Facile Synthesis of Nanostructured Bimetallic Mixed Oxides and their Electrochemical Characterization as Energy Storages Devices

Abstract

Global warming is the major issue of our modern world. Thus, scientists and researchers are in search of more efficient and more environmental friendly energy materials. With the increasing development in the field of nanoscience and nanotechnology the modern world has transformed the old energy devices into more efficient and more sustainable energy devices. Therefore, there is a lot of need to find out more high performance energy storage devices. In this regard supercapacitor has a lot of potential to overcome the modern world Challenges. In this research work supercapacitor electrodes are prepared with improved energy density and power density. The material used in this research work for supercapacitor is Fe2(MoO4)3 which is a bimetallic mixed oxide. Sample is prepared by a facile hydrothermal method. The structural properties of the prepared sample are analyzed by the X-ray diffraction XRD. The XRD of the prepared sample shows the monoclinic crystal structure with average crystallite size of 68nm. To study the bonding between the atoms FTIR analysis is done. The results of FTIR shows the strong bonding between Fe and MoO4 ions. For electrochemical measurements 3 electrode system is used and two characterizations are done. CV of the prepared sample is done in two electrolytes to find out the best results. The CV curve shows the clear redox reactions occurring. As the scan rate is increased the current increases which confirms the fast electron transfer of electrons in the sample. GCD measurements shows that the sample has fast charging and discharging rate with excellent cyclability. The energy density and power density of the prepared sample was calculated to be 99.91 Wh/Kg and 5533.78 W/Kg respectively.