GB/T 20042.6-2024 PDF English
US$550.00 · In stock · Download in 9 secondsGB/T 20042.6-2024: Proton exchange membrane fuel cell - Part 6: Test method of bipolar plate properties Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 20042.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 20042.6-2024 | English | 550 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Proton exchange membrane fuel cell - Part 6: Test method of bipolar plate properties
| Valid |
| GB/T 20042.6-2011 | English | 305 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Proton exchange membrane fuel cell - Part 6: Test method for bipolar plate properties
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 20042.6-2024
GB/T 20042.6-2024: Proton exchange membrane fuel cell - Part 6: Test method of bipolar plate properties
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT20042.6-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.070
CCS K 82
Replacing GB/T 20042.6-2011
Proton Exchange Membrane Fuel Cell – Part 6.Test Method
of Bipolar Plate Properties
Issued on. MARCH 15, 2024
Implemented on. OCTOBER 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
Introduction... 6
1 Scope... 7
2 Normative References... 7
3 Terms and Definitions... 8
4 Flexural Strength Test of Bipolar Plate Materials... 9
5 Density Test of Bipolar Plate Materials... 11
6 Resistance Test of Bipolar Plate Material... 12
7 Corrosion Current Density Test of Bipolar Plate Materials... 16
8 Area Utilization Rate Test of Bipolar Plate Component... 20
9 Thickness Uniformity Test of Bipolar Plate Component... 21
10 Groove Depth Uniformity Test of Bipolar Plate Component... 24
11 Flatness Test of Bipolar Plate Components... 26
12 Relative Flatness Test of Bipolar Plate Component... 27
13 Contact Resistance Test of Bipolar Plate Component... 29
14 Air Tightness Test of Bipolar Plate Component... 29
15 Water Contact Angle Test of Bipolar Plate Component... 33
16 Coating Thickness Test of Bipolar Plate Component... 34
17 Coating Bonding Strength Test of Bipolar Plate Component... 35
18 Corrosion Current Density Test of Bipolar Plate Component... 36
19 Specific Heat Capacity Test of Bipolar Plate Component... 37
20 Thermal Conductivity Test of Bipolar Plate Component... 38
21 Precipitation Ion Composition and Concentration Test for Bipolar Plate Component
... 39
22 Applicability of Test Indicators, Test Preparation and Test Report... 41
Appendix A (Normative) Applicability of Test Indicators... 42
Appendix B (Informative) Test Preparation... 43
Appendix C (Informative) Test Report... 44
Bibliography... 47
1 Scope
This Document specifies the test methods for the flexural strength, density, resistance and
corrosion current density, etc. of bipolar plate materials for proton exchange membrane fuel
cells; and the test methods for the area utilization, thickness uniformity, groove depth uniformity,
flatness, relative flatness, contact resistance, air tightness, etc. of bipolar plate components.
This Document is applicable to various types of bipolar plate materials and components for
proton exchange membrane fuel cells.
NOTE. The definitions of bipolar plate materials and bipolar plate components are as follows.
a) Bipolar plate material. Plate material in the same state as the finished bipolar plate material;
b) Bipolar plate component. Finished bipolar plate in the same state as the used state.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
GB/T 230.2 Metallic materials – Rockwell hardness test – Part 2.Verification and
calibration of testing machines and indenters
GB/T 1958 Geometrical product Specifications (GPS) - Geometrical tolerance -
Verification prescription
GB/T 4472-2011 Determination of density and relative density for chemical products
GB/T 13465.2 Test method of impermeable graphite materials - Part 2.Flexure strength
GB/T 19466.4-2016 Plastics - Differential scanning calorimetry (DSC) - Part 4.
Determination of specific heat capacity
GB/T 20042.1-2017 Proton exchange membrane fuel cell - Part 1.Terminology
GB/T 20428-2006 Granite surface plates
GB/T 22588-2008 Determination of thermal diffusivity or thermal conductivity by the
flash method
GB/T 28634 Microbeam analysis - Electron probe microanalysis - Quantitative point
analysis for bulk specimen using wavelength dispersive X-ray spectroscopy
3 Terms and Definitions
For the purposes of this Document, the terms and definitions given in GB/T 20042.1-2017 and
the following apply.
3.1 Corrosion current density
The current value that is generated by the electrochemical damage caused by the corrosion
potential on the surface of the bipolar plate material or component per unit area in the simulated
fuel cell operating environment.
3.2 Interfacial contact resistance
The resistance that is generated by the contact between the two material detection areas.
3.3 Through-plane resistivity
The resistivity value of the bipolar plate material in the direction perpendicular to the plate
surface.
NOTE. The unit of through-plane resistivity is milliohm centimeters (mΩ·cm).
3.4 In-plane resistivity
The resistivity value of the bipolar plate material in the direction parallel to the plate surface.
Note. The unit of in-plane resistivity is milliohm centimeters (mΩ·cm).
3.5 Flexural strength
The maximum bending stress that a bipolar plate can withstand during bending under specified
conditions.
3.6 Flatness
The sum of the distances from the highest peak and the lowest valley on the surface of the
measured part of the bipolar plate to the fitting plane under the specified pressure.
4 Flexural Strength Test of Bipolar Plate Materials
4.1 Test instruments
The test instruments include the following equipment and tools.
4.2 Preparation of the sample
4.2.1 The width of the sample is 25mm±0.5mm and the length is 60mm±1mm. The sample size
can also be determined by negotiation between the two parties. The deviation between the
thickness of the sample on each part and the average thickness should not exceed 2%; and the
deviation between the width and the average width shall not exceed 3%. The cross section of
the sample shall be rectangular and without chamfers.
4.2.2 The number of samples is 5 (ensure 3 valid values to be obtained); and there shall be no
wrinkles, scratches or damage.
4.2.3 For samples from different batches, they shall be sampled separately.
4.3 Test methods
4.3.1 Measure the width and thickness 3 times along the length of the sample; and take the
average value respectively.
4.3.2 Adjust the support span to 40mm±0.3mm; place the prepared sample symmetrically on
the two supports; and make the test machine pressure head and support axis perpendicular to
the sample; and test the sample bending strength using the three-point bending method in
accordance with GB/T 13465.2.
4.3.3 The pressure head applies load to the sample uniformly at a loading speed of 1 mm/min
until the sample breaks; and the breaking load value is read.
4.4 Data processing
The flexural strength of the sample is calculated according to Formula (1).
5 Density Test of Bipolar Plate Materials
5.1 Test instrument
The test instrument includes the following equipment and tools.
5.2 Preparation of sample
5.2.1 The sample shape is square (5cm×5cm) and the area is 25cm2; the sample shape and size
can also be negotiated by both parties to the test.
5.2.2 Clean the sample surface with ethanol or other solvents and dry it.
5.2.3 Remove grease from the metal wire.
5.3 Test methods
The test is carried out according to the method specified in 4.2.3 of GB/T 4472-2011 for
hydrostatic weighing method.
5.4 Data processing
The density data of the sample is processed according to the method specified in 4.2.3.4 of
GB/T 4472-2011.
6 Resistance Test of Bipolar Plate Material
6.1 Test instrument
The test instrument includes the following equipment and tools.
6.2 Preparation of sample
6.2.1 The sample shape is square (5cm×5cm) and the area is 25cm2; the sample shape and size
can also be negotiated by the test parties.
6.2.2 The number of samples is 5 (ensure 3 valid values to be obtained); and there shall be no
wrinkles, scratches or damage.
6.2.3 For samples from different batches, they should be sampled separately.
6.3 Test methods
6.3.1 In-plane resistivity test
6.3.1.1 The zero point of the tester shall be calibrated before each test. The influence of sample
deformation, dust on the sample surface and other factors shall be avoided during the test.
6.3.2 Through-plane resistivity test
6.3.2.1 Use a low-resistance meter to test the resistance value; and the test electrode is a gold-
plated copper electrode. The connection method between the gold-plated copper electrode and
the wire is determined by negotiation between the two test parties to minimize the influence of
the low-resistance meter on the test results.
6.3.2.2 Use a thickness gauge to measure the sample thickness; and the measurement positions
shall be no less than 3.
6.3.3 Contact resistance test
6.3.3.1 Use a low resistance meter to test the resistance value; and the test electrode is a gold-
plated copper electrode. The connection method between the gold-plated copper electrode and
the wire is determined by negotiation between the two test parties to minimize the impact of
the low resistance meter on the test results.
6.3.3.4 Use new carbon paper of the same specification for each test; and the carbon paper
manufacturer and model shall be indicated in the test report.
6.4 Data processing
6.4.1 The in-plane resistivity of the sample is calculated according to Formula (2).
6.4.2 The through-plane resistivity of the sample is calculated according to Formulas (3) and (4).
6.4.3 The contact resistance of the sample is calculated according to Formula (5).
7 Corrosion Current Density Test of Bipolar Plate Materials
7.1 Test instrument
The test instrument includes the following equipment and tools.
7.2 Preparation of sample
7.2.1 Cut the test material of a certain size as the sample, and ensure that the effective area of
the sample is at least 1cm2.
7.2.2 Clean the sample surface with ethanol or other solvents; and dry it in a nitrogen
environment at 80℃ for 10min.
7.2.3 Seal the sample according to the opening shape on the side of the electrolytic cell to ensure
that there is no leakage during the test.
7.2.4 The number of samples is 5 (ensure 3 valid values to be obtained); and there shall be no
wrinkles, scratches or damage.
7.2.5 For samples from different batches, they should be sampled separately.
7.3 Test methods
7.3.1 Open circuit potential test
7.3.2 Dynamic potential test
7.3.3 Constant potential test
7.3.3.1 Test with the sample as the working electrode, the saturated calomel electrode as the
reference electrode, and the platinum sheet or platinum mesh as the auxiliary electrode. The
reference electrode type can also be determined by negotiation between the two test parties;
and the test potential is converted accordingly according to the used reference electrode type.
7.4 Data processing
The corrosion current density of the sample is calculated according to Formula (6).
8 Area Utilization Rate Test of Bipolar Plate Component
8.1 Test instrument
The test instrument includes a contour measuring instrument with an accuracy of 5μm.
8.2 Preparation of Sample
8.2.1 The sample is a complete bipolar plate with the number of 5 (ensure 3 valid values to be
obtained); and there shall be no wrinkles, scratches or damage.
8.2.2 For samples from different batches, they should be sampled separately.
8.3 Test methods
8.3.1 Test at 25℃±2℃.
8.3.2 Use a transparent plate to apply a certain pressure to flatten the sample. The size of the
transparent plate is larger than the sample size. The material, thickness and pressure of the
transparent plate are determined by negotiation between the two test parties.
8.3.5 The membrane electrode manufacturer and model shall be indicated in the test report.
8.4 Data processing
The area utilization rate of the sample is calculated according to Formula (7).
9 Thickness Uniformity Test of Bipolar Plate Component
9.1 Test instrument
The test instrument includes the following equipment and tools.
9.2 Preparation of sample
9.2.1 The sample is a complete bipolar plate, with 5 samples (ensure 3 valid values to be
obtained); and shall be free of wrinkles, scratches and damage.
9.2.2 For samples from different batches, they shall be sampled separately.
9.3 Test methods
9.3.1 Test at 25℃±2℃.
9.3.2 The zero point of the thickness gauge shall be calibrated before each measurement; and
its zero point shall be rechecked after each sample measurement.
9.3.7 At the sample measurement position, use a thickness gauge to measure the thickness of
the sealing groove edge or ridge on both sides of the sealing groove or flow field channel; and
take the value on the larger side of the measurement value as the thickness of the sample.
9.4 Data processing
9.4.1 Data processing is performed on the thickness uniformity of the sample sealing area and
active area, respectively.
9.4.2 The thickness uniformity of the sample is expressed by the average thickness, thickness
9.4.3 The average thickness of the sample is calculated according to Formula (8).
9.4.4 The thickness range of the sample is calculated according to Formula (9).
9.4.5 The standard deviation of the sample thickness is calculated according to Formula (10).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 20042.6-2024 be delivered?Answer: The full copy PDF of English version of GB/T 20042.6-2024 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 20042.6-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 20042.6-2024_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 20042.6-2024 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 20042.6-2024?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20042.6-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 20042.6-2024?A step-by-step guide to download PDF of GB/T 20042.6-2024_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 20042.6-2024".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|