| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Proton Transport in the Ba<sub>0.8</sub>Ca<sub>0.2</sub>NdInO<sub>4</sub> Mixed Oxide Ion Conductor |
| Author(s) |
Stephen Skinner, Yu Zhou |
| On-Site Speaker (Planned) |
Stephen Skinner |
| Abstract Scope |
Materials for low temperature ceramic fuel cells are increasingly sought to enable operation in the 400-600<sup>o</sup>C temperature window. To address this regime it is clear that a range of ion transport mechanisms are evaluated with the most recent advances being in the area of solid oxide proton conducting ceramics. The majority of studies have focused on the use of BaCeO<sub>3</sub> perovskite based electrolytes, with relatively few studies reporting new proton conductors. Combined with this there has been debate over the existence of triple conductors as electrodes in these devices (oxide, electron, proton). Recently the BaNdInO<sub>4</sub> composition was proposed as a new oxide ion conductor, and in this work we demonstrate that the Ca substituted phase also exhibits significant protonic transport. Our measurements encompass impedance spectroscopy and isotopic labelling studies to conclusively show that this material is a mixed conductor with significant proton mobility. |