Low cost & quasi solid state Na2Mn0.5Ni0.5Fe(CN)6//NaxFe2O3 hybrid Na-ion batteries for solar energy storage

Lowering the band gap is achieved by inclusion of nickel in Na 2 MnFe(CN) 6 and sodium in Fe 2 O 3 , which improves the overall electrochemical performances of the respective positive and negative electrodes in an aqueous Na-ion battery.