fig14

Figure 14. (A) SEM images of porous Ge microparticles. (B) Galvanostatic charge-discharge curves of porous Ge microparticles. Reproduced with permission^[155] (Copyright 2019, Elsevier). (C) SEM image of mesoporous A-Ge microparticles. (D) Rate capability from 0.2 to 5 C of A-Ge. In-situ Raman spectrum of (E) crystalline and (F) amorphous Ge during the first discharge/charge curve. Reproduced with permission^[156] (Copyright 2019, Tsinghua University Press).