Nano-thin polypyrrole (PPy) layers were coated on chemically modified ordered mesoporous carbon (m-CMK-3) by an in situ chemical polymerization Structural and morphological characterizations of m-CMK-3/PPy composites were carried out using field emission scanning electron microscopy Pseudo-capacitive behavior of the deposited PPy layers on m-CMK-3 was investigated by cyclic voltammetry galvanostatic charge-discharge and electrochemical impedance spectroscopy As results of this study the thin layer of PPy in the composite electrode was effective to obtain fully reversible and very fast Faradaic reaction A maximum discharge capacity of 427 F g(-1) or 487 F g(-1) after correcting for weight percent of PPy phase at the current density of 5 mA cm(-2) could be achieved in a half-cell setup configuration for the m-CMK-3/PPy composites electrode suggesting its potential application in electrode material for electrochemical capacitors (C) 2010 Elsevier Ltd All rights reserved