Water Plasma Functionalized CNTs/MnO₂ Composites for Supercapacitors

Figure 2

SEM images of wpCNTs/MnO₂ before electrochemical cycling (a), wpCNTs/MnO₂ after electrochemical cycling (0-1 V) (b), and wpCNTs/MnO₂ after electrochemical cycling (0.1–0.8 V) (c). Inset graphs show top view of the CNTs mat.

(a)

(b)

(c)