Abstract
The limiting current characteristics with regard to O 2 and CO were studied in oxidizing (O 2CO 2N 2) and reducing(CO;CO 2N 2) atmospheres. The experimental I-V characteristics were compared with a simulation and discussed considering the electrochemical oxidation and decomposition between CO and CO 2. The decomposition of CO 2 was one of the main O 2 sources of oxygen pumping in reducing atmospheres. The limiting current with regard to CO in reducing atmospheres showed a sloped limiting current regime at 700–725 °C, while that with regard to O 2 in oxidizing atmospheres did not. The sloped limiting current of CO resulted from electrode reactions which were different from those in oxidizing atmospheres, i.e. the CO 2 decomposition for the O 2 pumping cell and the CO oxidation for the O 2 consuming cell.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
