@inproceedings{8fea9da4ccf44190acb0a650d7029fc3,
title = "Effect of infiltration on performance of Ni-YSZ fuel electrodes",
abstract = "Ni-YSZ electrodes for solid oxide cells (SOCs) can have a diverse range of compositions, porosities, and particle sizes - factors that impact electrochemical performance. A typical Ni-YSZ structure in an anode-supported cell fired at 1400oC has feature sizes of ~ 0.5 µm that yield desirably low polarization resistance values < 0.1 Ω cm2 at 800oC in H2-H2O fuel, along with good stability. Decreasing feature size increases three-phase boundary density, thereby reducing polarization resistance and improving low-temperature cell performance. However, the feature size that can be reached in anode-supported cells is limited by the relatively high co-firing temperature. Furthermore, decreased feature sizes can exacerbate coarsening effects that degrade performance. This paper discusses an alternative method for enhancing the low-temperature performance of Ni-YSZ anodes - infiltration of Gd-doped Ceria (GDC). Since GDC is introduced after the high-temperature firing, nano-scale particles can be achieved. A single-step GDC infiltration into Ni-YSZ is studied with different solution concentrations. The optimal infiltration is found to reduce polarization resistance by a factor of 3 times at 600oC.",
author = "Barnett, {Scott A.} and Park, {Beom Kyeong} and Roberto Scipioni",
year = "2019",
month = jan,
day = "1",
doi = "10.1149/09101.1791ecst",
language = "English (US)",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "1",
pages = "1791--1797",
editor = "K. Eguchi and Singhal, {S. C.}",
booktitle = "Solid Oxide Fuel Cells 16, SOFC 2019",
edition = "1",
note = "16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 ; Conference date: 08-09-2019 Through 13-09-2019",
}