Enhanced zinc corrosion mitigation via a tuned thermal pretreatment in an alkaline solution containing an organic inhibitor

D. Gelman, H. Drezner, A. Kraytsberg, D. Starosvetsky, Y. Ein-Eli

Research output: Contribution to journalArticlepeer-review

Abstract

A short-term exposure of zinc (Zn) electrodes in polyethylene glycol (PEG) containing alkaline electrolytes at a temperature range of 45–65 °C significantly reduces the corrosion rate of the Zn in the strong alkaline solutions. The enhanced characteristics of the protective film formed during this pretreatment process is attributed to a substantial reduction in the cross-sectional “diameter” of the hydrated inhibitor molecules, due to a decrease in the hydration number at warmer temperatures. One can expect that “slimmer” organic molecules with a lower cross-sectional dimension, having a lower hydration number, will constitute a denser surface layer, providing enhanced isolation of the neighborhood active sites at the Zn anode. Implementing this approach in alkaline batteries utilizing Zn anodes may result in battery performance enhancement. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)2217-2226
Number of pages10
JournalJournal of Solid State Electrochemistry
Volume22
Issue number7
DOIs
StatePublished - 1 Jul 2018

Keywords

  • Corrosion
  • Inhibiter
  • PEG
  • Thermal pretreatment
  • Zinc batteries

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • General Materials Science
  • Electrochemistry

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