Ultrahigh-pressure Electrolysis
Ultrahigh-pressure electrolysis is high-pressure electrolysis operating at 5000–10000 psi. At ultra-high pressures the water solubility and cross-permeation across the membrane of H2 and O2 is affecting hydrogen purity, modified PEMs are used to reduce cross-permeation in combination with catalytic H2/O2 recombiners to maintain H2 levels in O2 and O2 levels in H2 at values compatible with hydrogen safety requirements.
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