Investigation of H2 and CO Oxidation on Ni-CeO2 Electrodes Using a Specially Designed Three-Electrode Configuration
Bibliographic record
Abstract
The electrochemical oxidation of H2 and CO was studied on Ni- CeO2 anodes using a specific cell design characterized by a Luggin-type reference electrode. The consistency of this configuration was verified theoretically using a numerical model. The oxidation rates were measured by cyclic- voltammetry and electrochemical impedance spectroscopy (EIS) at temperatures between 700 and 800{degree sign}C and at different H2 and CO partial pressures. EIS results were analyzed following a validation and deconvolution procedure. EIS fitting parameters were rationalized using a method developed for conventional Ni-YSZ anodes. Typically, two main arcs composed the complex impedance of Ni/CeO2. In H2, the charge transfer reactions were not limiting but the rate of the process related to the lower peak-frequency arc decreased with anodic overpotential, indicating diffusion limitations in this region. In CO, charge transfer limitations were evident. The design and procedure developed in this study is useful for characterizing the processes in SOFC anodes.
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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 | 0.001 |
| 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 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".