|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Electrochemical Characterization of Capacitive Properties of Silicon Carbide-mullite-carbon Composite Electrodes
||Fatai Olufemi Aramide, Patricia Abimbola Popoola
|On-Site Speaker (Planned)
||Fatai Olufemi Aramide
High temperature ionic conductivity of graphite based ceramic made it promising material for high temperature energy storage applications. Little efforts have been made to investigate its supercapacitive characteristics. Clay is a composite of several supercapasitive minerals like heamatite, alumina, silica which have many useful properties, including high specific surface area and excellent adsorptive capacity. Nevertheless, little attention has been paid in exploring its energy storage potentials. This work investigates the capacitive properties of carbon-mullite-SiC electrode produced via powder metallurgy method. Powder graphite was mixed using turbula mixer with varying kaolin and SiC compositions. The blended powders compacted into briquettes and fired between 1200oC and 1500oC. Samples were allowed to soak at the temperatures for varied time. Samples were characterized using SEM/EDS and X-ray diffractometry. Electrochemical characteristics of the composites in sulphuric acid environment were performed by cyclic voltammetry, potentiodynamic polarization, chrono-amperometry, and Electrochemical Impedance Spectroscopy in a three-electrode system.