The processes of corrosion and degradation of electrode materials are crucial for the efficiency of pulse electrolysis and are expected to depend on the electrical characteristics of the pulse (current/voltage, frequency, duty cycle). The aim of the present paper is to investigate the effect of these characteristics on the electrochemical properties of Ti electrodes. Pulse electrolysis was carried out in 6 M KOH for 24 and 72 h with current amplitude of 65 mA, frequencies of the signal of

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... kHz and pulse duty cycle between 1 and 99%. The electrochemical properties of the titanium anode and cathode surfaces after operation were characterized by electrochemical impedance spectroscopy in a borate buffer solution (pH 7.4) at the open circuit potential, as well as by linear sweep voltammetry in a similar solution containing an equimolar mixture of K4Fe(CN)6 and K3Fe(CN)6 as a redox couple to probe the electronic conductivity of the surface films.