Konjac Sponge Derived Carbon Flakes with Optimized Pore Structure for High-Performance Supercapacitor

Figure 5

Electrochemical performance of KAC-700, 800, and 900 in 1 M H₂SO₄ aqueous solution. (a) CV curves at the scan rate of 5 mV/s, (b) GCD curves at 0.5 A/g, (c) specific capacitances under different current densities calculated from GCD data, and (d) Nyquist plots of the achieved samples, the inset images show enlarged impedance at the high frequency and the equivalent circuit.

(a)

(b)

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