Abstract
The impedance response of electrochemically roughened Pt electrodes with roughness factors ranging from approximately 1.5 to 800 has been determined under experimental conditions involving a penetration depth of the ac signal exceeding the pore depth. Comparative data were obtained for smooth polycrystalline, preferred-oriented, and platinized Pt electrodes in the same solution. The roughness of the interface was modeled as asymmetric truncated conical pores on the electrode, i.e. a limiting approach to the brush-like structure derived from scanning tunneling microscopy imaging for this type of electrode. The impedance data were approximated with a finite transmission line equivalent circuit for a cylindrical pore. The time dependent change in the impedance response correlates with the kinetics of roughness decay resulting from independent measurements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
