fig4
![An overview of aqueous zinc-ion batteries based on conversion-type cathodes](https://image.oaes.cc/f86b8b04-5f0c-4a81-98e6-7f6e831f0579/4709.fig.4.jpg)
Figure 4. A: Schematic illustration of the structure of a Zn-I2 battery with an I2/ACF cathode. B: Configurations of I2, ZnI2 and Zn(I3)2 by DFT calculations and schematic illustration of the reaction in the I2/CC cathode. C: Schematic diagram of NPC fabrication. D: Schematic diagram of I2-Nb2CTX fabrication. E: Schematic diagram of PBAs/I2 fabrication and reaction. F: Schematic illustration of PANI-I2 fabrication. G: Schematic illustration of the structure of the Zn-I2 battery with double-layered cathodes. Figures reproduced with permission from Pan et al.[45], Li et al.[58], Yu et al.[50], Ma et al.[27], Li et al.[ 52], Zeng et al.[51] and Lin et al.[59]. NPC: Nitrogen-doped porous carbon ; DFT: density functional theory.