Strongly‐Interacted NiSe<sub>2</sub>/NiFe<sub>2</sub>O<sub>4</sub> Architectures Built Through Selective Atomic Migration as Catalysts for the Oxygen Evolution Reaction
Bibliographic record
Abstract
Abstract The interactions between the catalyst and support are widely used in many important catalytic reactions but the construction of strong interaction with definite microenvironments to understand the structure‐activity relationship is still challenging. Here, strongly‐interacted composites are prepared via selective exsolution of active NiSe 2 from the host matrix of NiFe 2 O 4 (S‐NiSe 2 /NiFe 2 O 4 ) taking advantage of the differences of migration energy, in which the NiSe 2 possessed both high dispersion and small size. The characteristics of spatially resolved scanning transmission X‐ray microscopy (STXM) coupled with analytical Mössbauer spectra for the surface and bulk electronic structures unveiled that this strongly interacted composite triggered more charge transfers from the NiSe 2 to the host of NiFe 2 O 4 while stabilizing the inherent atomic coordination of NiFe 2 O 4 . The obtained S‐NiSe 2 /NiFe 2 O 4 exhibits overpotentials of 290 mV at 10 mA cm −2 for oxygen evolution reaction (OER). This strategy is general and can be extended to other supported catalysts, providing a powerful tool for modulating the catalytic performance of strongly‐interacted composites.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 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 | 0.001 |
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".