Electrodeposition of nickel, cobalt, and iron on polypyrrole films

摘要: Abstract Ni, Co, and Fe, which are metals with relatively low redox potentials, have been electrodeposited on a polypyrrole surface. The conductivity of depends its oxidation state: the reduced state polymer film (at negative potentials) is poorly conducting, whereas partially oxidized shows high electronic positive potentials). potentials deposited located within potential range low-conductivity polypyrrole. metal layer under two-step potentiostatic conditions. First, oxidized. Next, reduction applied. At this potential, maintains for short time, allowing deposition to occur amount thickness polymeric concentration ions in solution. Nickel cobalt form dendritic structures, iron more uniform.