Biochar-Polymer Composite Based Electrochemical Double-Layer Capacitors

We will present our investigations on the charge storage capacity of biochar-polymer PVDF-HFP (Vinylidene Fluoride- Co-Hexafluoropropylene) composite-based electrode materials for electrochemical double-layer capacitors (EDLCs). Electrochemical double-layer capacitors EDLC devices with electrode materials having different composition ratios of Biochar to polymer were measured. Our investigations indicate the possibility of obtaining specific capacitance values of ~ 65F/g measured at 0.1 mv/s of scan rate. We will discuss how the variation of the compositional ratio (biochar to polymer) affects the EDLC properties in general considering the results obtained from various electrochemical measurements such as cyclic voltammetry (CV), Galvan static Charge-Discharge (GCD), and Electrochemical Impedance Spectroscopy (EIS).