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. 2017 Feb 20;7:43104. doi: 10.1038/srep43104

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(a) Galvanostatic charge/discharge characteristics of the RGO and FG electrodes in 0.5 M H₂SO₄ at 2 A/g, (b) galvanostatic charge/discharge curves of FG electrodes at different current densities, (c) average specific capacitances of RGO and FG at various current densities, and (d) Ragone plot of FG electrodes at different current densities of 1, 2, 3, 4 and 5 A/g.