Bibliographic record
Abstract
The degradation of Ni-YSZ composite anodes in a single solid oxide fuel cell (SOFC) running on humidified H 2 containing 10 ppm H 2 S, at 800°C, has been investigated, both at the open circuit potential (OCP) and under load. With exposure to H 2 S at the OCP, the series resistance (electrolyte plus interfacial contacts) and especially the polarization resistance increase with time. Anode degradation is enhanced when exposure occurs under a load, and the higher the current density, the more rapid the loss of performance, without reaching a steady-state. Partial or full recovery of the H 2 S-poisoned Ni-YSZ anode, determined by the extent of lowering of the series and polarization resistance, was achieved by exposure to pure H 2 , N 2 or air at the OCP. Greater than 90% recovery was obtained in N 2 or air, while only ~75 % recovery could be achieved in H 2 . Overall, the results indicate that the reversible component of H 2 S poisoning is caused by the blocking of the active Ni-YSZ sites by adsorbed sulfur or H 2 S, while the small, irreversible component may be due to the formation of a Ni-S compound in some areas within the anode structure.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".