Water vapor electrolysis.
D004572:Electrolysis; D005782:Gels; D008567:Membranes, Artificial; D010100:Oxygen; D011145:Polyvinyls; D012822:Silicon Dioxide; D013464:Sulfuric Acids; D014867:Water
D005782:Gels; D008567:Membranes, Artificial; D011145:Polyvinyls; D013464:Sulfuric Acids; D014867:Water; D012822:Silicon Dioxide; D010100:Oxygen