Rice husk char (RHC), a carbon-based material, was obtained by thermal decomposition of rice (RH) biological waste. Physicochemical properties RHC were determined using XRD, FTIR, FESEM, TGA, N2 adsorption-desorption studies and contact angle measurement. A lab-scale supercapacitor (SC) fabricated as-prepared its supercapacitive behaviour investigated techniques like CV, GCD EIS studies. Eac...