Oxide ion dynamics in Ba3NbMoO8.5 solid electrolyte
Oxide ion conductors have been a focus of research due to their application as electrolyte in solid oxide fuel cells (SOFCs). Fluorite-type yttria-stabilized zirconia (YSZ) is currently the most commonly used electrolyte in SOFCs, leading to high operating temperatures (800 – 1000 °C), precluding their more widespread use. Recently, high oxide ion conductivity has been reported in Ba3NbMoO8.5 a hybrid of the 9R perovskite polytype (A3B2O9) and the palmierite (A3B2O8). With the conductivity measurements confirming long-range dynamics in Ba3MoNbO8.5, we propose to perform variable-temperature inelastic (INS)/quasi-elastic (QENS) neutron scattering experiments on this oxide ion conductor, to observe the dynamics directly related to ionic conduction. We request 4 days of IN16B beam time and 3 days of IN5 beam time to carry out variable-temperature inelastic/quasi-elastic neutron scattering experiments on Ba3MoNbO8.5
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EVANS Ivana; APPEL Markus; Bernhard Frick; FULLER Chloe; GONZALEZ Miguel Angel; KOZA Michael Marek; PIOVANO Andrea and SCHWAIGHOFER Bettina. (2020). Oxide ion dynamics in Ba3NbMoO8.5 solid electrolyte. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-03-183
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