Long-term stability of perovskite cathodes in solid oxide fuel cells

  • Jeffrey De Vero Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology

Abstract

Solid oxide fuel cells (SOFCs) are the cleanest and most efficient energy technology for direct conversion to electricity of a wide variety of fuels. In addition to the efforts to reduce the operating temperature of SOFCs from 1000°C to below 800°C, research studies on the underlying degradation mechanisms are envisioned to improve the long-term stability and durability of the components of SOFCs. In general, the SOFC is comprised of a porous cathode, dense electrolyte, porous anode, interconnects and current collectors. The cathode is a critical component in SOFCs since it displays cell polarization resistance which reduction makes an important challenged to be addressed. The deactivation of the cathode often caused by the: 1) formation of interfacial products in the vicinity of the electrolyte and the 2) surface precipitation from the reaction of the components of the cathode with the air/fuel or interconnects impurities such as sulfur and chrome. In this presentation, an attempt is made to highlight the influence of interfacial reaction products at the cathode-electrolyte interface on the long-term stability of cathodes and effect of the cathode composition on its reactivity with the sulfur contamination in the air.

About the Speaker

Jeffrey De Vero is a Postdoctoral Research Fellow at the National Institute of Advanced Industrial Science and Technology (AIST) in Tsukuba, Japan whose research group involves in the development and characterization of technological materials for solid oxide fuel cells (SOFC). With his fellowship at the AIST, he prepares and analyzes model heterointerfaces aiming to elucidate the degradation behavior of perovskite-type cathodes for SOFC. Before his appointment at the AIST, he was a Brain Korea 21 (BK21) Postdoctoral Fellow at the Nanospintronics Laboratory of the Department of Physics at the Chungnam National University in Daejeon, South Korea. He received his PhD in Physics from the National Institute of Physics of the University of the Philippines Diliman in 2011. In 2010 he was a Gawad Chancellor Awardee for Outstanding Research Staff.

Published
2018-03-28
How to Cite
[1]
J. De Vero. Long-term stability of perovskite cathodes in solid oxide fuel cells, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-INV-2B-02 (2018). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2018-INV-2B-02.