An Organometallic Chelated Electrolyte Based on 5‐Sulfosalicylic Group Coordination for Elevated Performance in Aqueous Zinc‐Ion Batteries
Bibliographic record
Abstract
Abstract In aqueous ZnSO 4 electrolyte, the highly reactive water ligands induce severe dendrite formation, hydrogen evolution reaction (HER), and zinc anode corrosion, significantly hampering the plating/stripping efficiency and cycling durability of aqueous zinc‐ion batteries (AZIBs). To address these challenges, a metal‐organic chelated electrolyte is developed utilizing 5‐sulfosalicylic acid (SA) group coordinated zinc salt (ZSA). Theoretical calculations reveal that the lowest unoccupied molecular orbital (LUMO) of ZSA is predominantly localized on the SA 2− ligand rather than on H 2 O, resulting in reduced activity of coordinated H 2 O. Consequently, the ZSA electrolyte exhibits significantly enhanced Zn plating/stripping reversibility compared to conventional ZnSO 4 electrolyte. Zn//Zn symmetric batteries employing the ZSA electrolyte achieve a cycling life exceeding 1400 h, while Cu//Zn asymmetric batteries using the electrolyte attain an average Coulombic efficiency of 99.1%, outperforming ZnSO 4 ‐based electrolyte. Microscopy and electrode‐electrolyte interface studies confirm that ZSA electrolyte effectively suppresses Zn dendrite growth, HER, and zinc anode corrosion. A demonstrated poly(1,5‐diaminonaphthalene) (1,5‐PDAN)//Zn battery employing the ZSA electrolyte exhibits an ultralong lifespan of over 7500 cycles, maintaining a capacity retention above 71% at 1.0 A g −1 . This study highlights the significant potential of rationally designed metal‐organic complex electrolytes in developing cost‐effective, long‐cycling, and environmentally friendly aqueous multi‐valent secondary batteries.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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".