V 86 Volkov, V. L. Ionic Conductivity of (PbOH)2V12O31 · nH2O / V. L. Volkov, G. S. Zakharova // Inorganic Materials. - 2003. - Vol. 39, № 11. - P. 1188-1191 : il. - Bibliogr. : p. 1191 (5 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ИОННАЯ ПРОВОДИМОСТЬ -- ТЕРМООБРАБОТКА -- ПОЛИВАНАДАТЫ -- ЗОЛЬ-ГЕЛЬ МЕТОД Аннотация: The 333-K complex impedance and temperature-dependent 10-kHz electrical conductivity of the cell Ni|(PbOH)2V12O31 · nH2O|Ni were measured. The results demonstrate that heat treatment changes the conductivity of (PbOH)2V12O31 · nH2O. After the removal of hydrate water, the activation energy for conduction in the range 203–485 K is 0.27 eV. The polarization resistance of the Ni electrodes is 31% of the total resistance of the cell at 296 K and is nearly zero above 303 K. The potential of the system lead polyvanadate/lead varies linearly with the Pb2+ concentration in aqueous Pb(NO3)2 solutions Полный текст |