Production of hydrogen fuel or hydrogen-derived transportation fuels can be made more efficient by lowering the capital cost and operating cost of the process. If the hydrogen is produced by water electrolysis, the operating cost (or the electricity cost) of the electrolysis may be minimized with a lower overpotential of the electrolysis reaction. We present a method of using current-voltage data to estimate the relative energy losses in a PEM electrolysis cell that has been catalyzed with a Pt-C cathode electrocatalyst and a composite transition-metal anode electrocatalyst.

Energy-efficiency calculations of a polymer-electrolyte membrane (PEM) electrolyzer utilizing Pt-Ag, Pt-Au, or Pt-Ir as an anode electrocatalyst

243rd National Meeting (2012)

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