SYNTHESIS OF Ag2O/CNTs NANOCOMPOSITE TO BE USED AS A CATHODE MATERIAL FOR ZINC - SILVER BATTERIES

Nguyen Van Tu

Abstract


In this article, Ag2O/carbon nanotubes (CNTs) nanocomposite has been prepared by chemical reduction method and used as a cathode material for zinc-silver batteries. The transmission electron microscopy (TEM) tests reveal the CNTs and Ag2O nanotubes form an interpenetrating network structure. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis confirmed that the Ag2O shows Cubic (Pn-3) crystal structure and mixture element states in the nanocomposite. The charging/discharging property of the Ag2O/CNTs nanocomposite was studied by galvanostatic charge-discharge measurement as a cathode material. The results indicated that Ag2O/CNTs nanocomposite has high specific capacity and good cycling stability. For the current density of 0.53 mA/cm2 (2.5C), the initial specific capacity of the nanocomposite is 190 mAh/g and remains 172 mAh/g after 20 cycles.

 


Keywords


silver oxide, silver nanocomposite, zinc-silver battery, cathode material.

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DOI: https://doi.org/10.15625/2525-2518/56/2A/12643

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Published by Vietnam Academy of Science and Technology