C 51 Chemical interactions in the cathode half-cell of lithium-ion batteries [Текст] / O. V. Bushkova, O. L. Andreev, N. N. Batalov, S. N. Shkerin, M. V. Kuznetsov, A. P. Tyutyunnik, O. V. Koryakova, E. H. Song, H. J. Chung // Journal of Power Sources. - 2006. - Vol. 157, № 1. - С. 477-482 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
S 54 Shkerin, S. N. Electrode System Ni/NayAlxV12O30/Al3+:An Impedance Spectroscopy Study / S. N. Shkerin, O. I. Gyrdasova, V. L. Volkov // Russian Journal of Electrochemistry. - 2002. - Vol. 38, № 5. - P496-506. - Bibliogr. : p. 505-506 (17 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 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 Полный текст |
S 54 Shkerin, S. N. X-ray Photoelectron Spectroscopy of the Surface of Solid Electrolyte La0.88Sr0.12Ga0.82Mg0.18O3 O3-α / S. N. Shkerin, M. V. Kuznetsov, N. A. Kalashnikova // Russian Journal of Electrochemistry. - 2003. - Vol. 39, № 6. - P591-599. - Bibliogr. : p. 599 (20 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ФОТОЭЛЕКТРОННАЯ СПЕКТРОСКОПИЯ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ -- ГАЛЛАТ ЛАНТАНА Аннотация: The composition and chemical state of elements on the surface of solid oxygen-conducting electrolyte La0.88Sr0.12Ga0.82Mg0.18O3-α is studied by x-ray photoelectron spectroscopy before and after annealing it at 973 K in a CO2 atmosphere. Products of interaction between doped lanthanum gallate and CO2 are localized in a surface layer 8–10 nm thick. The annealing does not lead to the formation of chemical carbon compounds with metals on the electrolyte surface. Surface layers of the electrolyte both in the initial state and after the annealing are rich in strontium oxide and contain some lanthanum hydroxide Полный текст |