VIRTUAL IMPEDANCE SPECTROSCOPY FOR ELECTROLYTICAL CELLS
Abstract
Impedance spectroscopy play an important role in fundamental and applied electrochemistry and materials science. In a number of respects it is the method of choice for characterizing the electrical behavior of systems in which the overall system behavior is determined by a number of strongly coupled processes, each proceeding at a different frequency. The paper presents a virtual instrument and the associated hardware that allows to perform the impedance spectroscopy on an electrolytical cell. It is aimed for studying phenomena (charge transfer, difusion or electrode polarisation) that occur while growing nanowires in polycarbonate templates. The hardware consists of a NI PCI6111 data acquisition board and external analog front end (programmable current to voltage converter and programmable mixed AC – DC voltage generator). The software is developed in Labview and allows to perform the impedance spectroscopy and to save the data on a file. With a different software, the system can be used also for electrochemical deposition or for etching of the polymer membranes with ion tracks. Detailed schematic description is presented, together with experimental results.
Event details
- Event
- Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
- Technical Committee
- TC4
- Place
- Florence, ITALY
- Time
- 22 September 2008 - 24 September 2008
- Website
- http://www.imeko2008.org/