold, silver or the like, this embodiment is preferably made with copper, guarantee the conductivity.
The outer surface of the tool mounting piece to be tested is made of PTFE insulating materials so as to inhibit electric exchange between carbon paper and adjacent structures, and the insulating arrangement of the tool mounting piece to be tested can reduce the strain of the carbon paper, and the material is compatible in electrolytic cell liquid so as to maintain the stability of experimental data.
The reference electrode is any one of a saturated calomel electrode, an Ag/AgCl electrode, a mercurous sulfate electrode and a platinum wire, and is preferably a saturated calomel electrode in the embodiment.
The counter electrode is a platinum sheet.
The cross section of the opening shape of the mounting clamping hole is of a T-shaped structure, so that the effective mounting and clamping operation of the carbon paper can be realized, and the filling performance can be realized.
The counter electrode is arranged in a square sheet shape;
the tool mounting piece to be tested is rectangular, so that operation is simplified.
Example 1:
the corrosion resistance detection method of the GDL of the fuel cell comprises the following steps of adopting the corrosion resistance detection tool device:
s1: fixing carbon paper in a tool mounting piece to be tested; performing cyclic voltammetry between a counter electrode and a reference electrode, and measuring an electric double layer capacitor C1 according to C= (iΔt)/V;
s2: preparing Fenton reagent; the concentration of the reagent was 10％The hydrogen peroxide with the ferrous ion content of 10ppm, wherein the hydrogen peroxide can be rapidly decomposed by selecting the too concentrated ferrous ion concentration, and the experiment cannot be implemented; in addition, in consideration of practical operation and consumable cost, the applicant uses hydrogen peroxide as a consumable, and 10% of hydrogen peroxide is the concentration of the optimal completed experiment;
s3: immersing carbon paper in Fenton reagent; heating to 40 ℃, soaking for 48 hours, taking out, cleaning with deionized water, and drying for later use;
s4: placing the dried carbon paper into a fixed conductor, performing cyclic voltammetry test, wherein the measurement voltage is 0.05-1.1V during the cyclic voltammetry test, the sweeping speed is 20mV/s, and the measurement is 20 circles, so as to calculate an electric double layer capacitor C2;
s5: the ratio epsilon=c2/C1 of the electric double layer was calculated.
The test basis of the application is that the capacitance values C1 and C2 before oxidation and after oxidation can be obtained according to the i and V values in the CV diagram, and the ratio epsilon of the capacitance values C1 and C2 after oxidation can be obtained, and after oxidation, the abundant oxygen-containing functional groups can cause the increase of hydrophilicity, so that the measured capacitance value is improved, and the oxidation degree can be detected through capacitance change.
Example 2:
the corrosion resistance detection method of the GDL of the fuel cell comprises the following steps of adopting the corrosion resistance detection tool device:
s1: fixing carbon paper in a tool mounting piece to be tested; performing cyclic voltammetry between a counter electrode and a reference electrode, and measuring an electric double layer capacitor C1 according to C= (iΔt)/V;
s2: preparing Fenton reagent; the concentration of the reagent is 30% of hydrogen peroxide, the ferrous ion content is 30ppm, wherein the hydrogen peroxide can be rapidly decomposed by selecting the too concentrated ferrous ion concentration, and the experiment cannot be implemented; in addition, in consideration of practical operation and consumable cost, the applicant uses hydrogen peroxide as a consumable, and 10% of hydrogen peroxide is the concentration of the optimal completed experiment;
s3: immersing carbon paper in Fenton reagent; heating to 40 ℃, soaking for 48 hours, taking out, cleaning with deionized water, and drying for later use;
s4: placing the dried carbon paper into a fixed conductor, performing cyclic voltammetry test, wherein the measurement voltage is 0.05-1.1V during the cyclic voltammetry test, the sweeping speed is 20mV/s, and the measurement is 20 circles, so as to calculate an electric double layer capacitor C2;
s5: the ratio epsilon=c2/C1 of the electric double layer was calculated.
The test basis of the application is that the capacitance values C1 and C2 before oxidation and after oxidation can be obtained according to the i and V values in the CV diagram, and the ratio epsilon of the capacitance values C1 and C2 after oxidation can be obtained, and after oxidation, the abundant oxygen-containing functional groups can cause the increase of hydrophilicity, so that the measured capacitance value is improved, and the oxidation degree can be detected through capacitance change.
Example 3:
the corrosion resistance detection method of the GDL of the fuel cell comprises the following steps of adopting the corrosion resistance detection tool device:
s1: fixing carbon paper in a tool mounting piece to be tested; performing cyclic voltammetry between a counter electrode and a reference electrode, and measuring an electric double layer capacitor C1 according to C= (iΔt)/V;
s2: preparing Fenton reagent; the concentration of the reagent is 10 hydrogen peroxide, the ferrous ion content is 30ppm, wherein the hydrogen peroxide can be rapidly decomposed by selecting the too concentrated ferrous ion concentration, and experiments cannot be implemented; in addition, in consideration of practical operation and consumable cost, the applicant uses hydrogen peroxide as a consumable, and 10% of hydrogen peroxide is the concentration of the optimal completed experiment;
s3: immersing carbon paper in Fenton reagent; heating to 40 ℃, soaking for 48 hours, taking out, cleaning with deionized water, and drying for later use;
s4: placing the dried carbon paper into a fixed conductor, performing cyclic voltammetry test, wherein the measurement voltage is 0.05-1.1V during the cyclic voltammetry test, the sweeping speed is 20mV/s, and the measurement is 20 circles, so as to calculate an electric double layer capacitor C2;
s5: the ratio epsilon=c2/C1 of the electric double layer was calculated.
The test basis of the application is that the capacitance values C1 and C2 before oxidation and after oxidation can be obtained according to the i and V values in the CV diagram, and the ratio epsilon of the capacitance values C1 and C2 after oxidation can be obtained, and after oxidation, the abundant oxygen-containing functional groups can cause the increase of hydrophilicity, so that the measured capacitance value is improved, and the oxidation degree can be detected through capacitance change.
Example 3:
the corrosion resistance detection method of the GDL of the fuel cell comprises the following steps of adopting the corrosion resistance detection tool device:
s1: fixing carbon paper in a tool mounting piece to be tested; performing cyclic voltammetry between a counter electrode and a reference electrode, and measuring an electric double layer capacitor C1 according to C= (iΔt)/V;
s2: preparing Fenton reagent; the concentration of the reagent is hydrogen peroxide with 15, the ferrous ion content is 15ppm, wherein the hydrogen peroxide can be rapidly decomposed by selecting the too concentrated ferrous ion concentration, and the experiment cannot be implemented; in addition, in consideration of practical operation and consumable cost, the applicant uses hydrogen peroxide as a consumable, and 10% of hydrogen peroxide is the concentration of the optimal completed experiment;
s3: immersing carbon paper in Fenton reagent; heating to 40 ℃, soaking for 48 hours, taking out, cleaning with deionized water, and drying for later use;
s4: placing the dried carbon paper into a fixed conductor, performing cyclic voltammetry test, wherein the measurement voltage is 0.05-1.1V during the cyclic voltammetry test, the sweeping speed is 20mV/s, and the measurement is 20 circles, so as to calculate an electric double layer capacitor C2;
s5: the ratio epsilon=c2/C1 of the electric double layer was calculated.
The reason why the applicant selects the hydrogen peroxide with the concentration of 10% -30% is as follows: the highest concentration of the hydrogen peroxide sold in the market at present is 30%, and a large amount of hydrogen peroxide is consumed, but if the hydrogen peroxide is configured to be lower than 10%, the hydrogen peroxide is not enough to be used; ferrous ion is used as a catalyst, after the component of the ferrous ion is less than 3ppm, the carbon paper is difficult to react to cause the experiment to be difficult to test, hydrogen peroxide can be quickly reacted to be deflated after the content of the ferrous ion is increased, the iron ion is dangerous, the iron ion can be quickly consumed to be depleted, and the Fenton reagent can be kept at room temperature during the experiment, if the iron ion is heated to high temperature, the reagent can be unstable, and the accuracy of experimental data is affected.
The test basis of the application is that the capacitance values C1 and C2 before oxidation and after oxidation can be obtained according to the i and V values in the CV diagram, and the ratio epsilon of the capacitance values C1 and C2 after oxidation can be obtained, and after oxidation, the abundant oxygen-containing functional groups can cause the increase of hydrophilicity, so that the measured capacitance value is improved, and the oxidation degree can be detected through capacitance change.
The applicant finds that another group of mounting pieces are added on the other side of the counter electrode platinum sheet in experiments, so that two samples can be tested simultaneously, the testing efficiency is improved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered by the scope of the claims of the present application.
Claims (9)
1. The utility model provides a corrosion resistance detects tool equipment of fuel cell GDL which characterized in that includes: the counter electrode, the reference electrode and the tool mounting piece to be tested are sequentially arranged at intervals; a space is arranged between the counter electrode and the workpiece mounting piece to be tested, and electrolyte is placed in the space;
the mounting device comprises a mounting clamping hole, a mounting clamping hole and a conductive piece, wherein the mounting clamping hole is formed in the mounting piece of the tool to be tested, and the conductive piece is embedded in the mounting clamping hole.
2. The tool device for detecting the corrosion resistance of the GDL of a fuel cell according to claim 1, wherein said tool mounting member to be detected is made of an insulating material.
3. The tool device for detecting the corrosion resistance of the GDL of the fuel cell according to claim 2, wherein the reference electrode is any one of a saturated calomel electrode, an Ag/AgCl electrode, a mercurous sulfate electrode and a platinum wire.
4. A corrosion resistance testing fixture device for a GDL for a fuel cell according to claim 3, wherein the counter electrode is platinum metal.
5. The apparatus for detecting the corrosion resistance of a GDL for a fuel cell according to claim 2, wherein the cross section of the opening shape of the mounting hole is a T-shaped structure.
6. The tool device for detecting the corrosion resistance of the GDL of a fuel cell according to claim 1, wherein a reference electrode and a tool mounting member to be detected are mirror-image-mounted in a space with the counter electrode as an axis.
7. The apparatus for detecting the corrosion resistance of a GDL for a fuel cell according to claim 6, wherein the counter electrode is provided in a square sheet shape.
8. The fuel cell GDL corrosion resistance testing fixture of claim 5, wherein the fixture mounting member to be tested is rectangular.
9. A method for detecting the corrosion resistance of a GDL for a fuel cell, comprising the steps of using the tool device for detecting the corrosion resistance according to any one of claims 1 to 8, comprising the steps of:
s1: fixing carbon paper in a tool mounting piece to be tested; performing cyclic voltammetry between a counter electrode and a reference electrode, and measuring an electric double layer capacitor C1 according to C= (iΔt)/V;
s2: preparing Fenton reagent; the concentration of the reagent is 5-30% hydrogen peroxide, and the ferrous ion content is 3-30 ppm;
s3: immersing carbon paper in Fenton reagent; heating to 10-40 ℃, soaking for 48 hours, taking out, washing with deionized water, and drying for later use;
s4: placing the dried carbon paper into a fixed conductor for cyclic voltammetry, wherein the measurement voltage is 0.05-1.1V during the cyclic voltammetry, the scanning speed is 20mV/s, the measurement is 20 circles, and an electric double layer capacitor C2 is calculated;
s5: the ratio epsilon=c2/C1 of the electric double layer was calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310372775.0A CN116625922A (en) | 2023-04-10 | 2023-04-10 | Detection tool device and detection method for GDL corrosion resistance of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310372775.0A CN116625922A (en) | 2023-04-10 | 2023-04-10 | Detection tool device and detection method for GDL corrosion resistance of fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN116625922A true CN116625922A (en) | 2023-08-22 |
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|---|---|---|---|
| CN202310372775.0A Pending CN116625922A (en) | 2023-04-10 | 2023-04-10 | Detection tool device and detection method for GDL corrosion resistance of fuel cell |
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| CN (1) | CN116625922A (en) |
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- 2023-04-10 CN CN202310372775.0A patent/CN116625922A/en active Pending
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