Fig. 9.

a Schematic showing the flexible quasi-solid-state Zn-MnO₂@PEDOT batteries. b HRTEM images of MnO₂@PEDOT sample [107]. c Schematic illustration of the structure of the solid-state ZIB and d the hammering test [108]. e Schematic illustration of the structure of the wire battery, inset showing the charging–discharging curves corresponding to the wire batteries bending at different angles [109]. f Galvanostatic discharge curves of Zn–MnO₂ batteries bending at different curvatures [110]. With permission from The Royal Society of Chemistry