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Current Topics in Electrochemistry   Volumes    Volume 23 
Influence of various preparation methods on the electrochemical properties of the active Zn mass with conductive cuprate ceramics as additives
A. Stoyanova-Ivanova, G. Ivanova, E. Leffterova, V. Petrova, O. Petkov, A. Stoyanova
Pages: 25 - 32
Number of pages: 8
Current Topics in Electrochemistry
Volume 23 

Copyright © 2021 Research Trends. All rights reserved

The subject of this research is a study of the influence of different methods (ball-mill treatment, ultrasound treatment and mechanical mixing) for obtaining Zn-electrode active mass. Zn-electrodes are prepared using ZnO, carbon and addition of two ceramics - ((Bi1.7Pb0.3Sr2CuOx (B(Pb)SCO 2201) and Bi1,7Pb0,3Sr2CaCu2Ox (B(Pb)SCCO 2212)). The phase composition and morphology of the as-prepared samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM)). The conductivity of Zn-electrodes was examined by electrochemical impedance spectroscopy (EIS). It has been found that the ultrasound treatment leads to the better homogenization of the active mass with B(Pb)SCCO 2212. The observed results can be explained on one hand by the processes that take place during ultrasonic treatment and on the other hand by the presence of calcium carbonate in the ceramic, which probably favours faster processes at the micro level.
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