Rechargeable sodium-ion battery based on a cathode of copper hexacyanoferrate
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Author
Rojas, Víctor
Cáceres, Gustavo
Henríquez, Rodrigo
Grez, Paula
Schrebler, Ricardo
Navarrete, Emilio
Herrera, Francisco
Caballero, Álvaro
Gómez-Cámer, J.L.
Aristizábal, Juliet
Muñoz, Eduardo
Publisher
Springer NatureDate
2023Subject
CathodeCopper(II)
Hexacyanoferrate(III)
Energy storage
Electrochemical insertion
Sodium-ion battery
Electrochemistry
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In this work, the performance of copper(II) hexacyanoferrate(III) (CuHCF) as a cathode material for sodium-ion batteries was studied. The compound was synthesized by a precipitation reaction in aqueous solution in a closed system. The morphology and structure show nanoparticles agglomerated with sizes ranging between 40 and 70 nm and a crystalline phase with a cubic structure, respectively. The material exhibited a stable performance with a working potential of around 3.4 V vs. Na+/Na. The gravimetric capacity obtained is close to 30 mAh g-1 for 100 cycles at a rate of C/20, which is around half of the capacity for CuHCF when it encounters water in its structure, e. g., zeolite-type (60 mAh g-1), which is less than the theoretical capacity for this material (85.1 mAh g-1). CuHCF could be a promising cathode material for sodium-ion batteries considering its electrochemical performance.