A thermochemical water-splitting process all reactions of which operate at relatively low temperatures and high efficiencies, and in which relatively inexpensive materials and processing methods are made possible. The component includes two major surfaces defining respective front and rear sides of the component, and the rear side of the component is preferably the mirror image of the front side. Another circuit senses the source voltage of the individual device within the array. A Parylene coating is disposed within the slit of the septum, the Parylene coating has a thickness of between approximately 0. A fastener through one of the sections into the other prevents the assembled sprocket sections from sliding apart along the slide tracks. Functional groups include, but are not limited to, an amine, a cyclic amine, a nitrogen-containing heterocycle, an ester, an acid, an alcohol, a quaternary ammonium, a quaternary phosphonium, a sulfonium, a sulfonate or a phosphonate group.