Investigation of Some New Palladium Alloys Catalysts for the Oxygen Reduction Reaction in an Acid Medium
Bibliographic record
Abstract
Active palladium-based alloys catalysts without platinum for the Oxygen Reduction Reaction (ORR) in an acid medium were shown for the first time. The catalysts were fabricated by sputtering method on a glassy carbon support and their electrochemical characteristics for the ORR were determined at 300C in sulphuric acid. with and without methanol. It was demonstrated that the base voltammograms (CVs) of Pd-Co alloys did not show significant change in the shape or size during the whole measurements procedure . Furthermore the Pd-Co alloy CV were found to be completely different from those of Pd and Co alone and they never changed to become more Pd-like or Co-like. The Pd-Co alloy catalysts are stable under the applied experimental conditions and no leaching out of the alloying Co atoms takes place. It was further demonstrated that an improvement of, at least, 250 mV in ORR over-voltage could be obtained if a Pd-Co28% catalyst is used instead of Pt for PEFC or acid Solid Polymer Electrolyser Applications. When compared to platinum, a significant improvement of the ORR was obtained on non-optimised Pd-alloys in an acid medium containing methanol. The interesting properties of the Pd-alloys for the ORR were attributed to an appropriate electronic stabilisation of the alloying element atom in the alloy which may prevent its corrosion and which allows the enhancement of its catalytic activity due to a bi-functional and/or co-catalytic behaviour of the alloying element.
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How this classification was reachedexpand
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 | 0.001 | 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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".