Carbon and Sulfur Poisoning in SOFC Anodes: Ni<sub>0.7</sub>Co<sub>0.3</sub>-YSZ Performance with Hydrocarbons, Alcohols and Biodiesel Fuels Containing H<sub>2</sub>S
Bibliographic record
Abstract
The poisoning behavior of hydrogen sulfide at the concentrations presented has the effect of lessening the amount of coke formation experienced at the anode site of the active Ni0.7Co0.3-YSZ cermet. Although the effect of coke formation becomes more dramatic and detrimental to the cell as the length of the hydrocarbon chain increases, the ability of the hydrogen sulfide to protect the anode against coke formation also increases, producing a smaller reduction in exchange current density with increasing hydrocarbon length. For the case of biodiesel fuel, at a concentration of 5 % hydrogen sulfide, the exchange current density is higher and the cell survives much longer than with pure biodiesel fuel. Hydrogen sulfide also has the effect of increasing the lifetime of the cell to be several times that of the pure hydrocarbon fuel.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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".