Nitrogen and Phosphorus Dual-Doped Silicon Carbide-Derived Carbon/Carbon Nanotube Composite for the Anion-Exchange Membrane Fuel Cell Cathode
Why this work is in the frame
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Bibliographic record
Abstract
Dual heteroatom (N,P)-doped catalysts based on the composite of silicon carbide-derived carbon (SiCDC) and carbon nanotubes (CNTs) or solely CNTs were prepared for oxygen reduction reaction (ORR) using melamine phosphate as nitrogen and phosphorus precursors. The half-cell test conducted by the rotating ring-disk electrode method exhibited a high ORR electrocatalytic activity for N,P-SiCDC/CNT with an onset potential of 0.91 V and a half-wave potential of 0.80 V in alkaline solution. Similar ORR results were obtained with N,P-CNT. The dual heteroatom-doped SiCDC/CNT composite as a cathode catalyst exhibited an impressive peak power density of 538 mW cm–2 in an anion-exchange membrane fuel cell (AEMFC) test. The superior AEMFC performance of this catalyst could be attributed to (i) the high specific surface area along with hierarchical porosity (micro/mesopores) as revealed by the N2 physisorption analysis, (ii) high defect density (ID/IG = 1.54) determined by Raman spectroscopy analysis, and (iii) successful doping of N and P moieties into the carbon materials as revealed by X-ray photoelectron spectroscopy and scanning transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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