Infrared Photothermal Deflection Spectroscopy: A New Probe for the Investigation of Electrochemical Interfaces
| Autor: | Frank R. McLarnon, Zhongyi Deng, James D. Rudnicki, Jonathan D. Spear, Elton J. Cairns |
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| Rok vydání: | 1996 |
| Předmět: |
Absorption spectroscopy
Renewable Energy Sustainability and the Environment Infrared Chemistry Analytical chemistry Infrared spectroscopy Electrolyte Condensed Matter Physics Laser Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Electrochemical cell law Electrode Materials Chemistry Electrochemistry Spectroscopy |
| Zdroj: | Journal of The Electrochemical Society. 143:1514-1521 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.1836672 |
| Popis: | An infrared photothermal deflection spectroscopy system has been developed using infrared tunable diode lasers in the wavelength region from 8 to 16 {micro}m. This system allows the collection of in situ optical absorption spectra of species at electrode/electrolyte interfaces in an electrochemical cell. The infrared spectra of LiOH and Li{sub 2}CO{sub 3} formed on the surface of a lithium foil were recorded. The infrared photothermal deflection spectroscopy technique has been used to monitor the lithium electrode surface in an operating cell, Li/P(EO){sub 8}-LiN(CF{sub 3}SO{sub 2}){sub 2}/Ni. The in situ spectra (in the 800--1,000 cm{sup {minus}1} region) show that the film formation at Li/polymer electrolyte interfaces is dominated by LiOH, although there also appears to be organic species in the surface film. |
| Databáze: | OpenAIRE |
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