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Figure 10. (A) TEM images and selected area electron diffraction patterns of mesoporous Si sponge particles at different lithiation states. Reproduced with permission[102] (Copyright 2014, Nature Publishing Group). (B) SEM images of macroporous Si structure. (C) Cycling performance of porous Si/Al2O3 composite at C/5. Reproduced with permission[105] (Copyright 2015, Elsevier B.V.). (D) SEM images of porous Si. (E) Cycling performance of different porous Si samples at 500 mA g-1. (F) Volume changes can be restricted by porous construction during cycling. Reproduced with permission[131] (Copyright 2019, Elsevier Inc.).
