Investigation of Sr-doped and Sr-free LaMn<sub>1-y</sub>CryO<sub>3{plus minus}δ</sub> Perovskites as Sulfur Tolerant SOFC Anodes
Bibliographic record
Abstract
Sr-doped and Sr-free La1-xSrxMn1-yCryO3{plus minus}δ (LSMC) perovskite-type oxides were synthesized and tested for use as intermediate temperature anodes for SOFC applications. Thermo-chemical and chemical stabilities were tested in hydrogen and low ppm H2S: H2 at 800åC. Relative reducibility was determined by temperature program reduction using thermo-gravimetric analysis. This was correlated with oxygen non-stoichiometry determined by permanganate titration. The final phase after reduction at 1100åC was determined by powder X-ray diffraction and the ability of these materials to recover after reduction was tested by re-sintering in air. Electrochemical testing revealed catalytic activity towards hydrogen as a function of changing sintering temperature and operating temperature, as well as Sr and Cr content LSMC materials were found to be chemical stable in upto 10 ppm H2S in humidified hydrogen at 800åC, and Sr-free LMC materials were shown to have reasonable catalytic activity towards the hydrogen oxidation reaction at 700 and 800åC.
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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) | 0.000 | 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 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".