[9a-S223-1~9] 7.2 電子ビーム応用

▲ [9a-S223-2] Electro-plating and stripping of lead dendrites observed by operando scanning electron microscopy with an electrochemical cell

〇Gada He¹、Yoshifumi Oshima¹、Masahiko Tomitori¹ (1.JAIST)

キーワード：scanning electron microscope, electrochemical cell, electro-plating and stripping

We developed a conventional electrochemical cell for scanning electron microscopy (SEM) (in-lens FE-SEM (S-5200, Hitachi)) to observe the processes of electro-plating and stripping simultaneously with measuring the cyclic voltammetry using two electrode terminals. Lead dendrites on an Au electrode in a 1.5 M Pb(NO₃)₂ solution in the cell were grown and decomposed during a cyclic of voltammogram. The operando SEM observation revealed that initially Pb islands formed, followed by dendritic growth. The substrate shape dependence of the process will be discussed.