Chromium Poisoning of LSM-YSZ SOFC Cathodes
Why this work is in the frame
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Bibliographic record
Abstract
Detailed chemical and surface structure analyses are presented for an 8 mol % yttria-stabilized zirconia (YSZ) wafer, partially covered with a thin, porous (LSM) film electrode, after being cathodically poisoned in the presence of a chromia source at 800°C. Under the conditions used, the newly deposited Cr-containing compounds were distributed not only in and around the electroactive LSM-YSZ-air triple-phase boundary (TPB) interface region, but also extending ca. 500 μm from the edge of the LSM film onto the YSZ surface. The distribution and structure of the Cr species on the YSZ surface was directly correlated with variations in the cathodic polarization of the half-cell for a solid oxide fuel cell (SOFC). Such structuring was not anticipated, considering that the electrochemical activity is thought to occur only at the LSM-YSZ-air TPB. Evidence presented here suggests that plays an important role in extending the electroactive LSM-YSZ-air TPB out onto the YSZ surface by effectively creating a new -YSZ-air TPB region. © 2004 The Electrochemical Society. All rights reserved.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it