Fig. 8 | Scientific Reports

Fig. 8

From: Nonporous TiO2@C microsphere with a highly integrated structure for high volumetric lithium storage and enhance initial coulombic efficiency

Fig. 8

(a) CV curves of the TiO2@C electrode at a scan rate of 0.1 mV s− 1. (b) Discharge/charge curves of the TiO2@C electrode at 0.2 A/g, (c) The initial coulombic efficiency comparison between the TiO2@C in this paper and other TiO2-based electrode (the current densities of the first cycle test for Ref. 18, 22, 25, 37, 38 and 39 are 0.1 A/g, 0.2 A/g, 0.2 A/g, 3 C, 0.25 C and 0.2 C, 1 C = 170 mA/g) (d) Cycling performance of TiO2@C and TiO2 electrodes at 0.2 A/g, (e) rate performance of TiO2@C and TiO2 electrodes at different current densities, (f) comparison of rate performance of TiO2@C in this paper with recently reported works on TiO2-based electrode for LIBs, (g) the long-term cycling performance of the TiO2@C electrode increased to a current density of 5 A/g after 10 cycles at a current density of 0.1 A/g.

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