In Situ Raman Spectroelectrochemical Cell (Gas Diffusion – Serpentine Gas Path Type), Model: EC-RM3S

Description

Product Overview

The EC-RM3S is an upgraded version of the EC-RM3 in situ Raman Spectroelectrochemical Cell. It retains the membrane-separated three-chamber configuration and direct Raman access of the EC-RM3, while incorporating a serpentine flow channel within the gas chamber. The extended gas flow path increases the contact time between the reactant gas and the catalyst layer, allowing the gas to participate more effectively in the electrochemical reaction.

Key Features

• Serpentine Gas Flow Channel: Extends the gas flow path across the working electrode for controlled reactant delivery.
• Extended Gas-Catalyst Contact: Increases gas residence time to enhance interaction between the reactant gas and catalyst layer.
• Enhanced Gas-Fed Interface Control: Supports more effective gas participation during operando Raman investigation of electrochemical interfaces.

Technical Specifications

Working electrode area	1 cm² (customizable)
WE-optical window distance	< 6 mm
Optical window diameter	Ø37 mm (effective diameter: Ø34 mm)
Chamber structure	Three-chamber gas-diffusion configuration with a serpentine flow channel
Working electrode	Sheet-type gas-diffusion electrode (e.g., Au, Pt; glassy carbon, ITO, and FTO).
Reference electrode	Ag/AgCl or Ag/Ag⁺ electrode
Counter electrode	Platinum wire electrode or graphite rod electrode
Cell body material	PEEK + Ti
Optical window material	Quartz
Cell body dimensions	L99 × W70 × H25 mm

Instrument Compatibility

• Raman System Compatibility: Compatible with commercial Raman microscope systems, including Renishaw (inVia Qontor), HORIBA (LabRAM HR Evolution, iHR550), and Ocean Optical Instruments (HRS-5A).
• Potentiostat Compatibility: Compatible with commercial three-electrode electrochemical workstations, including CH Instruments (CHI660E, CHI760E, CHI1140C), Bio- Logic (VMP3), and Corrtest Instruments (CS350M).

Published Application Example

In Situ SERS Monitoring of CO₂ Electroreduction: The cell used in this study, supplied by Beyond Battery® under product code EC-RM3S, a gas-fed flow-cell configuration, was used to investigate copper electrodes with different Cu(100)/(111) grain-boundary densities during CO₂ electroreduction in neutral electrolyte. Catalyst-coated gas-diffusion layers served as the working electrodes, with Ag/AgCl and platinum wire as the reference and counter electrodes. In situ SERS tracked Cu–OH and adsorbed *CO species, linking hydroxyl-rich grain boundaries to enhanced ethylene selectivity.

Reproduced from Hu, S. et al. ACS Nano 2026, 20, 13888–13896. CC BY 4.0.

Demonstrated EC-RM3S Capabilities:

• Operando SERS monitoring in a gas-fed flow-cell configuration.
• Compatibility with catalyst-coated gas-diffusion electrodes.
• Tracking of Cu–OH and adsorbed *CO surface species.

Product Identification Note: EC-RM3S is the Beyond Battery product code for the same cell reported in the cited publications. The original articles use a different product designation.