Abstract
Recent work has shown that Gd 2(Ti 1-xMO x) 2O 7 (Mo doped GT) exhibits high levels of mixed conduction under reducing atmospheres, making it suitable as an anode in a solid oxide fuel cell. It decomposes at high P O 2 , however. We have succeeded in extending the stability limits of the GT–Mo to higher P O 2 with the addition of Mn. Our earlier studies on Gd 2((Mo yMn 1-y) xTi 1–x) 2O 7 (GMMT) as a function of P O 2 , T, and composition utilizing impedance spectroscopy and X-ray diffraction are extended to include the joint effects of variations in x and y on the conductivity and stability of the material in cathodic environments. Defect models explaining the dependence of the partial conductivities on oxygen partial pressure, temperature and composition are also presented.
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.
