Effects of electrodeposition parameters on ZN-TIO2 coating for zinc-ion battery

Abstract

This research work has an aim to modify and develop to obtain environmentally friendly Zinc ion battery (ZIB) with low cost. Usually, the limit of Zn ion battery is occurred by dendrite growth during cycling of Zn anode leading to shorter service lifetime. Therefore, in this present work had an idea to modify electrodeposition process by adding TiO2 nano particles into coated Zn layers. This composite deposits were used as the anode materials of ZIBs. The only Zn and Zn/TiO2 composite coatings were deposited on the stainless-steel foil as modified anodes. The plating and stripping tests of symmetric cells reveal that the agglomeration of TiO2 with Zn coatings would reduce the overpotential curves between plating and stripping processes. The galvanostatic charge-discharge tests reveal that the modified Zn/TiO2//MnO2 batteries exhibit higher rate ability and longer service lifetime than those of Zn//MnO2 batteries. Furthermore, increasing both current density and concentration of TiO2 in the electrolyte during electroplating results in more proper morphology of composite deposit of zinc electrode, which provides higher performances and longer lifetime of battery.