fig14
![Recent advances and perspectives of microsized alloying-type porous anode materials in high-performance Li- and Na-ion batteries](https://image.oaes.cc/e5a27bfe-a8ab-45f1-8d99-a2e3af359ad9/4937.fig.14.jpg)
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).