Figure 8

(a) Nyquist plots of HPGC-750 symmetric supercapacitors in 6 M KOH and 1 M Na₂SO₄, (b) Nyquist plots of HPGC-750 symmetric supercapacitors in 1 M Et₄NBF₄/AN, and (c) Bode phase angle plots of HPGC-750 symmetric supercapacitors in different electrolytes.