Figure 3. Hybrid electrode morphology and characteristics.

(A) Electrical impedance spectra of the PTMA gels swollen with different amounts of liquid electrolyte (1 M LiPF₆ in EC/DEC): 135 and 225 wt%. Inset: photographs of dry and electrolyte swelled PTMA pellets. (B) Morphology of the C-RPG electrode in the dry and electrolyte swollen state. In the gel form, C-RPG electrode adopts a seamless carbon – polymer gel configuration. Histograms of (C) liquids absorption of PTMA and (D) electrical conductivity of the EDLC vs. C-RPG electrodes in dry and electrolyte-swollen states.