GB/T 45332-2025 in English
VALIDProton exchange membrane for hydrogen production via water electrolysis
- Issued on:2025-02-28
- Implemented on:2025-09-01
- File Format:PDF
- Delivery:Via email within 5 business days
$364.00
《GB/T 45332-2025电解水制氢用质子交换膜》由TC382（全国分离膜标准化技术委员会）归口，主管部门为国家标准委。
Introduction
Interpretation of the core content of the standard
GB/T 45332-2025 is my country's first national standard specifically for proton exchange membranes used in hydrogen production by water electrolysis. It systematically regulates the application requirements of proton exchange membranes in the field of hydrogen energy for the first time. The standard innovatively divides membrane products into two major systems: non-enhanced membranes (Class I-III) and enhanced membranes, and establishes a complete evaluation system including 8 major performance indicators.
Comparison of key technical indicators
| Performance parameters | Requirements for non-reinforced membrane | Requirements for reinforced membrane | Test methods |
|---|---|---|---|
| Thickness deviation (μm) | Class I ±5/Class II ±10 | ±5 | Chapter 6.3 Mechanical thickness measurement method |
| Tensile strength (MPa) | ≥25.0 | ≥30.0 | GB/T 20042.3 |
| Proton conductivity (S/cm) | ≥0.08 (horizontal/normal) | Chapter 6.7-6.8 Electrochemical method | |
| Hydrogen permeability | ≤0.80×10⁻³ | ≤0.10×10⁻³ | GB/T 20042.3 |
Test method innovation
Standard first bidirectional quantum conductivity test system:
- The
- planar conductivity test uses a gold-plated electrode system (Figure 1), requiring the impedance measurement accuracy to reach 0.05mV at 80°C. The
- normal conductivity test constructs a temperature and humidity controllable chamber (Figure 3) to achieve accurate measurement under 100%RH conditions.
The swelling rate test innovatively introduces three-dimensional (TD/MD/Z) dimensional change monitoring and uses 0.5mol/L sulfuric acid solution to simulate actual working conditions.
Implementation Suggestions
Manufacturers
- Establish an online thickness monitoring system to ensure ±3μm average deviation control
- Strengthen the swelling rate process control, and it is recommended to adopt pre-expansion treatment technology
Testing Agency
- Equipped with a fastening device with a torque accuracy of 0.001N·m
- Establish a standard test environment of 80℃/100%RH
Technology Evolution Analysis
Compared with GB/T 20042.3-2022 fuel cell membrane standard, this standard:
- Hydrogen permeability requirement increased by 50%
- Added Puncture strength indicator (≥0.04N/μm)
- Test temperature increased from 70℃ to 80℃
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