The invention discloses a method for preparing a counter
electrode based on electrochemical synthesized
polyaniline on the surface of stainless steel. The method comprises the following steps: firstly, washing and chemically
polishing a stainless steel sheet to eliminate an
oxide layer on the surface; secondly, taking a washed stainless steel substrate as a
working electrode, and taking another stainless steel sheet with slightly
large size as the counter
electrode; thirdly, placing the
working electrode and the counter
electrode in
mixed solution, of
aniline and sulphuric acid, with a certain concentration; fourthly, performing
electrochemical polymerization with continuous stirring; and finally, rinsing sample sheets with dilute
sulfuric acid solution and
distilled water orderly after reaction, and
drying the sample sheets in vacuum to obtain a stainless steel base
polyaniline counter electrode. The stainless steel base
polyaniline counter electrode prepared by an
electrochemistry method has low cost and simple manufacturing process, and can obtain wide application prospect in the field of dye-sensitized solar cells.