R. Aogaki et al., HYSTERESIS EFFECT OF MAGNETIC-FIELD ON ELECTRON-TRANSFER PROCESSES INELECTROCHEMICAL REACTION, Physica. B, Condensed matter, 201, 1994, pp. 611-615
Using magnetohydrodynamic electrodes (MHDE), a hysteresis effect of th
e magnetic field on the electron transfer process in the copper deposi
tion in a CuSO4 solution with 1 M H2SO4 as a supporting electrolyte wa
s examined. MHDE are new type electrodes to analyze electrochemical re
actions, utilizing the electrolyte solution flow induced by the Lorent
z force which can regulate the flow velocity to enhance the mass trans
fer of active species, ultimately until the current becomes equal to t
he reaction current corresponding to the rate of electron transfer. Fr
om the experimental results, it was shown that the reaction current ob
served gives a larger value at the first stage of the reaction. Howeve
r, the current decreases and takes two different values depending on t
he mode how to apply the magnetic field to the electrode system, i.e.,
decreasing or increasing the magnetic flux density.