[18a-E318-1~14] 【CS.7】 Code-sharing Session of 7.2 & 7.4 & 9.5

▲ [18a-E318-6] In-situ Scanning Electron Microscopy Observation of Lead Dendrites
Grown in an Electrochemical Cell

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

Keywords:Scanning Electron Microscopy, Electrochemical Cell, Electro-plating and Stripping

We developed an electrochemical cell for in-situ scanning electron microscopy (SEM) using an in-lens FE-SEM setup (S-5200, Hitachi Hightechnologies), having two electrode terminals to observe the processes of electro-plating and stripping of lead dendrites simultaneously with measuring the cyclic voltammetry. Pb dendrites on an Au electrode in an electrolyte of 1.5 M Pb(NO₃)₂ solution were grown and decomposed during a cyclic of voltammogram. The in-situ SEM observation revealed the initial formation of Pb islands and the subsequent Pb dendritic growth. The electrolyte concentration and the scan rate of applied voltage changed the dendrites formation and decomposition. The correlation of concentration site and local structural differences will be discussed.