Corrosion and passivation behavior of pure Ti in different types of ionic liquids

Jhen Rong Chen, Wen-Ta Tsai, I-Wen Sun

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7 Citations (Scopus)

Abstract

The electrochemical behavior of commercially pure Ti (CP Ti) in certain ionic liquids (ILs), such as choline chloride-urea (ChCl-urea), ChCl-ZnCl 2, 1-ethyl-3-methylimidazolium chloride aluminum chloride (EMIC-AlCl3) and N-butyl-N-methylpyrrolidinium dicyanamide (BMP-DCA) were investigated by conducting open circuit potential (OCP) measurement, potentiodynamic polarization tests and electrochemical impedance spectroscopy (EIS) in glove box. The potentiodynamic polarization measurement results show that CP Ti could be passivated in BMP-DCA, ChCl-urea and ChCl-ZnCl2 ILs. However, in EMIC-AlCl3 ionic liquid, the polarization curve only exhibited active dissolution behavior, without the presence of a passive region. The passivation behavior of CP Ti in ILs was also characterized by means of X-ray photoelectron spectroscopy (XPS) to examine the roles of ILs with different chemical structures.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume159
Issue number7
DOIs
Publication statusPublished - 2012 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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