Effect of direct current electric field intensity and electrolyte layer thickness on oxygen reduction in simulated atmospheric environment

Authors

Xin Zhang
Junxi Zhang
Qimeng Chen
Nianwei Dai
Qingzhao Ni
Lai-chang Zhang, Edith Cowan UniversityFollow
Fahe Cao
Jianqing Zhang

Document Type

Journal Article

Publication Title

Corrosion Science

ISSN

0010938X

Publisher

Elsevier Ltd

School

School of Engineering

RAS ID

28377

Comments

This is an Author's Accepted Manuscript of: Zhang, X., Zhang, J., Chen, Q., Dai, N., Ni, Q., Zhang, L. -., . . . Zhang, J. (2019). Effect of direct current electric field intensity and electrolyte layer thickness on oxygen reduction in simulated atmospheric environment. Corrosion Science, 148, 206-212. Available here

© 2019. This manuscript version is made Available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

Abstract

The effect of direct current (DC) electric field and electrolyte layer thickness on oxygen reduction in simulated atmospheric environment were investigated using electrochemical measurements. The results show that the limiting diffusion current density (i_lim) decreases with increasing the thin electrolyte layers (TELs) thickness but it increases with increasing the DC electric field intensity. The potential shifts negatively with the DC electric field. It is found that the DC electric field enables OH⁻ ions to quickly migrate from the solution/electrode interface to the electrolyte layer. All these features promote the cathodic reduction process thereby enhancing the metal corrosion rate.

DOI

10.1016/j.corsci.2018.12.013