Investigation of CuSO4.5H2O as a cathode electrode in sodium ion batteries

In large scale energy storage devices, sodium ion batteries due to desirable properties such as the abundance of sodium, low cost and safety over organic electrolytes are the suitable replacements for lithium ion batteries. We study the effect of copper sulfate on additional compounds for optimizing the battery in aqueous Environment [1]. Cobalt compound is sometimes a good choice for improving the properties of the positive electrode material. Cobalt raises the oxygen over potential increases the conductivity of the active material and reduces the electrode swelling during charge- discharge cycling [2,3]. In this work, we report a novel, high power SIB formed by coupling CuSO4.5H2O, CoSO4.7H2O Graphite as cathode with MnSO4.5H2O, NiSO4.6H2O and CoSO4.7H2O Graphite as anode. Electrochemical properties were studied with cyclic voltammetry and chronopotentiometry techniques. After applying 100 cycles to the manufactured battery by using the CV technique, the battery could be discharged with 1.45 V in 7090 seconds and high efficiency of about 70.9%. Also the capacity of this battery resulted 856.08 mAh/g.