Capacitive Properties of Polyaniline/Nickel Hydroxide Composites Prepared by Using 4-Amino Thiophenol as the Structure Directing Agent

• Published in: Applied Mechanics and Materials Vol. 490-491; no. Mechanical Design and Power Engineering; pp. 3 - 7
• Main Authors: Li, Chang Hong, Huo, Yu Qiu
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.01.2014
• Subjects: Capacitance; Capacitors; Current density; Density; Electrodes; Hydroxides; Nickel; Polyanilines; Nickle Hydroxide; Polyaniline; 4-amino Thiophenol; Capacitive Properties
• ISBN: 303835001X; 9783038350019
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.490-491.3

Polyaniline/Nickel hydroxide composites were successfully obtained on the Au substrate pretreated by 4-ATP. They were characterized by fourier transform infrared (FT-IR) spectroscopy and scan electron microscopy (SEM). The capacitance performance of PANI/Ni (OH)2 composites were studied by cyclic voltammetry and galvanostatic charge/discharge. The specific capacitance of Polyaniline/Nickel hydroxide composite is up to 310 F/g at the current density of 1 mA/cm2 in 1.0 mol/L Na2SO4 solution. Electrode mass increases from 0.14 mg to 0.21 mg, specific capacitance decreases 7.7%. A symmetric capacitor was assembled by using PANI/Ni (OH)2 as both of the positive and negative electrodes and 1 M Na2SO4 as the electrolyte. It displays a energy density of 6.0 Wh kg-1 at the power density of 3125 W kg-1, which is much higher than symmetric capacitor assembled by PANI-PANI (4.9 Wh kg-1) and Ni (OH)2-Ni (OH)2 (3.5 Wh kg-1).