Вид документа : Статья из журнала Шифр издания : 54/S 54 Автор(ы) : Shkerin S. N., Gyrdasova O. I., Volkov V. L. Заглавие : Electrode System Ni/NayAlxV12O30/Al3+:An Impedance Spectroscopy Study Место публикации : Russian Journal of Electrochemistry. - 2002. - Vol. 38, № 5. - С. 496-506 Примечания : Bibliogr. : p. 505-506 (17 ref.) ISSN: 1023-1935 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): электродные системы--импедансная спектроскопия Аннотация: The impedance of electrochemical cells Ni/VOB/Al3+, Ni/VOB/Na+, and Ni/VOB/Ni (where VOB stands for vanadium oxide bronzes of the general formula NayAlxV12O30, with 0 x £1.7) is studied both at equilibrium and a constant-current polarization. Variations in the VOB composition and aqueous electrolytic solutions in contact with the bronze as a result of the passing of the current are monitored. The results of these measurements are employed to substantiate a model that describes the occurrence of processes of current production in the Ni/VOB/Al3+ electrode system. The overvoltage is defined to a substantial degree by the aluminum diffusion. The diffusion coefficients for aluminum, its partial conductivity, and transport number are estimated Доп.точки доступа: Gyrdasova, O. I.; Volkov, V. L.; Волков Виктор Львович