Superior charge discharge ability of reduced graphene oxide/Li-ion embedded polymer composite films
Electroactive polymeric composites are recent generation material for energy application in lithium batteries, solar cells and supercapacitors. In present study, reduced graphene oxide is prepared from graphite powder using liquid exfoliation. The synthesized reduced graphene oxide is embedded with polystyrene sulfonic acid/lithium phosphate polymer electrolyte to obtain polymer composite films. The dielectric studies of composite reveals huge change in relaxation time with addition of rGO in polymeric lithium ion composites. This attributes to decrease in ion-dipolar interaction strength and enhanced polymer segmental motion in presence of carbon. It also implies the activation of electrochemical properties of polystyrene sulfonic acid/lithium phosphate/reduced graphene oxide (PLrGO) composites which can be effectively utilize for charge storage applications. The PLrGO composite exhibits an improved electrochemical performance with different scan rate on potential window ranged between ? 0.5 and 1.2V. The specific capacitance value of ~ 17F/g with high rate chargedischarge capability over 8000 cycles was observed. Higher electrochemical stability and steady charge/discharge behavior makes PLrGO composites a promising candidate for charge storage applications. 2018, Springer Science+Business Media, LLC, part of Springer Nature.
Pandey M.; Manoj B.; Joshi G.M.; Ghosh N.N.; Vendan A.S.
Journal of Materials Science: Materials in Electronics, Vol-30, No. 3, pp. 2136-2145.
Pandey M., Department of Physics, Christ University, Bengaluru, 560029, Karnataka, India; Manoj B., Department of Physics, Christ University, Bengaluru, 560029, Karnataka, India; Joshi G.M., Department of Engg. Physics and Engg. Materials, Institute of Chemical Technology (ICT) Mumbai off Campus Jalna-Marathwada Region, Aurangabad Road, Jalna, 431 203, Maharashtra, India; Ghosh N.N., Department of Chemistry, Birla Institute of Technology and Science, Pilani, K K Birla Goa Campus, Goa, 403726, India; Vendan A.S., Industrial Automation and Instrumentation Division, School of Electrical Engineering, VIT University, Vellore, 632014, India