Investigating the Effect of Non-Uniform Microporous Layer Intrusion on Oxygen Transport in Dry and Partially Saturated Polymer Electrolyte Membrane Fuel Cell Gas Diffusion Layers
Why this work is in the frame
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Bibliographic record
Abstract
Pore network modelling was utilized to simulate the oxygen transport behavior and water saturation within stochastically generated gas diffusion layers (GDLs) at various liquid water inlet conditions. The oxygen diffusion coefficient in dry conditions was found to linearly decrease as a function of the MPL intrusion depth into the GDL. In partially saturated conditions, increasing MPL intrusion minimized the fluctuations in both oxygen diffusion coefficient and breakthrough saturation over the range of sparse inlet conditions (7% inlet face coverage) to flooded inlet conditions (80% inlet face coverage). Breakthrough saturation was highly dependent on MPL intrusion depth with flooded liquid water inlet conditions compared to sparse liquid water inlet conditions. This study suggests that when the GDL is invaded by liquid water through cracks in the MPL, preferential MPL configurations exist for improving oxygen transport and minimizing substrate saturation given particular inlet conditions.
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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