The effects of hydrogen on reactivation of iron in alkaline solutions

Ahsan Ejaz, Zhanpeng Lu, Tetsuo Shoji, Junjie Chen, Bangxin Zhou

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Effects of hydrogen on interfacial behavior of iron in alkaline solutions were investigated by electrochemical measurements using a Devanathan dual cell. Hydrogen could cause a change of open circuit state from passivity to active dissolution, caused the active dissolution range and current density peaks in anodic polarization curves, and decreased the electrochemical impedance for iron in dilute bicarbonate solutions. Hydrogen increased the anodic current and decreased the electrochemical impedance for iron in solutions with high pH values and high concentrations of bicarbonate. The effects of charged hydrogen on reactivation of iron dissolution and passive film stability as well as the interaction with solution chemistry were investigated analyzed.

Original languageEnglish
Pages (from-to)421-428
Number of pages8
JournalECS Transactions
Volume59
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1
Event2014 Electrochemical Conference on Energy and the Environment, ECEE 2014 - Shanghai, China
Duration: 2014 Mar 132014 Mar 16

ASJC Scopus subject areas

  • Engineering(all)

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