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Class I So-Called Normal Metals

Due to the high exchange current density values, Iq, the processes of electrodeposition of the normal metals belong to the fast electrochemical processes which enable formation of powder at the relatively low overpotentials [5]. The dendrites of normal metals are mainly 2D (two dimensional), and the shape of the dendrites of [Pg.206]

The shape of dendrites depends not only on the nature of metals but also oti the type of used electrolyte. For example, the 2D Pb dendrites of the P type are obtained from the basic (nitrate) electrolyte (Fig. 6.1a), while the 2D Pb dendrites of the S type are obtained from the complex (acetate) electrolyte (Fig. 6.1b) [11,14,18]. As far as the shape of dendrites of the other metals from fliis group, they also belong to either P (Ag Fig. 6.1c) [12, 15] or S (Cd Fig. 6.1d) types [5, 12, 13, 19]. The branchy Pb and Cd dendrites of the S type are usually referred as the fem-like ones [13,14]. Aside from the (P) and (S) dendrites, these metals are also electrodeposited [Pg.207]

In contrast to the very different morphology of the Pb powder particles obtained from the different electrolytes, the crystallographic stracture of powder particles does not depend on the type of electrolyte [11, 18]. Irrespective of the type of electrolytes, the dominant presence of Pb crystallites oriented in the (111) plane was observed in the powder particles obtained from both basic and complex electrolytes. [Pg.208]


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