Effect of high-voltage pulses on electrochemical properties of a molten magnesium electrolyte

Structural Relaxation in the Activated Molten Chloride Electrolytes of Polyvalent Metals

“…Full pulse duration excludes introduction of electrolysis products into the electrolyte and it's any significant overheating. This analysis and electroluminescence spectra of molten salts [5,6,10] confirm that regularities observed in behavior of the electrolytes, in strong fields that we used, take place with maintaining the electrolytic nature of the conductance.…”

“…We have established the regularity in dependence of conductivity of molten salts on electric field strength (EFS) by analyzing the waveforms of pulsed ( s  ) discharges in them. The obtained high-voltage limiting conductivities of individual molten salts obey the Nernst-Einstein ratio [6].…”

“…The system tends to the equilibrium state, to reestablish its equilibrium characteristic structural species diversity and their distribution. Performing a Fourier analysis of the time series for the relaxation in non-equilibrium molten KCl MgCl  2 leads to the conclusion about realization of a quasi-periodic regime of oscillation and about deterministic chaos; the dimensionality of a phase space corresponds to five [22]. This phase space corresponds to the five structural spaces in this system above; from the fig.…”

“…After activation of the magnesium electrolyte MgCl 2 -NaCl-KCl by series of pulses with the amplitude of voltage of 8 kV EMF of the cell became equal to 1630 mV. Consequently, the potential of the magnesium electrode in its activated chloride electrolyte became more positive by 15.6% [5,6]. The results above allow expecting that the decomposition potentials of metal chlorides in non-equilibrium state would be less than in "equilibrium" state.…”

“…After completion of high-voltage pulsed discharges in molten electrolytes, their low-voltage conductivity (measured by a conventional AC bridge) turns out to be increased, the electrochemical potentials of the metals turn out to be more positive [6,7], while the characteristic peaks of Raman spectra almost disappear [8], i.e., the "memory" effect is observed in them, which is expressed as "activation» of the melts. These observations were interpreted as a consequence of the stimulated dissociation of complex formations into simpler and elementary ions.…”