A Novel Open-Framework Cu-Ge-Based Chalcogenide Anode Material for Sodium-Ion Battery

Figure 3

(a) The initial three curves of the CGSe at a scanning rate of 0.2 mV s⁻¹. (b) The charge/discharge curves and (c) cycling performance of the CGSe at a current density of 100 mA g⁻¹. (d) Cycling performance of the CGSe at a current density of 200 mA g⁻¹. (e) The rate capability of CGSe under varying current densities (from 50 to 1000 mA g⁻¹), respectively.

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