Elemental Sulfur Nanoparticles Chemically Boost the Sodium Storage Performance of MoS<sub>2</sub>/rGO Anodes
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Bibliographic record
Abstract
Abstract The critical role of sulfur nanoparticles in stabilizing MoS 2 supported on reduced graphene oxide as anode material for sodium‐ion batteries is discovered. The MoS 2 supported on reduced graphene oxide decorated with sulfur particles (∼50 nm) is in‐situ synthesized using an ammonium molybdate/graphene oxide preform and sublimed sulfur through a facile chemical vapor deposition process in a tube furnace with 2 temperature‐controlled zones. Although the sulfur particles show no positive effect when the material is tested as anode for Li‐ion batteries, they significantly improve the Na storage performance in terms of both, total specific capacity and cycle life. A stable high capacity of 580 mAh g −1 and an extremely low capacity fade of 94 μAh g −1 cycle −1 make the designed assembly one of the best‐performing MoS 2 ‐based anode materials for sodium‐ion batteries so far. The post‐cycling analysis reveals that the elemental sulfur nanoparticles play two roles: during the intercalation of Na in‐between the layers of MoS 2 (above 1.0 V), they function as blockers and inhibit the aggregation of MoS 2 ; in the conversion reaction stage, the sulfur nanoparticles chemically participate in the Na storage process by forming Na 2 S 5 ‐rich compounds, which eventually improve the reversibility of the conversion reaction and thereafter the cycling performance.
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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 | 0.000 |
| 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 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
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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