Modulation of d‐orbital to realize enriched electronic cobalt sites in cobalt sulfide for enhanced hydrogen evolution in electrocatalytic water/seawater splitting
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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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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| 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) | 0.000 | 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