fig2

Figure 2. Illustration of the preparation, morphology and performance of 3D hierarchical nanostructures. (A1 and A2) SEM images of the synthesized mesoporous MoSe₂ materials using SBA-15 as the template via nanocoating method. Reproduced with the permission of Ref.^[53] Copyright 2012, John Wiley & Sons. (B) Synthetic schematic of SNW/S and working mechanism of LiPSs trapping. Reproduced with the permission of Ref.^[55] Copyright 2021, IOPScience. (C) Schematic illustration for the preparation process of u-MnO and u-MnO/C. Reproduced with the permission of Ref.^[62] Copyright 2021, Springer Nature. (D) Concise preparation schematics of the Si@MnO₂@reduced graphene oxide (rGO) composites and long-term cycling performance of the Si@MnO₂@rGO-50 °C at 1 A g^-1. Reproduced with the permission of Ref.^[63] Copyright 2022, MDPI Journals. (E1) SEM image of Si@NiO; (E2) Enlarged SEM image of Si@NiO composite. (E3) Schematic diagram of the preparation of Si@NiO/rGO composite and long-term cycling performance of Si, Si@NiO, and Si@NiO/rGO at 0.1 A g^-1. Reproduced with the permission of Ref.^[68] Copyright 2023, Elsevier.