Today, oxygen is mostly produced by cryogenic air distillation (CDA). In other words, the air is filtered, compressed, and liquefied and then separated into its various components (nitrogen, oxygen and argon) thanks to their different boiling points. Another alternative are systems based on PSA (Pressure Swing Adsorbers) in which the air is circulated through filters that separate the oxygen from the other components of the air.The exclusive production of oxygen from electrolysis has not been considered until now, due to its high energy requirements since it costs less to extract oxygen from...