Figure 6. Electrochemical properties of shape-controlled RZnHCFs in 3M ZnSO₄ electrolytes.

The discharge curves at the rate of 60 mA g⁻¹ (black), 300 mA g⁻¹ (red), 600mA g⁻¹ (green), 1200 mA g⁻¹ (blue) and 3000 mA g⁻¹ (magenta) of (a) C-RZnHCF, (b) T-RZnHCF and (c) O-RZnHCF based on the initial discharge capacity. (d) Cycle life test of shape-controlled RZnHCFs at 300 mA g⁻¹. Red, green and blue circles represent C-RZnHCF, T-RZnHCF and O-RZnHCF, respectively.