TY - JOUR
KW - Electrolytes
KW - Lithium
KW - Electrochemical electrodes
KW - Photothermal spectroscopy
KW - Foils
KW - Infrared spectroscopy
KW - Interface phenomena
KW - Probes
AU - Zhongyi Deng
AU - Jonathan D Spear
AU - James D Rudnicki
AU - Frank R McLarnon
AU - Elton J Cairns
AB - <p>An infrared photothermal deflection spectroscopy system has been developed using infrared tunable diode lasers in the wavelength region from 8 to 16 μm. This system allows the collection of <em>in situ</em> optical absorption spectra of species at electrode/electrolyte interfaces in an electrochemical cell. The infrared spectra of LiOH and Li<sub>2</sub>CO<sub>3</sub> 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/<em>P</em>(<em>EO</em>)<sub>8</sub>LiN(<em>CF</em><sub>3</sub><em>SO</em><sub>2</sub>)<sub>2</sub>/Ni. The <em>in situ</em> spectra (in the 800-1000cm<sup>-1</sup> 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.</p>
BT - Journal of the Electrochemical Society
DA - 05/1996
DO - 10.1149/1.1836672
IS - 5
LA - eng
M1 - 5
N2 - <p>An infrared photothermal deflection spectroscopy system has been developed using infrared tunable diode lasers in the wavelength region from 8 to 16 μm. This system allows the collection of <em>in situ</em> optical absorption spectra of species at electrode/electrolyte interfaces in an electrochemical cell. The infrared spectra of LiOH and Li<sub>2</sub>CO<sub>3</sub> 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/<em>P</em>(<em>EO</em>)<sub>8</sub>LiN(<em>CF</em><sub>3</sub><em>SO</em><sub>2</sub>)<sub>2</sub>/Ni. The <em>in situ</em> spectra (in the 800-1000cm<sup>-1</sup> 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.</p>
PY - 1996
SP - 1514
EP - 1521
T2 - Journal of the Electrochemical Society
TI - Infrared photothermal deflection spectroscopy: A new probe for the investigation of electrochemical interfaces
VL - 143
ER -