Electrocatalyst Stability In PEMFCs And The Role Of Fuel Starvation And Cell Reversal Tolerant Anodes
Why this work is in the frame
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Bibliographic record
Abstract
Gross fuel starvation at the anode of a proton exchange membrane fuel cell (PEMFC) can result in cell reversal. High positive anode potentials are reached to sustain the current by water oxidation and carbon corrosion at the Pt based anode electrocatalysts. The membrane electrode assembly (MEA) is irreversibly damaged and the flow field plates and stack material in electrical contact with the MEA can be corroded. One of the best approaches to minimise the impact of fuel starvation is to build cell reversal tolerance into the MEA.Moving to more corrosion resistant carbon supports, adding Teflon to the anode catalyst layer to retain water, and deploying a water oxidation electrocatalyst in the anode significantly improved the cell reversal tolerance of the MEA.
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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