Natural nacre,consisting of 95 vol％ inorganic aragonite plate-lets and 5 vol％ organic matrix,integrates high strength and high toughness because of its unique layered structure and abundant interfacial interactions [1].Inspired by nacre,numerous high-per-formance layered materials based on two-dimensional (2D) plate-lets,such as graphene,calcium carbonate,montmorillonite,aluminum oxide,hydroxyapatite,and titanium carbide MXene,have been fabricated in the past decades [2-8].These nacre-inspired layered materials could be potentially used as load-bear-ing structural materials,ion transport channels,gas barrier materi-als,flexible electrodes,and electromagnetic interference (EMI)shielding materials,among many others.The performance of these materials is determined by several factors,such as the alignment of the platelets,the interlayer interaction,and the compactness of the whole structure.Many assembly strategies,such as wet spinning,stretching,continuous centrifugal casting,and superspreading,have been developed to effectively align 2D platelets [6].Addition-ally,it has been systematically investigated that the interlayer interactions of adjacent 2D platelets can be strengthened by vari-ous interfacial bridging effects,such as hydrogen bonding,ionic bonding,π-π stacking interaction,and covalent bonding [8].

Li-Bo Mao;Shu-Hong Yu

Division of Nanomaterials and Chemistry,Hefei National Laboratory for Physical Sciences at the Microscale,Institute of Energy,Hefei Comprehensive National Science Center,Department of Chemistry,Institute of Biomimetic Materials and Chemistry,University of Science and Technology of China,Hefei 230026,China

科学通报（英文版）

[1]Li-Bo Mao;Shu-Hong Yu-.Detecting and curing the voids in nacre-inspired layered MXene films)[J].科学通报（英文版）,2022(04):347-349

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