Fig. 8: Full aqueous Ca-ion cell based on PT anode and KCoFe(CN)6 PBA cathode.

a Schematic illustration of the reaction mechanism of the PT//PBA full cell. b Comparison of the CV curves of PT anode and PBA cathode. c The CV curves for the full cell at scan rates of 10–100 mV s−1. d The rate capability at different specific currents. e the GCD curves at different specific currents. f Cycle performance at 30 A g−1. g Cycle performance comparison with literature. See Supplementary Table 2 for reported data in literature.