Modulation of d‐orbital to realize enriched electronic cobalt sites in cobalt sulfide for enhanced hydrogen evolution in electrocatalytic water/seawater splitting
Bibliographic record
Abstract
Abstract Herein, a novel single‐atomic Pt doping and interface‐rich CoS/Co(OH) 2 (Pt‐CoS/Co(OH) 2 /C) electrocatalyst has been successfully prepared. Benefiting from precise regulation of d‐orbital electronic structure modulation on Co site, Pt‐CoS/Co(OH) 2 /C exhibited remarkable HER activity and high stability for hydrogen evolution in splitting both water (73 mV@10 mA·cm −2 ) and seawater (87 mV@10 mA·cm −2 ). Notably, atomic Pt doping was introduced into CoS/Co(OH) 2 , which could produce local unbalanced Coulombic force and significantly increased the number of S vacancies, and then expose abundant Co sites. Meantime, Co(OH) 2 in Pt‐CoS/Co(OH) 2 /C could act as the adsorption sites for H 2 O in hydrogen evolution reaction process. Density functional theory results also proved that atomic Pt doping, S vacancies and Co(OH) 2 coupling could result in the formation of enriched electronic Co sites and optimize orbital electronic structure, and then realize the depth upward shift of d‐band center and enhance the adsorption of H* on Co sites.
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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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".