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<p>The development of disordered Li dendrite and the adverse reaction between Li and electrolyte impede practical use of Li metal batteries (LMB). Herein, we propose quasi-two-dimensional fluorinated metal-organic framework carbon (q2D-FcMOF) that is utilized to construct artificial solid electrolyte interface (ASEI) to achieve robust interfacial protective double-layer. The outer organic layer provides ample space for Li deposition, while the inner inorganic LiF layer promotes conduction of Li<sup>+</sup> and blocks electron transport. Metal clusters within the hybrid layer are uniformly dispersed, encouraging Li<sup>+</sup> to cluster around metal active sites that are thermodynamically compatible with Li. Consequently, q2D-FcZ8@Li symmetrical batteries demonstrate an ultralong cycle life over 3600 h. When paried with commercial cathodes, the cells exhibite cyclability under conditions of high-loading, lean-electrolyte, even exposure to air for some time. This research suggests an effective method for fabricating ASEI using 2D quasi-ordered superstructure MOF NPs, which is expected to the development of LMB.</p>

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Achieving burst Li+ channels via quasi-two-dimensional fluorinated metal-organic framework modulating functionalized interface

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月22日

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  • Lingchen Kong,
  • Yu Li,
  • Cong Peng,
  • Ziyue Zhao,
  • Junwei Xiao,
  • Yimin Zhao,
  • Wei Feng

摘要

The development of disordered Li dendrite and the adverse reaction between Li and electrolyte impede practical use of Li metal batteries (LMB). Herein, we propose quasi-two-dimensional fluorinated metal-organic framework carbon (q2D-FcMOF) that is utilized to construct artificial solid electrolyte interface (ASEI) to achieve robust interfacial protective double-layer. The outer organic layer provides ample space for Li deposition, while the inner inorganic LiF layer promotes conduction of Li+ and blocks electron transport. Metal clusters within the hybrid layer are uniformly dispersed, encouraging Li+ to cluster around metal active sites that are thermodynamically compatible with Li. Consequently, q2D-FcZ8@Li symmetrical batteries demonstrate an ultralong cycle life over 3600 h. When paried with commercial cathodes, the cells exhibite cyclability under conditions of high-loading, lean-electrolyte, even exposure to air for some time. This research suggests an effective method for fabricating ASEI using 2D quasi-ordered superstructure MOF NPs, which is expected to the development of LMB.