| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Improving Intermediate-temperature Solid Oxide Fuel Cell Anode Performance with Metal and MIEC Nanocatalyst Infiltration |
| Author(s) |
Jillian R. Mulligan, Boshan Mo, Uday Pal, Srikanth Gopalan, Soumendra Basu |
| On-Site Speaker (Planned) |
Jillian R. Mulligan |
| Abstract Scope |
Solid oxide fuel cells (SOFCs) are a promising green energy technology because of the low-impact nature of their byproducts. However, to expand their applications and improve their intermediate-temperature operation, SOFCs need to be designed with long-term stability and efficiency in mind. One method of improving performance without excessive fabrication steps involves infiltrating electrodes with nanoscale electrocatalysts, which increase the number of reaction sites. In this study, we consider the microstructure and electrochemical performance of Ni-YSZ anodes infiltrated with nickel and gadolinium-doped ceria (a mixed ionic and electronic conductor). The structure of these infiltrated anodes was characterized by scanning electron microscopy (SEM) of fracture cross-sections, and cell performance was quantified with electrochemical impedance spectroscopy (EIS). By modeling charge-transfer processes in the anode with distribution of relaxation times analysis, we explore the nanocatalyst microstructure-performance relationship in Ni-YSZ anodes. |