Nitrogen-doped Graphene as an Active Electrocatalyst for Oxygen Reduction Reaction
Bibliographic record
Abstract
Nitrogen-doped graphene (NG) sheets are synthesized by thermal reduction and ammonia treatment of graphene oxide (GO). Scanning electron microscopy has revealed a voile-like morphology of NG sheets, which highly contrasts from the stacked layers observed with GO. X-ray photoelectron spectroscopy has verified successful nitrogen-doping of NG sheets, and Raman spectroscopy has confirmed a higher degree of deformation in NG sheets due to the incorporation of heterogeneous nitrogen atoms. To evaluate NG sheets as a highly active oxygen reduction reaction (ORR) electrocatalyst, half-cell electrochemical testing has been employed using rotating disk electrode (RDE) in an alkaline aqueous electrolyte. NG sheets demonstrate a pseudo four-electron pathway O2 reduction, and a comparable ORR performance to that of a commercial carbon supported platinum (Pt/C) catalyst. This excellent ORR activity of NG sheets is most likely due to the active sites created by nitrogen-doping in the graphene sheets.
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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 | 0.000 | 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 | 0.001 |
| 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 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".