Abstract:Fe-based potassium Prussian blue analogues (K-PBAs) are traditionally used as K-ion battery cathodes. Interestingly, K-PBAs are appealing cathodes for Na-ion batteries (NIBs), due to the increased cation intercalation voltage compared to Na-PBAs. In such a hybrid NIB cell, where Na+ is in the electrolyte and K+ is in the PBA cathode, cation intercalation and electrochemical performance of the cathode can be significantly affected by [Fe(CN)6]4- anion vacancy. This work studies the effect of [Fe(CN)6]4- anion v… Show more
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