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Layer By Layer Assembly with Sol-Gel Materials and Its Electrochemical Application


Layer by layer assembly, a coating method that uses two opposite charged solutions, has led to functional coating field due to its advantages [1]. Charged polyelectrolytes are widely used as glue in layer by layer assembly, because they provide opposite charge between the solutions, thus avoiding an agglomerate form of coating. However, only a few instance of layer by layer assembly without polyelectrolyte are studied. In this study, layer by layer assembly using the sol-gel oxides instead of polyelectrolyte are studied. SnO₂ (Tin dioxide) and ZrO₂ (Zirconium dioxide) are prepared using the sol-gel method, and six different layer by layer including SnO₂ (Tin dioxide)/X (X= Graphene Oxide (GO), Boron Nitride (BN), Iron Oxide (Fe₂O₃), CuO (Copper Oxide)) and ZrO₂ (Zirconium dioxide)/ Y (Y= Graphene Oxide (GO), Boron Nitride (BN)) are assembled. These multilayers are characterized by Scanning Electron Microscopy(SEM). Cyclic Voltammetry (CV) test is used to evaluate the multilayers for supercapacitor applications

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