Effect of CO-Solvent Mediated Metal Ion Linker on Morphology and Electrochemical Performance of GO/PANI Hybrid

Abstract

In this study, the morphology of the GO/PANI composites will be investigated as electrode materials for storage devices like batteries and supercapacitor by preparing the nanocomposites via wet chemical facile synthesis with an appropriate selection of co-solvents and a variety of metal ion cross linkers. The structural and morphological characterizations including Xray-diffraction (XRD), Raman spectroscopy and Scanning electron microscopy (SEM) will be performed to gain an insight into structural and morphological properties of the nanostructures. Whereas the cyclic voltameter was performed to study the charge storage and capacitance mechanisms in the structures. In this project the GO/PANI composites were synthesized via facile wet chemical method by varying three different metal ion linkers ZnCl2, NaCl2 and LiI2. The effect of metal ion linker onto the structural properties of the synthesized composites were studied using XRD and Raman spectroscopy technique. The XRD results confirmed the synthesis of GO and PANI composite. The broad peaks of (113) and (002) plane of PANI and GO shows the amorphous behavior of the synthesized composite. The crystallite size and interplanar spacing of the composites were estimated using Scherrer formula and Bragg’s equations. The estimated crystallite size for (113) and (002) plane of PANI and GO are 2.50nm, 5.60nm, 6.00nm and 2.00nm, 2.23nm, 2.50nm respectively. The estimated interplanar spacing for (113) and (002) plane of PANI and GO are 0.49nm, 0.43nm, 0.44nm and 0.39nm, 0.38nm, 0.37nm respectively. The Raman spectroscopy shows the characteristic vibrational modes of GO and PANI in pure and composite samples