Controllable morphological transformations of nickel metal–organic frameworks for nickel–zinc batteries
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Constructing hierarchical nanostructures with highly exposed surfaces is a promising strategy for developing advanced cathode materials in aqueous batteries. Herein, we employed a competitive coordination strategy to optimize the characteristics of nickel metal–organic framework (Ni‐MOF). Specifically, the acetate ions were employed as precise regulators, exerting a distinct influence on the morphology of the Ni‐MOF and leading to a structural transition from a block structure to a two‐dimensional (2D) layered structure. The optimized Ni‐MOF exhibits a unique superstructure composed of hierarchical 2D layers assembled into flower‐like architectures. This distinctive superstructure increases the electrochemically active surface area of Ni‐MOF (N‐2) and provides abundant pathways for electron/ion transfer, thereby facilitating efficient electrochemical reactions. Remarkably, the assembled aqueous alkaline N‐2//Zn battery demonstrated enhanced specific capacity (0.446 mAh·cm −2 at 1 mA·cm −2 ) and excellent maximum energy/power density (0.789 mWh·cm −2 /17.262 mW·cm −2 ). This work not only offers valuable insights into regulating MOF morphology, but also makes a contribution toward enhancing the application potential of MOFs in aqueous batteries.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.009 | 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