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- W2970051112 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." @default.
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- W2970051112 date "2019-07-10" @default.
- W2970051112 modified "2023-09-25" @default.
- W2970051112 title "Effect of Infiltration on Performance of Ni-YSZ Fuel Electrodes" @default.
- W2970051112 doi "https://doi.org/10.1149/09101.1791ecst" @default.
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