Preparation of nanocomposite film of graphene oxide and Prussian blue via layer-by-layer assembly and investigation of capacitive properties

Abstract

A multilayer -up to eight- nanocomposite film of Graphene Oxide and Prussian Blue was prepared in a layer-by-layer assembly. The development of layers was monitored via UV-Vis spectrometry and the film's structure was studied with the Fourier-transform infrared spectroscopy and the morphology of the film was characterized by atomic force microscope.

The electrochemical performance and specific capacity of the film was studied in cyclic voltammetry, and Galvanic charging/discharge technics. The resistance of the electrode /electrolyte interface was studied by electrochemical impedance spectroscopy.

The electrochemical analysis confirmed that the multi-layer by layer film illustrated mixed behavior batteries and capacity called “CAPATTERY”. And much-improved specific capacitance of 254.4 F/g at 1A/g current density and superior stability of 98.1% of its initial value after 1000 cycles.