Fig. 4.

Excellent lithium-storage performance of as-prepared Sb₂S₃ electrodes. a CV curves of Sb₂S₃-150 electrode for the first three cycles at a scan rate of 0.1 mV s⁻¹. b Rate performance of Sb₂S₃-120, Sb₂S₃-150, and Sb₂S₃-180 electrodes at various current densities from 50 to 5000 mA g⁻¹. c Selected charge/discharge voltage profiles of Sb₂S₃-150 electrode at different current densities (increased from 50 to 5000 mA g⁻¹). d Cycling performance of Sb₂S₃-120, Sb₂S₃-150, and Sb₂S₃-180 electrodes at different current densities. e Selected charge/discharge voltage profiles of Sb₂S₃-150 electrode at a current density of 200 mA g⁻¹. f Cycling performance of Sb₂S₃-120, Sb₂S₃-150, and Sb₂S₃-180 electrodes at a current density of 1000 mA g⁻¹. g Three-dimensional Nyquist plots of Sb₂S₃-120, Sb₂S₃-150, and Sb₂S₃-180 electrodes at the open-circuit voltage. h Three-dimensional Nyquist plots of Sb₂S₃-120, Sb₂S₃-150 and Sb₂S₃-180 electrodes at a current density of 500 mA g⁻¹ after 50 cycles. i The equivalent circuit model