fig13

Figure 13. (A) SEM images of porous Ge microcubes. (B) Cycling performance of porous Ge microcubes. Reproduced with permission^[148] (Copyright 2015, American Chemical Society). (C) SEM of mesoporous Ge. (D) Cycling performance of Ge (ZnRR) electrodes. Reproduced with permission^[150] (Copyright 2017, Wiley-VCH Verlag GmbbH & Co.). (E) Top view of pGe with 18.05% porosity and one surface Li. In the lower panel, the process of the gradual lithiation is shown with one, four, and twenty Li surface atoms in sequence. Green, white and purple balls represent Ge, H, and Li atoms, respectively. (F) Band gap evolution as a function of the porosity of fully H passivated pGe (dark squares) and pGe with one (red circles) and two (blue triangles) Li atoms. Reproduced with permission^[152] (Copyright 2020, John Wiley & Sons Inc.).