publication . Article . 2007

Polypyrrole electrodeposited on copper from an aqueous phosphate solution: Corrosion protection properties

Open Access
  • Published: 01 Jan 2007 Journal: Corrosion Science, volume 49, pages 1,765-1,776 (issn: 0010-938X, Copyright policy)
  • Publisher: Elsevier BV
  • Country: Ireland
Abstract Highly adherent and homogenous polypyrrole films were electrodeposited at copper from a dihydrogen phosphate solution. The polypyrrole films were electrosynthesized in the overoxidized state by cycling the copper electrode from –0.4 to 1.8 V (SCE) in a pyrrole-containing phosphate solution. The growth of the polypyrrole films was facilitated by the initial oxidation of the copper electrode in the phosphate solution to generate a mixed copper–phosphate, copper oxide or hydroxide layer. This layer was sufficiently protective to inhibit further dissolution of the copper electrode and sufficiently conductive to enable the electropolymerization of pyrrole at...
free text keywords: General Materials Science, General Chemistry, General Chemical Engineering
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