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Spectroelectrochemistry by Confocal Raman Microspectrometry
- Source :
- Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 310:211-218
- Publication Year :
- 1998
- Publisher :
- Informa UK Limited, 1998.
-
Abstract
- Confocal Raman Microspectrometry is shown to be a powerful technique to study electrochemical devices under working conditions with a spatial resolution of about l μm3. This is first illustrated on a Li/P(EO)20, LiTFSI/Li symmetrical cell where salt concentration gradients in the polymer electrolyte are measured as a function of current density and time. These data give access to transport properties of the polymer electrolyte, namely transport numbers and diffusion coefficients. A second example is provided by electrostatic supercapacitors using activated carbon fabrics of high specific surface area and proton conducting liquid electrolytes. A mapping of a carbon fiber and of the surrounding electrolyte is recorded for ± IV polarizations. The relative intensity and the frequencies of the D and G Raman lines of carbon are found to be very sensitive to the carbon charge.
Details
- ISSN :
- 1058725X
- Volume :
- 310
- Database :
- OpenAIRE
- Journal :
- Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
- Accession number :
- edsair.doi...........f6d2a9fdfc0999528295c26c6cf7a501