FORMATION AND DECOMPOSITION OF DISSIPATIVE STRUCTURES IN THE CHEMISORPTION LAYERS ON PLATINUM ANODE IN HYDROCHLORIC-ACID SOLUTIONS

Kinetics of the potentiostatic growth-decomposition of oxygen coverage (theta), corresponding changes in the interfacial potential (DELTA(CH I)), and hysteresis of theta and DELTA(CHI) at the increase and decrea se in the Pt-anode polarization in 1 M HCl at 1.1 < E < 2.4 V are stud ied. Intensive and extensive components of DELTA(CHI) characterizing t he injection and loss of electrons in the chemisorbed oxygen layers ar e found as a function of the potential and the coverage. The functiona l role of these components in altering the charge and the work of form ation of the electrode-solution interface is considered.