Tailoring the electrochemical performance of <scp>PEDOT</scp> : <scp>PSS</scp> via incorporation of spray dryer processed graphene oxide
Manoj Karakoti, Gaurav Tatrari, Sandeep Pandey, Pawan Singh Dhapola, Ritu Jangra, Suman Mahendia, Mayank Pathak, Sunil Dhali, Pramod K. Singh, Nanda Gopal Sahoo
Abstract
This work reports a comparative study of electrolytic behavior of PEDOT:PSS-SPGO nanocomposite-based supercapacitor devices in aqueous and polymer gel electrolytes. Initially, more purified and finely dispersed graphene oxide (SPGO) was synthesized by using a spray dryer process. Furthermore, PEDOT:PSS was mixed in a certain optimum concentration with SPGO and a PEDOT:PSS-SPGO nanocomposite was prepared. The utility of PEDOT:PSS-SPGO nanocomposite was investigated by fabricating its supercapacitor devices. Here, the incorporation of SPGO enhanced the electrochemical performance of the PEDOT:PSS by developing the PEDOT:PSS-SPGO nanocomposite. The prepared nanocomposite-based device exhibited the highest Csp of 134.66 and 155 F g−1 in polyvinyl alcohol-phosphoric acid (PVA-H3PO4))polymer gel and aqueous 1 M H3PO4 electrolytes, respectively, at 5 mV s−1 which were higher than that of pure PEDOT:PSS and SPGO. In addition, this nanocomposite showed a good energy density and high-power density of 10.79 W h kg−1 and 1529.29 W kg−1, respectively, in aqueous electrolyte.