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![Recent progress on alloy-based anode materials for potassium-ion batteries](https://image.oaes.cc/c92010da-4da9-4ba3-9174-293a7dd7d14f/5373.fig.6.jpg)
Figure 6. (A) Schematic illustration and (B) TEM images of Bi@porous carbon composite[64]. Copyright 2019, Wiley-VCH. (C) Schematic illustration of synthetic procedure and (D) TEM images of C@DSBC. (E) Schematic illustration of superior electrochemical performance of C@DSBC under high current density[60]. Copyright 2019, Elsevier. (F) Schematic illustration of synthesis procedure for Bi@3D graphene foams (GFs)[63]. Copyright 2019, Royal Society of Chemistry. (G) Schematic illustration of synthesis of Bi@N-C composite. (H) Rate performance of Bi@N-C and Bi anodes from 1 to 30 A g-1 and (I) long-term cycling stability of Bi@N-C and Bi anodes at high rates of 5 and 10 A g-1[65]. Copyright 2020, Royal Society of Chemistry.