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 language | English |
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Pages (from-to) | 2217-2226 |
Number of pages | 10 |
Journal | Journal of Solid State Electrochemistry |
Volume | 22 |
Issue number | 7 |
DOIs | |
State | Published - 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