Electrochemical Performance Study of FeHCF/Zn Batteries
Aqueous rechargeable zinc ion batteries have attracted much attention due to their low cost and safety,however,the cathode materials of aqueous zinc ion batteries are highly susceptible to degradation,limiting the stable energy output of the batteries.In aqueous zinc ion batteries,cathode materials,especially Prussian blue compounds(FeHCF),are very competitive candidates for cathode materials due to their three-dimensional open structure,high operating voltage,and simple synthesis method.In this work,the Prussian blue analogue FeHCF was prepared by the precipitation method,tested for its physicochemical properties,assembled a button full cell,and electrochemical tests were performed,and the results showed that the aqueous electrolyte could thus provide a specific capacity of 80 mAh/g at 1C and showed good cycling stability(90％capacity retention after 50 cycles at 1C),and that such a Prussian blue-based aqueous zinc-ion batteries have a low cost,high energy density,and long cycle life is promising for small and medium scale energy storage applications.
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