Grotthuss Mechanism for Stable Zinc Anodes: Time‐Resolved pH Buffering in Aqueous Batteries
Bibliographic record
Abstract
Abstract In zinc ion batteries, the curtailed lifespan and diminished Coulombic efficiency are primarily ascribed to the hydrogen evolution reaction, surface corrosion, and rampant dendrites, all related to unstable interfacial pH at the anode. To tackle these challenges, hydrogen‐bonded organic frameworks (HOFs) are designed possessing outstanding zincophilic and hydrogen storage capabilities on the surface of Zn, thereby creating a dendrite‐free anode (MACA@Zn). By leveraging the innate and reversible proton‐hopping mechanism of MACA, the interfacial pH at the anode is able to be controlled. In situ scanning electrochemical microscopy has demonstrated a time‐resolved local pH buffering effect. Moreover, the presence of MACA induces preferential growth of the (002) plane, resulting in a uniform and dense Zn deposition layer. Consequently, the Zn//Zn cell with MACA@Zn anode delivers an exceptional cycling stability of ≈2000 h at 5 mA cm −2 and 1 mAh cm −2 , with a high cumulative plating capacity of 4950 mAh cm −2 . When paired with an α‐MnO 2 cathode, the cell retains a specific capacity of 70.4 mAh g −1 after 990 cycles, demonstrating a capacity retention of 44.87%. This research emphasizes the multifunctional protective effects of HOFs on the anode surface and offers critical insights for advancing the development and real‐world implementation of ZIBs.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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".