While we will deploy whatever technology best meets the needs of a particular project, the core technology for our planned product line of Regenerative Fuel Cell (RFC) systems is Proton Exchange Membrane, or PEM, technology. This technology uses a solid polymer membrane as the system electrolyte. This unique material works like battery acid but is inert and safe to touch. It functions to transport hydrogen ions, or protons to enable either electrolysis or fuel cell reactions.
PEM Electrolysis Process
This animation depicts the charge, or electrolysis mode. This process splits water into hydrogen and oxygen and can produce hydrogen directly at pressure without mechanical compression. As shown here, water, H2O, enters the cell and is split at the surface of the membrane to form protons, electrons and gaseous oxygen. The gaseous oxygen leaves the cell while the protons move through the membrane under the influence of the applied electric field and electrons move through the external circuit. The protons and electrons combine at the opposite surface to form pure gaseous hydrogen.
PEM Fuel Cell Process
The fuel cell uses the reverse process. Here, hydrogen and oxygen (from the air) are applied to the cell. The hydrogen splits to release its electrons to the external circuit and provide power to the load. The protons, move across the membrane, attracted by the oxygen potential, and combine with the oxygen to form water at the opposite electrode surface.
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