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In situ Chemical Deposition of Polyaniline on Activated Carbon for Electrochemical Capacitors
Author(s) -
Zhou ZhangHua,
Cai NaiCai,
Zeng Yan,
Zhou YunHong
Publication year - 2006
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200690008
Subject(s) - polyaniline , chemistry , cyclic voltammetry , electrochemistry , composite number , electrode , scanning electron microscope , activated carbon , aniline , capacitance , carbon fibers , chemical bath deposition , deposition (geology) , analytical chemistry (journal) , supercapacitor , chemical engineering , composite material , organic chemistry , materials science , polymerization , polymer , adsorption , paleontology , sediment , engineering , biology
Polyaniline (PA) film was chemically deposited onto the surface of activated carbon (AC) uniformly. Chemical deposition was carried out in 0.1 mol/L aniline plus 0.5 mol/L H 2 SO 4 solution adopting V 2 O 5 · n H 2 O coated on the surface of activated carbon as oxidant. The surface morphologies and structures of the composite materials were characterized by scanning electron microscopy and FT‐IR spectra. The electrochemical properties of the composite material electrodes were studied by cyclic voltammetry and constant current charge/discharge tests in 1 mol/L H 2 SO 4 solutions. The specific capacitance of composite materials was exhibited as high as 237.5 F/g at a current density of 1.0 A/g compared with a value of 120 F/g for pure carbon electrode. Good power characteristic and good stability of composite electrodes were also demonstrated.