Effect of Current Density on Zinc Morphology Deposited on Copper Plate for Using as an Electrode
Keywords:
Zinc electrode, Zinc battery, Zinc morphologyAbstract
Electrodes were prepared by an electroplating of zinc onto a copper plate using zinc sulfate with the concentration of 1.0 M as an electrolyte. The electroplating of zinc was used in various current density in the range of 0.02 – 0.10 A/cm2 with the constant plating time of 1 hour. The morphology and structure of the prepared zinc electrodes were characterized using the scanning electron microscope (SEM) and x-ray diffractometer (XRD), respectively. It was found that the current density had effect to zinc morphology which deposited on copper plate. Furthermore, zinc electrode had tested the performance with MnO2 electrode which was prepared by thermal pressing forming method in which KOH and were used as the electrolytes of a battery cell. The result was shown that the Zn-MnO2 battery could be charged and discharged up to 100 cycles and could achieve the high capacity of 67 mAh. Moreover, zinc electrode which had an intensely arranged structure gave a long life cycle more than the zinc electrode which had a disordered structure.
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