General Mechanism for the Synchronization of Electrochemical Oscillations and Self-Organized Dendrite Electrodeposition of Metals with Ordered 2D and 3D Microstructures
General Mechanism for the Synchronization of Electrochemical Oscillations and Self-Organized Dendrite Electrodeposition of Metals with Ordered 2D and 3D Microstructures
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DOI：
10.1021/jp063462t
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发表时间：
2007-01
影响因子：
3.7
通讯作者：
Kazuhiro Fukami;Shuji Nakanishi;Haruka Yamasaki;T. Tada;K. Sonoda;N. Kamikawa;N. Tsuji;H. Sakaguchi;Y. Nakato
中科院分区：
文献类型：
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作者：
Kazuhiro Fukami;Shuji Nakanishi;Haruka Yamasaki;T. Tada;K. Sonoda;N. Kamikawa;N. Tsuji;H. Sakaguchi;Y. Nakato
利用Sn、Zn、Cu和Pb电沉积研究了有序枝晶结构的电位振荡和同步自组织形成机制，这是Laplacian场形态发生的一个重要例子。电子后向散射衍射（EBSD）实验表明，锡晶格是一种典型的有序枝晶结构，从锡电极表面沿特定方向外延生长。原位光学和相对比显微观察表明，锡晶格生长和生长锋附近沉积的锡离子浓度分布与电位振荡同步振荡，形成了高度有序的锡晶格结构。在其他电沉积系统中也观察到类似的行为。在这些结果的基础上，提出了有序枝晶结构的潜在振荡和同步形成的一般机制，其中自催化cr…
Mechanisms for potential oscillations and synchronizing self-organized formation of ordered dendrite structures, which is an important example of morphogenesis in Laplacian fields, were studied using Sn, Zn, Cu, and Pb electrodeposition. Electron backscattering diffraction (EBSD) experiments showed that Sn latticework as a typical example of the ordered dendrite structures grew in an epitaxial mode in particular directions from the Sn electrode surface. In situ optical and phase-contrast microscopic inspection showed that the Sn latticework growth as well as the concentration profile for deposited Sn(II) ions near the growing front oscillated in synchronization with the potential oscillation, which led to formation of a highly ordered Sn latticework structure. Similar behavior was observed in other electrodeposition systems. On the basis of these results, a general mechanism for the potential oscillations and synchronized formation of the ordered dendrite structures was proposed, in which autocatalytic cr...