Performance of Ethane/Oxygen Fuel Cells Using Yttrium-Doped Barium Cerate as Electrolyte at Intermediate Temperatures
Bibliographic record
Abstract
Fuel cells having proton conducting membranes comprising doped barium cerate ceramic BaCe 0.85 Y 0.15 O 3- α (BCY15) as electrolyte and platinum as both anode and cathode electrodes performed well for conversion of ethane to ethylene at 650 and 700 °C. No deterioration in performance occurred during 20 days of operation at 700 °C. The electrolyte was stable, and the membrane remained a single perovskite phase after long-term testing. Current density at maximum power density increased with temperature from 650 to 700 °C at ethane flow rates of 100−200 mL/min. A better seal and consequently a better performance were obtained when the sealant was under compression, achieved by operating the cell in vertical attitude. Power density of 120 mW/cm 2 was attained at current densities in the range 300−650 mA/cm 2 at 700 °C and ethane flow rate 100 mL/min. There was good agreement between current and change in gaseous composition across the anode. The protonic current arose in two ways: by conversion of hydrogen arising from dehydrogenation of ethane, and by electrochemical conversion of ethane. At 650 °C the former is the major reaction path, while at 700 °C the latter is the major path.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".