I successfully synthesis polyaniline by potentiostatic (chronoamperometry, at 0.8 V for time 600 sec.) method, Indium tin oxide coated glass electrode as working electrode (1 cm), platinum as counter electrode and Ag/AgCl as reference electrode. But with Stainless steel 304 (available in market) as working electrode, it show overload ( I>Imax) and reaction stop within 2 second. What is problem with stainless steel 304 as working electrode for potentiostatic deposition of polyaniline. Please open discussion. Thanks.
In case of ITO coated glass electrode one surface i.e., ITO coated is conducting and other is insulating in case of stainless steel electrode both surfaces are conducting.
Dear Sachin,
I am working on the 301 SS, especially in this type you can see in clear the critical and passive regions that causes stop of the polyaniline deposition on it . I advise use the 314L in your work.
Regards,
You may need to prepare surface of stainless prior to use by a fine abrasive in one direction.
Dear Sachin,
I agree. It seems you need to find conditions (including electrochemical characterization, acid nature, reagents concentrations, which finally effect the steel surface condition) for electrochemical deposition of PANI on the SS steel. Probably, the seminal DeBerry paper will be useful for you also. http://jes.ecsdl.org/content/132/5/1022.short
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