Abstract
Preliminary impedance and stability of Sr0.94Ti0.9Nb0.1O3-δ/10 vol.% 8YSZ (STN94/YSZ) composite electrodes, M/CGO infiltrated (M: Ni, Pd and Ru), has been evaluated in symmetric configuration, at OCV, under various H2O/H2 atmospheres, with H2O contents between 3–50%, at 650–850°C. Initial total Rp at 850°C, 50% H2O/H2 decreased in the order Ni/CGO≫Pd/CGO > Ru/CGO.
After 200h of exposure Ru/CGO not only continued to exhibit low impedance, with final total Rp ≅ 0.02 Ωcm2, but also negligible degradation. For comparison, Ni/CGO degraded close to a factor of 3 to ca. 0.25 Ωcm2 in an equivalent period. © 2013 The Electrochemical Society.
After 200h of exposure Ru/CGO not only continued to exhibit low impedance, with final total Rp ≅ 0.02 Ωcm2, but also negligible degradation. For comparison, Ni/CGO degraded close to a factor of 3 to ca. 0.25 Ωcm2 in an equivalent period. © 2013 The Electrochemical Society.
| Original language | English |
|---|---|
| Journal | E C S Electrochemistry Letters |
| Volume | 3 |
| Issue number | 2 |
| Pages (from-to) | F5-F6 |
| ISSN | 1099-0062 |
| DOIs | |
| Publication status | Published - 2014 |