Modeling the Effect of Low Carbon Conductivity of the Cathode Catalyst Layer on PEM Fuel Cell Performance
Why this work is in the frame
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Bibliographic record
Abstract
Carbon corrosion is a major degradation mechanism in cathode catalyst layers (CCL) of PEM fuel cells. Carbon corrosion causes carbon particles to decrease in size and the ionomer to carbon ratio to increase. One of the consequences of these changes is the reduced electronic conductivity of the carbon phase in CCL. In the present study, the effect of reduced carbon conductivity on the cell performance was investigated through modeling of two experimental case studies of a fresh and a severely degraded CCL. The critical carbon conductivity of CCL, below which the electronic potential loss in a degraded CCL becomes an important contributing loss, is defined. The inter-relations between low carbon conductivity, electronic ohmic loss, and EPSA loss (through Pt/C particles detachment mechanism) are also discussed.
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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 | 0.000 | 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 it