Sintering Effects on Proton Conductivity of Ta-Doped Ba[sub 2](CaNb)[sub 2]O[sub 6] and its Reactivity with SOFC Cathodes
Bibliographic record
Abstract
The effect of preparation temperature on electrical conductivity of , , and was investigated in air and humidified and . Powder X-ray diffraction (PXRD) showed the formation of double-perovskite-type structure. Among the compounds investigated, showed the highest proton conductivity of 3.7 and at in wet , respectively, for a 1400 and sintered sample, while no change in conductivity was observed in air. PXRD showed that is stable against chemical reaction with (LSM) and (SSC) electrodes at 800 and . Chemical compatibility was further confirmed by energy-dispersive X-ray (EDX) analysis. The ac impedance employing Pt, LSM, and SSC electrodes on showed that the area specific polarization resistance (ASPR) decreased in wet atmospheres compared to that of air. Unlike the oxide ion system, the ASPR was found to be much higher for the presently investigated proton system, suggesting that proton conductivity at the electrolyte and electrode interfaces or water effusion through microspores appears to control the ASPR. Among the electrodes tested, based on ac impedance studies, the LSM appears to be a better electrode compared to SSC for Ta-doped electrolyte.
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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) | 0.001 | 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 | 0.001 |
| 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".