fig2
![Challenges and design strategies for alloy-based anode materials toward high-performance future-generation potassium-ion batteries](https://image.oaes.cc/3469d828-8b78-407a-abc5-fce61d96abab/5698.fig.2.jpg)
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.