The stress engendered by oxygen bubble formation in the electrolyte of solid oxide electrolysis cells

Olivier Comets, Peter W. Voorhees

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

It has been reported that running a Solid Oxide Electrolysis Cell above a critical current degrades the cell very quickly. This degradation has been linked to oxygen bubble formation in the electrolyte near the oxygen electrode. The applied current in the presence of charge transfer resistances is responsible for a high oxygen potential under the oxygen electrode which translates into a large driving force for the formation of oxygen gas in the electrolyte and can lead to the nucleation of oxygen gas bubbles. When such a bubble nucleates, local equilibrium at the interface between the bubble and oxide leads to an extremely high pressure inside it introducing, in return, significant stresses in the oxide. In this paper, the stress field surrounding the oxygen bubbles in the electrolyte is treated and the resulting elastic energy is determined.

Original languageEnglish (US)
Title of host publicationElectrochemical Synthesis of Fuels 1
Pages123-128
Number of pages6
Edition33
DOIs
StatePublished - Dec 1 2012
Event1st International Symposium on Electrochemical Synthesis of Fuels, ESF 2011 - 220th ECS Meeting - Boston, MA, United States
Duration: Oct 9 2011Oct 14 2011

Publication series

NameECS Transactions
Number33
Volume41
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other1st International Symposium on Electrochemical Synthesis of Fuels, ESF 2011 - 220th ECS Meeting
CountryUnited States
CityBoston, MA
Period10/9/1110/14/11

ASJC Scopus subject areas

  • Engineering(all)

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    Comets, O., & Voorhees, P. W. (2012). The stress engendered by oxygen bubble formation in the electrolyte of solid oxide electrolysis cells. In Electrochemical Synthesis of Fuels 1 (33 ed., pp. 123-128). (ECS Transactions; Vol. 41, No. 33). https://doi.org/10.1149/1.3702419