Mastering cathode and anode electrolyte interphases for vanadium-based zinc batteries via solvation structure control
Bibliographic record
Abstract
Metallic zinc-based anodes often encounter challenges such as dendrite growth, side reactions, and by-product generation, leading to diminished reversibility. This study introduces a novel approach by introducing methyl acetate as a cosolvent into an aqueous electrolyte based on Zn(OTf)2 through a salting-in effect. Regulating the solvation sheath structure of Zn2+ enables the formation of cathode electrolyte interphase and anode electrolyte interphase, enhancing the stability of the vanadium-base cathode and zinc metal anode, respectively. The incorporation of this cosolvent allows for prolonged operation of Zn//Cu half-cells for over 1500 cycles with the average columbic efficiency of 99.82% under a current density of 1 mA cm-2. When zinc anodes are paired with NaV3O8·1.5H2O cathodes, a remarkable 80% of the capacity can be maintained after 1500 cycles under a current density of 1 A/g. Furthermore, even under conditions of a 6 mg cm-2 mass loading and a negative to positive ratio of 3, the full battery demonstrates 77% capacity retention after 300 cycles. This dual-interphase strategy provides valuable insights into advancing the stability of vanadium-based zinc metal 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 | 0.000 | 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".