Fabrication of Strontium Bismuth Oxides as Novel Battery-Type Electrode Materials for High-Performance Supercapacitors

Figure 5

(a) Charge-discharge curves of different SBO sample electrodes at current density of 1 A g⁻¹, (b) charge-discharge curves of SBO-1 : 3 electrodes at different current density, (c) cycling stability of SBO-1 : 3 electrodes at the current density of 1 A g⁻¹ (the inset is the first and last charge-discharge cycles), and (d) Nyquist diagrams of the SBO-1 : 3, SBO-1 : 2, and SBO-1 : 1 electrodes at frequencies ranging from 0.01 Hz to 100 kHz (the insets are the fitting circuit (below) and magnification of the high-frequency area (above)).

(a)

(b)

(c)

(d)