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(a) Comparison of the galvanostatic charge/discharge curves between TQC (black, 2nd cycle) and OTQC (red, 2nd cycle) at 50 mAg–1. (b) Galvanostatic charge/discharge curves of OTQC at 50 mA g–1. (c) Cycling stability of OTQC (red) and TQC (black) at 50 mA g–1. (d, e) Rate performance of OTQC. (f) Cycling stability of OTQC at 1 A g–1.
