fig2

Figure 2. Illustration of the processes used to synthesize alloy anode for PIBs: (A) high-energy ball milling. Reprinted with permission from Ref.^[25]. Copyright 2021, Elsevier. (B) hydrothermal. Reprinted with permission from Ref.^[29]. Copyright 2022, American Chemical Society. (C) electrospinning. Reprinted with permission from Ref.^[36]. Copyright 2021, John Wiley and Sons. (D) sol-gel. Reproduced from Ref.^[41] with permission from the Royal Society of Chemistry. (E) freeze-drying. Reprinted with permission from Ref.^[42]. Copyright 2020, American Chemical Society.