In Situ Infrared Spectroelectrochemical Cell (Transmission), Model: EC-IR4

Description

Product Overview

The EC-IR4 is a thin-layer transmission FTIR spectroelectrochemical cell for monitoring electrochemically generated species, reaction intermediates and redox-state changes under potential control. Its platinum mesh working electrode provides an infrared transmission path through the active region, while the CaF window and three-electrode configuration support in situ measurements. Gas inlet and outlet ports enable purging and controlled-atmosphere operation.

Key Features

• Thin-Layer Transmission FTIR Geometry: The CaF optical window and controlled electrolyte layer provide a direct transmission path for potential-dependent FTIR measurements.
• Potential-Controlled Three-Electrode Measurements: Independent electrode connections support in situ spectroelectrochemical measurements under controlled potential.
• Controlled-Atmosphere Operation: Integrated gas inlet and outlet ports enable gas purging and atmosphere control during measurements.

Technical Specifications

Measurement mode	Transmission FTIR
Electrode system	Three-electrode
Solution-layer thickness	0.5 mm
Working electrode	Platinum mesh electrode
Counter electrode	Platinum wire electrode
Reference electrode	Platinum electrode
Optical window material	CaF₂ (sold separately)
Cell body material	PEEK
Optical window size	34 × 36 mm
Clear aperture	Ø10 mm
Gas connections	Inlet and outlet ports

Instrument Compatibility

• FTIR Spectrometer Compatibility: Compatible with commercial FTIR spectrometers supporting transmission measurements. Sample-compartment and optical alignment requirements should be confirmed before use.
• Potentiostat Compatibility: Compatible with commercial potentiostats supporting three-electrode measurements. Connection requirements should be confirmed before use.

Related Published Application

Transmission-Mode IR Spectroelectrochemistry of Electrocatalytic Intermediates: Kiefer et al. used a transmission-mode OTTLE cell equipped with Pt minigrid working and auxiliary electrodes, an Ag-wire pseudoreference electrode, a 200 μm polyethylene spacer and 2 mm CaF₂ windows to investigate Re(bpy)(CO)₃Cl. Potential-dependent FTIR spectra tracked the starting complex, singly reduced species and Re–Re dimer, while 2D-IR cross-peaks at 1948 and 1986 cm⁻¹ confirmed dimer formation in acetonitrile.

Source: Kiefer, L. M. et al. J. Phys. Chem. Lett. 2021, 12, 3712–3717.

Capabilities Relevant to the EC-IR4

• Enables thin-layer transmission FTIR measurements under electrochemical control.
• Tracks the potential-dependent formation and consumption of solution-phase intermediates.
• Supports controlled-atmosphere studies of molecular electrocatalysts and degradation pathways.

Note: The referenced study used a transmission-mode OTTLE cell with a configuration comparable to the EC-IR4 and is included solely as a related application example.