Broadband Sum Frequency Generation Studies of Surface Intermediates Involved in Fuel Cell Electrocatalysis - Fuel Cell Catalysis: A Surface Science Approach - page 370

Figure 12.1 Schematic of the spectroelectrochemistry apparatus at the University of Illinois.
The thin-layer spectroelectrochemical cell (TLE cell) has a 25 mm thick spacer between the elec-
trode and window to control the electrolyte layer thickness and allow for reproducible refilling of
the gap. The broadband infrared (BBIR) and narrowband visible (NBVIS) pulses used for
BB-SFG spectroscopy are generated by a femtosecond laser (see Fig. 12.3). Voltammetric
and spectrometric data are acquired simultaneously.
Figure 12.2 The electrochemical cell has a 25 mm Teflon spacer sandwiched between the
electrode and a window (CaF 2 or MgF 2 ) to provide an electrolyte layer of known and controlled
thickness. Working, reference, and auxiliary electrodes are indicated. Construction materials are
glass and Teflon.