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August 15, 2026Small

Heterointerface Engineering for Stepwise Catalysis of Polysulfides in High Sulfur Loading Lithium‐Sulfur Batteries

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Authors

XLXiaojing LinCXCong XuWDWeihua Deng

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Overview

Experimental study demonstrates enhanced polysulfide conversion and cycling stability in high-loading lithium-sulfur batteries, suggesting a viable route for high-energy-density storage.

Key Points

  • To develop a multifunctional heterointerface sulfur host capable of stepwise polysulfide conversion and high sulfur loading to overcome sluggish redox kinetics and the shuttle effect in lithium-sulfur batteries.
  • Synthesized a nanoflower-structured CoS/Co9S8 heterojunction sulfur host derived from a metal-organic framework (MOF) template.
  • Constructed a hierarchical porous architecture with a built-in electric field at the p-n interface accommodating 84 wt.% sulfur loading.
  • Evaluated electrochemical performance, charge transfer dynamics, and long-term cycling stability in assembled lithium-sulfur cells.
  • Achieved a high discharge capacity of 1295.9 mAh g^-1 at 0.2 C.
  • Maintained an ultralow capacity decay rate of 0.069% per cycle over 300 cycles at 2 C.
  • Delivered a volumetric capacity of 1082.07 mAh cm^-3 under high sulfur mass loading.

Cite This Study

Lin et al. (2026) studied this question.

synapsesocial.com/papers/6a8019ce75c2e31742c85f89https://doi.org/10.1002/smll.75180
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1A Rational Design of a CoS2-CoSe2 Heterostructure for the Catalytic Conversion of Polysulfides in Lithium-Sulfur Batteries2023 · 9 citations
  2. 2Few‐Layer MoS <sub>2</sub> –Decorated MoO <sub>2</sub> for High‐Density Exposed Catalytic Heterointerfaces in Lithium–Sulfur Batteries2026
  3. 3MoC‐MoSe<sub>2</sub> Heterostructures as Multifunctional Catalyst Toward Promoting the Stepwise Polysulfide Conversion for Lithium‐Sulfur Batteries2024 · 117 citations
  4. 4Surface-Phosphided Metal Oxide Microspheres as Catalytic Host of Sulfur to Enhance the Performance of Lithium–Sulfur Batteries2024 · 11 citations
  5. 5Bimetallic Chalcogenides Enable Highly Efficient Polysulfide Capture and Conversion in Lean-Electrolyte Li-S Batteries2024