Coordination‐etching fabrication of ZIF‐67‐derived nickel–cobalt layered double hydroxides for aqueous Ni‐Zn batteries
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Bibliographic record
Abstract
Abstract Aqueous zinc‐based batteries (ZBBs) are promising for grid‐scale energy storage owing to their safety and cost‐effectiveness; however, their practical application is hindered by rapid capacity fading and unstable cathodes caused by sluggish Zn 2+ kinetics and structural degradation in alkaline electrolytes. Herein, to address these challenges, we utilize amphiphilic polymer (PVP) to realize the composite of nickel‐based complexes and ZIF‐67. The hierarchical nickel–cobalt layered double hydroxide (NiCo‐LDH) was prepared by metal ion exchange strategy. PVP‐mediated‐mediated suppression of agglomeration, combined with Ni 2+ ‐induced framework reconstruction, synergistically modulated the morphology, resulting in mesoporous nanosheets with hydroxyl‐rich surfaces. This design generated high‐valence Co 3+ species through charge‐compensation‐driven oxidation, thereby significantly accelerating Zn 2+ ion diffusion and reducing the interfacial resistance. The optimized NiCo‐LDH‐100 cathode (Ni:Co = 3:1) achieves cycling stability and exceptional energy/power densities (0.49 mWh cm –2 /49.1 mW cm –2 ). This study provides a solution for the cathode instability of Ni‐Zn batteries through a coordination‐derivatization strategy, which is promising for advancing sustainable energy storage technologies.
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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 | 0.000 | 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 it