Abstract
Enhancing proton-hole mixed conduction is one of the promising methods to improve the cathode performance of proton-conducting fuel cells. In this study, Al-doping is conducted to enhance the hole conduction in Y-doped BaZrO3. The relationship between the defect structure around Al and the electrical conductivity is investigated. 27Al NMR results indicated the formation of more than one oxygen vacancy around Al and the clustering of the acceptors. The electrical conductivity shows dominant proton conduction below 600ºC while other charge carriers, such as oxygen vacancies and electron holes, dominate at 800ºC. The Al-doping affects the formation of the defects but shows negligible influence on the dominant charge carriers at lower temperatures.
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.
