Hydrion

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[edit] HYDRion

HYDRion is a catalyst coated NAFION membrane for water electrolysis, invented by Stephen Grot of Ion Power in 2007. The catalysts are specifically selected for water splitting and Pt and Iridium based catalysts are used to coat the membrane. Thicker membranes are used for higher pressure and thinner membranes are used for good efficiency. Typical production rates are 7 standard cubic centimeters of Hydrogen and 3.5 standard cubic centimeters of oxygen per square centimeter of surface area. The HYDRion is built into a cell structure typically built from Titanium and plastic parts so that current can be applied uniformly over the surface of the membrane. Stack construction can be used to increase the operating voltage that is applied to the cell. Typically each cell operates at 2 V and if 6 cells are stacked the stack voltage is a more convienient 12 V DC. Current draw is typically 1 Amp / cm2 and operating temperature is typically 50 C.