TECHNOLOGY FOCUS - ELECTRONICS - Preferred Method: Decreasing the current density at the anode and reducing an overvoltage at the anode comprises increasing the surface area of the anode relative to the surface area of the cathode. Decreasing the hydrogen permeation through the cell membrane comprises increasing the volume of the anode chamber relative to the volume of the cathode chamber. The method further comprises increasing the surface area of the anode by increasing the amount of irregularities in a surface of the anode. Decreasing the hydrogen permeation through the cell membrane comprises increasing the volume of the anode chamber relative to the volume of the cathode chamber. Decreasing the current density at the anode and reducing an overvoltage at the anode comprises introducing a catalyst to a surface of the anode, where the catalyst is selected from finely divided platinum or ruthenium oxide. Increasing the efficiency of a high-pressure electrolysis cell having an anode and a cathode defining an interior portion having a defined volume in between comprises increasing a surface area of the anode relative to a surface area of the cathode to decrease anode current density while the high-pressure electrolysis cell is operated without increasing the defined volume of the interior portion. It also comprises increasing a volume of the anode chamber relative to a volume of the cathode chamber without increasing the defined volume of the interior portion. Increasing a surface area of the anode relative to a surface area of the cathode comprises scoring a surface of the anode. The method further comprises introducing a catalyst to a surface of the anode. Preferred High-Pressure Electrolysis Cell: The surface area of the inner surface of the anode is greater than the surface area of the outer surface of the cathode. The volume of the anode chamber is greater than the volume of the cathode chamber. The inner surface comprises a substantially cylindrical inner surface. The substantially cylindrical inner surface comprises an irregularly shaped cylindrical inner surface. The outer surface comprises a substantially cylindrical outer surface. The outer surface comprises an irregularly shaped cylindrical outer surface. It further comprises a catalyst coating applied to the inner surface of the anode.