La0.6Sr0.4Co0.2Fe0.8O3 - Ce0.8Sm0.2O2−δ Composite Cathode for Operation Below 600°C
Bibliographic record
Abstract
Composite cathodes of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 and Ce 0.8 Sm 0.2 O 2−σ were evaluated by impedance analysis for assessing their potential for utilization in intermediate temperature solid oxide fuel cells operating at temperatures below 600°C. The composite cathodes were formed onto Ce 0.8 Sm 0.2 O 2−σ electrolytes by spraying suspensions of submicron-scale composite cathode powders and then firing the coated electrolyte pellets in air. Impedance measurements showed that the electrode resistances of the composite cathodes have a dependence on their firing temperatures. The composite cathodes of 70 wt% La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 and 30 wt% Ce 0.8 Sm 0.2 O 2− σ fired at 750 or 850°C were found to achieve area specific resistances of 0.3 Ωcm 2 at around 590°C, and 0.5 Ωcm 2 at 565°C, respectively, while the composite cathode fired at 950°C showed nearly one order of magnitude higher resistance values.
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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 | 0.001 | 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) | 0.020 | 0.005 |
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".