Surface Hydroxyl Relay Promotes Acidic Water Oxidation
Bibliographic record
Abstract
Ruthenium (Ru) is a promising iridium (Ir) alternative for proton exchange membrane water electrolysis (PEMWE), but Ru-based catalysts face an OER stability issue in acidic conditions. We addressed this using a hydroxyl relay strategy on RuO 2 surfaces via boron (B) doping. The three-coordinate B sites with empty p orbitals readily form coordination bonds with hydroxyl groups. These B sites relay *OH to neighboring Ru sites, facilitating the formation of the OOH intermediate, lowering the OER energy barrier, and preventing Ru overoxidation. Furthermore, the B dopants create a robust B–O–Ru local structure, which significantly stabilizes the catalyst framework. Consequently, the B-doped RuO 2 nanosheets (B-RuO 2 NS) show an ultralow overpotential (190 mV at 10 mA cm –2 ) and exceptional stability (1600 h at 10 mA cm –2, 200 h at 1 A cm –2 ). This work demonstrates how targeted hydroxyl relay engineering can simultaneously enhance activity and stability, offering a viable pathway to develop high-performance and durable Ru catalysts for industrial PEMWE applications.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 |
| 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 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".