Characterizations of LBC-GDC Composite Cathodes for Low Temperature SOFCs
Bibliographic record
Abstract
This study reports on the physico-electro-chemical characterization of porous composite electrodes made of lanthanum-barium-cobalt oxide (LBC) electrocatalyst and gadolinium-doped-cerium oxide (GDC) oxygen-ion conductor. Four different compositions of LBC-GDC composite electrodes were fabricated and heat-treated at 1150°C. The phase purity of the heat-treated LBC-GDC composite was checked by X-ray diffraction measurements. Thermal expansion coefficient (TEC) was measured from room temperature to 900°C. Porous LBC-GDC composite electrodes were studied in a symmetrical cell configuration by impedance spectroscopy where gadolinium doped ceria (GDC) was used as a solid electrolyte. Impedance spectra obtained at zero dc bias conditions consisted of two semi-circular arcs, which indicate that the overall oxygen reduction comprises at least two distinct processes. The area specific resistance (ASR) for electrode polarization was measured in the 600–800°C temperature ranges. The lowest ASR value of 0.06 Ω cm−2 at 600°C was exhibited by LBC/GDC composite of composition 60/40. The ASR values at lower temperatures offer the promise of utilizing composite as a cathode for low-temperature SOFCs.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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 | 0.001 | 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".