Author(s)

Dipu Borah^1*, Diganta Kumar Bharali², Michael A. Morris¹

¹AMBER Centre and CRANN, Trinity College Dublin, Dublin 2, Ireland.
²Department of Chemistry, Biswanath College, Bishwanath Charali, Assam, India.

Activated carbons (ACs) were prepared from a lignocellulosic-based waste material by a chemical impregnation method using KOH, NaOH or CaCl₂ as the activating agent. These ACs were characterized by different techniques such as N₂ adsorption, FTIR, XRD and SEM. Electrostatic properties viz. pH and pH_pzc of AC suspensions in aqueous media were measured. The concentration of surface oxygenated functional groups of the ACs was estimated following the Boehm titration method. Cyclic voltammetry was conducted in H₂SO₄ after fabricating two-electrode capacitor cells of the ACs. The correlation of AC surface chemistry and morphology with electrochemical performance (capacitance) of powdered electrodes is analyzed and discussed.

Activated Carbon, Chemical Impregnation, Characterization, Capacitor

Borah, D. , Bharali, D. and Morris, M. (2017) Lignocellulosic-Based Activated Carbon Prepared by a Chemical Impregnation Method as Electrode Materials for Double Layer Capacitor. Advances in Chemical Engineering and Science, 7, 175-190. doi: 10.4236/aces.2017.72013.