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(a) CV curves of G5S electrode at a scan rate of 0.5 mV s−1 over a voltage range of 0.005 to 3.0 V (vs. Li/Li+). (b) The discharge-charge curves of G5S electrode at a current of 250 mA g−1. (c) Cycling performance of the G5S electrode tested at a current density of 250 mA g−1. (d) Cycling performance of the G5S electrode at various current densities.
