Electrochemistry of Sn(II)/Sn in a hydrophobic room-temperature ionic liquid
Electrochemistry of Sn(II)/Sn in a hydrophobic room-temperature ionic liquid
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DOI：
10.1016/j.electacta.2008.04.056
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发表时间：
2008-09-20
影响因子：
6.6
通讯作者：
Miura, Takashi
中科院分区：
文献类型：
--
作者：
Tachikawa, Naoki;Serizawa, Nobuyuki;Miura, Takashi
研究了室温离子液体1-正丁基-1-甲基吡咯烷双（三氟甲基磺酰基）酰亚胺（BMPTFSI）中Sn（II）/Sn的电化学反应。金属锡的阳极溶解是通过双电子转移反应进行的，电流效率接近100%。在含有Sn（II）的BMPTFS l中，可以在Cu基底上电沉积Sn。Sn（II）/Sn的形式电位为-0.57 V vs. Ag/Ag（I）。根据色电流法和计时电位法，估计Sn（II）的扩散系数约为1 × 10（-7）cm（2）s（-1）。Sn在多晶Pt衬底上成核的初始阶段被发现被归类为扩散控制下的三维渐进成核，计时电流法，表明成核速率比晶体生长速率快。(C)2008爱思唯尔有限公司保留所有权利。
The electrochemical reaction of Sn(II)/Sn was investigated in a room-temperature ionic liquid, 1-n-butyl-1 -methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPTFSI) at 25 degrees C. The anodic dissolution of Sn metal proceeded by a two-electron transfer reaction with a current efficiency of nearly 100%. Electrodeposition of Sn on a Cu substrate is possible in BMPTFSl containing Sn(II). The formal potential of the Sn(II)/Sn is -0.57 V vs. Ag/Ag(I). The diffusion coefficient of Sn(II) was estimated to be similar to 1 x 10(-7) cm(2) s(-1) from chromoamperometric and chronopotentiometric techniques. The initial stage of nucleation of Sn on a polycrystalline Pt substrate was found to be classified into a three-dimensional progressive nucleation under diffusion control by chronoamperometry, suggesting the rate of nucleation is faster than that of crystal growth. (C) 2008 Elsevier Ltd. All rights reserved.