Figure 11

(a) CV curves at 10 mV s⁻¹, (b,c) CV curves at different scan rates, and (d) charge-discharge curves at 4 A g⁻¹ of the pristine Bi₂S₃ and C@Bi₂S₃ samples at 8 h; (e) charge-discharge curves of the C@Bi₂S₃ sample at 8 h at different current densities, and (f) EIS spectra of pristine Bi₂S₃ and C@Bi₂S₃ samples at 8 h.