Figure 9
From: A sustainable bio-based char as emerging electrode material for energy storage applications

Variation of capacitance (C) with potential (E). The figure presents the variation of determined capacitance with voltage for the spherical graphite (blue line) and HySB (red line) samples. Each capacitance point is determined at a fixed potential value which varies from 0 to 1 V in steps of 50 mV.