Effect of 5-sulfosalicylic acid and poly[2,5-bis(3-sulfonatopropoxy)-1,4-ethynylphenylene-alt-1,4-ethynylphenylene] on electrodeposition of polypyrrole-carbon nanotube films on stainless steel

►Adherent polypyrrole films were obtained on stainless steel by electropolymerization. ►Sulfosalicylic acid was used as anionic dopant for polypyrrole ►New conjugated polymer was used for dispersion and deposition of carbon nanotubes. ►Composite polypyrrole-carbon nanotube films were prepared. ►Composite films showed good capacitive behavior.