The mobile generates O2 within the anode and H2 in the cathode; a separator material typically made of ceramics which include zirconium oxide retains the gases from mixing whilst allowing h2o and ions to move freely. Norton Rose Fulbright also points to speciality vehicles, like forklifts, for which Plug serves https://pem-electrolyser80000.bloginder.com/37727568/everything-about-hydrogen-electrolyzer