In “Proton Exchange Membrane” or “Polymer Electrolyte Membrane” (PEM) electrolysis, a solid polymer electrolyte is used as a membrane. When an electrical voltage is applied, the water splits up. Oxygen, positively charged H+ ions (= protons) and free electrons are then produced. The H+ ions diffuse through the membrane to the cathode and react with the electrons to form hydrogen.
The electrolysis only requires a drinking water and electricity connection. Then the electrolysis is ready for operation and produces high-purity hydrogen over the entire power spectrum from 0-100% nominal power.
The areas of application for hydrogen are very diverse. It is used as energy storage for e.g. renewable energies, in power to gas plants, in industry and in the mobility sector. You can receive more information here: ohs.energy/en/application-areas