Surfactant Assisted Catalyst Layer Deposition for PEM Fuel Cells
Bibliographic record
Abstract
The potentiostatic electrodeposition of platinum onto gold coated Si wafers and a gold rotating disk electrode (RDE) was carried out with non-ionic surfactants that functioned as templating agents to obtain mesoporous deposits with size features in the nanometer range. The particle size and morphology were studied by surface analysis (SEM and AFM). The electrochemically active surface area of Pt electrodeposited onto the RDE by using a mixture of Brij 56 and n-heptane was increased by a factor of ~2 compared to Pt deposited without structure directing additives. Corresponding oxygen reduction tests at 2500 rpm revealed an improvement of about 14 % (from 5.9 to 7.2 x 10-4 A cm-2) for the cathodic current density at 0.9 V vs. RHE while the mass transfer limited current density was increased by ~25 % from 4.4 to 5.5 x 10-3 A cm-2.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".