Hybrid Co/CoO/Ce-Doped WO<sub>3</sub> Nanoparticles on a ZIF-L Framework as Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries
Bibliographic record
Abstract
The rational design of multiphasic interfaces is an efficient way to fabricate favorable catalysts for bifunctional oxygen reduction and oxygen evolution reactions (ORR/OER). Herein, the hybrid metallic nanoparticles composed of Co, CoO, and Ce-doped WO 3 are anchored on the external surface of the preprepared catalysts ( PZF-2-700 ) by pyrolyzing a unique polyoxometalate (POM)-containing metal–organic framework (MOF) precursor. The multiple heterointerfaces in the PZF-2-700 material surface provide defects as the catalytic active sites for the OER. Besides, the Co and CoO with Co–N–C, N–C, and Co–O in PZF-2-700 afford efficient catalytic performance for the ORR. Furthermore, the strong built-in field of PZF-2-700 enables the heterointerfaces with opposite charges and facilitates the electron transfer capacity throughout the structure. Based on this, the produced PZF-2-700 exhibits a small potential gap of 679 mV between the ORR and the OER. The homemade zinc–air battery (ZAB) with PZF-2-700 as the cathode catalyst displays a power density of 146.9 mW cm –2 and a charge/discharge cycling stability for 311 h with a charge–discharge period of 10 min, which offers a promising cathode catalyst for environment-friendly ZABs.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.003 |
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".