Abstract
A seawater magnetohydrodynamic (MHD) power generator is a unique system that not only transforms the kinetic energy of ocean and tidal currents directly into electric energy but also generates hydrogen gas by seawater electrolysis. In this study, we constructed experimental equipment and an electrochemical flow cell, which simulated a linear-type seawater MHD power generator, and investigated the effect of magnetic field on seawater electrolysis. Under magnetic field under solution flow conditions, we clarified that the strength of the magnetic field affected the current value of seawater electrolysis, which indicates that the MHD power generation was successfully simulated by the developed experimental equipment and electrochemical flow cell. Our electrochemical measurement results suggested that magnetic field was correctly applied to the cell and that the Lorentz force acted on the ions in the electrolyte solution, showing improvement in hydrogen evolution reaction (HER) efficiency under the MHD power generation conditions.
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