Construction of an electrochemical stable conductive network to improve the pseudocapacitance of polyaniline

An electrochemical stable conductive network is built to improve the pseudocapacitance of polyaniline . As a proof-of-concept demonstration, p olyaniline/ITO composite is synthesized by in-situ oxidation polymerization of aniline in the dispersed system of ITO nanoparticles . The electrical conductivity of the optimal polyaniline/ ITO composite is 14.42 S cm −1 , while that of contrast polyaniline is 1.88 S cm −1 . P olyaniline/ ITO coated on the oxidized carbon cloth (polyaniline/ITO@oxidized carbon cloth) displays a specific capacitance of 1505.7 mF cm −2 at a current density of 0.5 mA cm −2 , and the capacitance retention reaches 75% with a growth of the current density from 0.5 to 5 mA cm −2 , while those of polyaniline@oxidized carbon cloth are 847.9 mF cm −2 and 68.3% . It is noteworthy that the capacitance retention of polyaniline/ITO@oxidized carbon cloth symmetrical capacitor is high up to 90.1% after 2000 cycles at a current density of 1 mA cm −2 . Moreover, a high energy density of 31.18 μWh cm −2 is also attained at a power density of 0.35 mW cm −2 .