Synergistic Effect of VS<sub><b>2</b></sub>/MoS<sub><b>2</b></sub> as an Electrocatalyst for Accelerating Polysulfide Conversion in Lithium–Sulfur Batteries
Bibliographic record
Abstract
High Resolution Image Download MS PowerPoint Slide The shuttle effect of soluble lithium polysulfides (LiPSs) poses a formidable challenge that severely compromises the electrochemical performance of lithium–sulfur (Li–S) batteries. This study introduces a unique lamellar stacked VS 2 /MoS 2 nanoflower structure, prepared using a simple one-step hydrothermal synthesis method, to reduce the polysulfide shuttle effect in Li–S batteries. VS 2 /MoS 2 synergistically boosts LiPS conversion, combining VS 2 ’s high conductivity with the catalytic activity of MoS 2, as confirmed by density functional theory (DFT) calculations. Electrochemical testing demonstrated excellent performance for VS 2 /MoS 2 @S cathodes. It delivers an initial discharge-specific capacity of 1353 mAh g –1 at 0.1 C, and at 1 C, the capacity remains as high as 925 mAh g –1 . At 0.2 C, the initial discharge-specific capacity is 1299 mAh g –1, and the capacity retention rate reaches 55% after 500 cycles. This study provides valuable insights into designing and engineering high-performance heterostructures to enhance the adsorption of LiPSs and improve the reaction kinetics in Li–S 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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| 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 | 0.001 | 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".