Effect of Additives on Hydrogen Evolution and Absorption during Zn Electrodeposition Investigated by EQCM

Ki Deok Song, Kwang Bum Kim, Seong Ho Han, Hongkee Lee

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Hydrogen evolution and absorption during Zn electrodeposition from zinc sulfate electrolytes containing polyethylene glycol (PEG), gelatin, and thiourea (TU) was studied using an electrochemical quartz crystal microbalance (EQCM). The results obtained indicate that PEG and gelatin act as inhibitors of hydrogen absorption on the deposited Zn and that TU acts as an inhibitor of hydrogen evolution but yet promotes hydrogen absorption on the Zn deposits. Gelatin suppressed hydrogen reduction most effectively. EQCM proved to be a useful in situ tool for investigating the effects of hydrogen evolution and absorption on metal deposition and for distinguishing between the cathodic charge for Zn deposition and hydrogen reduction reaction.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume7
Issue number2
DOIs
Publication statusPublished - 2004 Apr 8

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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