In this work, the potential of process intensification of alkaline water electrolysis has been studied when using 3-D nickel electrodes. First of all, it was shown that such macro porous, 3-D electrodes, when used in combination with forced electrolyte flow, can have a strong impact on the hydrogen generation performance of the process. For optimal conditions of the imposed Reynolds numbers of both the catholyte and anolyte flow, a 45% increase in current was measured as compared to state-of-the-art 2-D electrodes for a cell potential of 2 V, the latter being a typical value for industrial electrolysers. For the 2-D electrodes, forced flow did not induce any significant improvement. Secondly, the use of pulsed electrical power has been studied as well, with pulse widths in the range 2-200 ms. A significant synergistic effect was observed when using 3-D electrodes in combination with both forced flow and pulsed voltage, allowing in the case of 2 ms pulses an almost fivefold increase in current at 2 V. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.