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

Figure 2

The scanning electron microscopy (SEM) of the three samples prepared using different molar ratios (a) and (b) is SBO-1 : 3 in different magnifications, (c) SBO-1 : 2, and (d) SBO-1 : 1. The insert is the energy-dispersive X-ray spectrometry (EDS) image.

(a)

(b)

(c)

(d)