fig12
![A review of the energy storage aspects of chemical elements for lithium-ion based batteries](https://image.oaes.cc/fca7603e-34c6-490b-93fd-d564f3994d92/4450.fig.12.jpg)
Figure 12. Electrochemical performance of coin cells with VONTs as cathode and Zn as anode in the range of 0.3-1.9 V vs. Zn/Zn+: (A) Ragone plot of different materials; (B) rate performance at current densities from 0.1 to 9.6 A g-1; (C) charge/discharge curves; (D) cycling performance at a current density of 2.4 A g-1. Reproduced with permission from Ref.[180] (Copyright 2019, Journal of Power Sources, Elsevier). VONTs: Vanadium oxide nanotubes.