Dendritic Ag Electrocatalyst with High Mass-Specific Activity for Zero-Gap Gas-Fed CO<sub>2</sub> Electroreduction
Bibliographic record
Abstract
Electrodeposited silver catalyst is attractive compared to commercially available silver nanoparticles because it allows for the investigation of catalyst morphology and crystallography on the performance of CO 2 electrolyzer for the conversion of CO 2 to CO. In this work, Ag electrodes with different Ag structures varying from polycrystalline to dendrite were fabricated by controlling different electrodeposition parameters: deposition voltage, ethylenediamine additive and ammonium sulfate concentration, and time of deposition. The electrode performance was evaluated in a zero-gap, gas-fed, polymer electrolyte membrane-based cell. The highest mass-specific activity of 362 mA·mg Ag –1 and a CO selectivity of 94% at a cell potential of 3 V were achieved for dendritic Ag catalyst (0.29 mg·cm –2 ) that possessed the maximum (220)/(111) facet ratio, as determined by X-ray diffraction. The long-term durability test on the electrode demonstrated a robust performance after 100 h of CO 2 reduction at a 3 V cell voltage.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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".