Porous Activated Carbons Derived from Pleurotus eryngii for Supercapacitor Applications

Figure 4

(a) XPS spectra of APEs activated at different temperatures. High-resolution C 1s spectra of APE activated at 600°C (b), 700°C (c), and 800°C (d).

(a)

(b)

(c)

(d)