Abstract
Prussian blue analogues (PBAs) have been considered as promising cathode materials for zinc-ion batteries. However, severe capacity decay issues hamper their deployment. Herein, Mn-ion-substituted zinc hexacyanoferrate (MZHCF) cathode materials were coated with polypyrrole (PPy) by in situ polymerization. The prepared MZHCF@PPy composites have exhibited significant ionic absorption affinity and great structural stability. Benefiting from the PPy coating, the ZIBs based on MZHCF@PPy cathodes and a conductive poly(acrylamide) (PAAM) hydrogel electrode exhibit enhanced capacities, which reach a maximum value of 190.1 mAh g−1 at 0.5 A g−1, three times higher than that of the device based on MZHCF electrodes. The flexible ZIBs not only present outstanding cyclic performance but also retain stable energy storage capability under various deformations. The presented method is a promising technology for the practical application of rechargeable ZIBs with high safety and flexibility.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
