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(a) cyclic voltammogram (CV) curves of NiSe2-rGO-C composite nanofibers, (b) CV curves of bare NiSe2 nanofibers, (c) initial charge/discharge curves at a constant current density of 200 mA g−1, (d) cycling performances at a constant current density of 200 mA g−1, and (e) rate performances.
