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<p>When nanoclusters crystallize, weak supramolecular interactions lead to the formation of independent monomers (zero-dimensional molecular nodes), while strong intermolecular coordination promotes omnidirectional crystal packing into three-dimensional superstructures. However, achieving two-dimensional (2D) crystalline assembly, such as 2D grid networks, is more challenging. Here we achieve the 2D crystalline assembly of atomically precise metal nanoclusters by establishing intermolecular interactions between the peripheral carboxyl groups of cluster-based nodes and introduced alkali metal cations, forming an alkali metal-dependent and solvent-dependent 2D crystalline assembly. We also observe that the intercluster or interlayer alkali metal cations are mobile, allowing the materials to serve as cation sponges. The high ionic mobility of the cluster-based crystalline materials renders them efficient electrolytes for Li-ion batteries. Overall, these 2D assemblies of atomically precise crystalline nanoclusters provide a versatile platform for ion conduction and energy transmission.</p><p></p>

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Atomically defined two-dimensional assembled nanoclusters for Li-ion batteries

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Xiao Wei,
  • Zhou Huang,
  • Ximei Sun,
  • Haoqi Li,
  • Zhenjie Sun,
  • Qing Tang,
  • Lingyun Zhu,
  • Xi Kang,
  • Manzhou Zhu

摘要

When nanoclusters crystallize, weak supramolecular interactions lead to the formation of independent monomers (zero-dimensional molecular nodes), while strong intermolecular coordination promotes omnidirectional crystal packing into three-dimensional superstructures. However, achieving two-dimensional (2D) crystalline assembly, such as 2D grid networks, is more challenging. Here we achieve the 2D crystalline assembly of atomically precise metal nanoclusters by establishing intermolecular interactions between the peripheral carboxyl groups of cluster-based nodes and introduced alkali metal cations, forming an alkali metal-dependent and solvent-dependent 2D crystalline assembly. We also observe that the intercluster or interlayer alkali metal cations are mobile, allowing the materials to serve as cation sponges. The high ionic mobility of the cluster-based crystalline materials renders them efficient electrolytes for Li-ion batteries. Overall, these 2D assemblies of atomically precise crystalline nanoclusters provide a versatile platform for ion conduction and energy transmission.