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Tailoring WB morphology enables d-band centers to be highly active for high-performance lithium-sulfur battery

  • Yuwei Zhao
  • , Chang Liu
  • , Chenyang Zha
  • , Jing Li
  • , Chongguang Lyu
  • , Kaixi Wang
  • , Junfeng Li
  • , Kwan San Hui
  • , Linghai Zhang
  • , Kwun Nam Hui

    Research output: Contribution to journal › Article › peer-review

    22 Citations (Scopus)
    21 Downloads (Pure)

    Abstract

    The d-band centers of catalysts have exhibited excellent performance in various reactions. Among them, the enhanced catalytic reaction is considered a crucial way to power dynamics and reduce the "shuttle" effect in polysulfide conversions of lithium-sulfur batteries. Here, we report two-dimensional-shaped tungsten borides (WB) nanosheets with d-band centers, where the d orbits of W atoms on the (001) facets show greatly promoting the electrocatalytic sulfur reduction reaction. As-prepared WB-based Li-S cells exhibit excellent electrochemical performance for Li-ion storage. Especially, it delivers superior capacities of 7.7 mAh/cm2 under the 8.0 mg/cm2 sulfur loading, which is far superior to most other electrode catalysts. This study provides insights into the d-band centers as a promising catalyst of two-dimensional boride materials
    Original languageEnglish
    Article number108189
    JournalChinese Chemical Letters
    Volume34
    Issue number11
    Early online date3 Feb 2023
    DOIs
    Publication statusPublished - Nov 2023

    Keywords

    • Electrocatalysis
    • Lithium-sulfur battery
    • Nanosheet
    • Tungsten borides
    • d-band centers

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