|About this Abstract
||MS&T22: Materials Science & Technology
||Energy Materials for Sustainable Development
||L-17: Proton Conducting Layered Perovskites of the Form Ba5Er2Al2ZrO13
||Joshua Willoughby, Yuqing Meng, Joshua Tong, Kyle S. Brinkman
|On-Site Speaker (Planned)
Proton conducting ceramics are a key step in the development of intermediate temperature solid oxide fuel cells. The electrolyte layer of fuel cells facilitates the transport of protons and oxygen ions between the electrodes while blocking the transfer of electrons. The layered hexagonal perovskite family has been shown to demonstrate this level of proton conduction while also having low electronic conductivity. The Ba5Er2Al2ZrO13 material adopts this structure and has been reported to be a pure ionic conductor, making it an ideal candidate for an electrolyte material in a protonic ceramic fuel cell. In this work, the Ba5Er2Al2ZrO13 material has a sintering aid of 1% wt NiO added to increase the final density of the material for the application as an electrolyte. In this study, DC four-point tests, electrochemical impedance spectroscopy, and electromotive force testing are used in order to characterize and separate the material’s electronic, oxide, and proton conductive properties.