Insights into Barriers to Increasing Proton Conductivity of Lanthanum Scandate Ceramics via High Sr-Doping
Alyona S. Lesnichyova,
Semyon A. Belyakov,
Sofia A. Petrova
et al.
Abstract:Maximizing proton conductivity is a necessity in the
design of
efficient oxide proton-conductive membranes for electrochemical applications.
Acceptor doping makes it possible to achieve a high concentration
of charge carriers but encounters problems of phase stability or defect
interaction. Sr is the optimal dopant for perovskite-like lanthanum
scandate. La1–x
Sr
x
ScO3−δ (0.05 ≤ x ≤ 0.20) solid solutions demonstrate phase and structural
stability and high levels of hydration. Compositions with x = 0.1 and 0.1… Show more
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