Fig. 3: Electrochemical performance of the BBQPH and BBQPD cathodes.

a Contrastive CV curves of the BBQPH and BBQPD cathodes at 0.5 mV s–1. b Galvanostatic discharge/charge curves of the BBQPH and BBQPD electrodes at 0.2 A g–1. c Bar graph of the discharge plateau versus the energy density. d Rate performances and e cycling stability of BBQPH and BBQPD. f Comparison of the capacities and energy densities between the BBQPH electrode and recently reported organic cathodes. g Cycling performances of BBQPH electrodes at different test temperatures. h Cycling performance of pouch-type Zn//BBQPH batteries at 0.1 A g–1.