| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
E-8 (Digital): Improving Wetting of Silver (Ag) on Oxide Surface with Patterned Nickel (Ni)-particles |
| Author(s) |
Jiyun Park, Jason D. Nicholas, Yue Qi |
| On-Site Speaker (Planned) |
Jiyun Park |
| Abstract Scope |
Silver (Ag) is commonly used as a circuit paste in Solid Oxide Fuel Cells due to its low electrical resistivity and oxidation resistance, however, its wettability on various oxide surfaces needs to be improved. In this study, we modeled the intrinsic (chemical) wetting and extrinsic (structural) wetting of Ag on yttria-stabilized zirconia (YSZ) and gadolinium-doped ceria surfaces. Liquid Ag droplet wetting on oxide surface with or without different Ni particles patterns was simulated with molecular dynamics (MD) simulations with the force field fitted to the interface interactions calculated by density functional theory. The MD simulations showed the Ag droplet did not wet the bare YSZ surface but could spread more on the surface by Ni-particle patterns, as Ag wets Ni, resulting in a 75% contact area increase. An analytical model was developed to describe the relation of the contact area increase with the Ni-particle size and distance on various substrates. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |