Preparation and Properties of Poly-2,5-dihydroxyaniline/activated Carbon composite Electrode
Poly-2, 5-dimethoxyaniline (PDMA) coating was successfully prepared by electrochemical method on the surface of active carbon (AC) electrodes in oxalic acid aqueous solution.The resulted coating was hydrolyzed to produce poly-2,5-dihydroxyaniline (PDHA) to enhance the capacitance of the composite electrode.Scanning electron microscope (SEM), cyclic voltammetry (CV), galvanostatic charge/discharge test, and electrochemical impedance spectroscopy (EIS) were used to investigate the properties of these electrodes.A comparative analysis on the electrochemical properties of bare-carbon electrode was also conducted under similar conditions.The specific capacitance of the PDHA/AC composite electrode was 947.04 F·g1 between 0.0 and 1.0 V at a current density of 3.0 mA·cm-2 in 0.5 M H2SO4 electrolyte.The capacitance retention of composite electrode was about 89.2% during 700 charge-discharge cycles.
PDHA Electrochemical Specific Capacitance Cyclic Voltammetry
Miao Sun Wei Wang Benlin He Mingliang Sun Fan Sun Wei Liu Honglun Ge Qinjie Zhang
Ocean University of China,Institute of Material Science and Engineering,Songling Road 238,Shandong Province,Qingdao 266100,China
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
528-533
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）