Abstract
The Na + content of beta″-alumina can be replaced by a variety of divalent cations in simple ion exchange reactions. The resulting divalent beta″-aluminas are the first family of high conductivity solid electrolytes for divalent cations. Divalent beta″-aluminas which have been prepared so far include conductors of Ca 2+, Sr 2+, Ba 2+, Zn 2+, Cd 2+, Pb 2+, Hg 2+, and Mn 2+. Most have conductivities of about 10 -6 (Ω cm) -1 at 40°C and 10 -1 (Ω cm) -1 at 300–400°C. However, the conductivity of Pb 2+ beta″ alumina is 4.6x10 -3 (Ω cm) -1 at 40°C, nearly equal to that of Na + beta″-alumina. Preliminary structures studies indicate that order-disorder reactions among the divalent cations and vacancies in the conduction region of beta″-alumina critically influence conductivity in the structure.
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.
