Hydrogen/oxygen polymer electrolyte membrane fuel cell (PEMFC) based on acid-doped polybenzimidazole (PBI)
Why this work is in the frame
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Bibliographic record
Abstract
The potential-current characteristics of a H 2 /O 2 polymer electrolyte membrane fuel cell using H 2 SO 4 or H 3 PO 4 doped PBI were studied for the first time. The conditions involved in the doping of PBI with sulphuric acid or phosphoric acid and the preparation of a membrane electrode assembly (MEA) using these membranes were determined. The potential-current fuel-cell characteristics of MEAs using H 2 SO 4 -doped PBI were compared to those of MEAs using Nafion 117. The effects of membrane doping and of drying times on the fuel-cell performances of MEAs based on PBI doped with sulphuric acid in various conditions were determined. It was shown that MEAs based on H 2 SO 4 - doped PBI and non-humidified exhibited higher fuel-cell characteristics than MEAs based on Nafion 17. The fuel-cell characteristics of MEAs based on phosphoric-acid-doped PBI exhibited high performances at 185 oC even with fuelled with hydrogen containing 3% CO.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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