The chemical stability of diaphragms used in water electrolysis for hydrogen production requires rigorous testing, including re-testing after prolonged use.
The diaphragm material should be readily available and must not undergo embrittlement or decomposition during operation.
The diaphragm should possess necessary physical properties, such as high permeability, high fluoride ion concentration, low electrical resistivity, and low oxidative activity.
Diaphragm materials must comply with safety and environmental standards during production to ensure no environmental pollution during use, and they must also undergo safety and reliability testing.