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Electrochemical performance of the Sb-ND@C electrode. (a) CV curves at a scan rate of 0.1 mV s−1 for the first 5 cycles; (b) Galvanostatic discharge–charge profiles for selected cycles at the current rate of 100 mA g−1; (c) Rate performance at various current density from 0.05 to 5 A g−1 and (d) Cycle performance at 500 mA g−1.
