Electrodeposition of lead from 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide ionic liquid

Yasushi Katayama, Ryuta Fukui, Takashi Miura

研究成果: Article査読

37 被引用数 (Scopus)

抄録

The electrochemical behavior of lead (Pb) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA), containing Pb(TFSA)2. The cathodic and anodic currents corresponding to electrodeposition and stripping of Pb, respectively, were observed by cyclic voltammetry. The formal potential of Pb(II)/Pb couple was found to be -0.68 V vs. Ag/Ag(I), which is more negative by 0.11 V than that of Sn(II)/Sn couple. The diffusion coefficient of Pb(II) at 25°C was 0.8 × 10-7 cm2 s-1, which was close to those of divalent metal species in BMPTFSA. The local change of the viscosity and density of the ionic liquid near the electrode surface during electrodeposition and stripping of Pb was confirmed by electrochemical quartz crystal microbalance. The nucleation process and the morphology of electrodeposited Pb were found to be dependent on the deposition potential, probably due to accumulation of BMP+ at the surface of the negatively polarized electrode.

本文言語English
ページ(範囲)D251-D255
ジャーナルJournal of the Electrochemical Society
160
6
DOI
出版ステータスPublished - 2013 9 24

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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