In-situ Raman Spectroelectrochemical Cell Model: EC-RM3SP

EC-RM3SP In-Situ Raman Spectroelectrochemical Cell A short-path, large-window Raman cell for interface-resolved operando analysis of gas-diffusion electrodes under industrially relevant conditions. Product Overview The EC-RM3SP is optimized for high-sensitivity operando Raman analysis of gas-diffusion electrodes under gas-fed conditions. Its high-transmittance sapphire window is positioned less than 3 mm from the working electrode, providing a short optical path for interface-resolved Raman acquisition. The three-chamber architecture and serpentine gas flow field support controlled reactant delivery and compartment separation, making the cell suitable for advanced gas-diffusion electrocatalysis and industrially relevant CO₂ electrolysis studies. Key Features • Short-Path Raman Access A WE-optical window distance of less than 3 mm minimizes electrolyte-induced signal attenuation for sensitive interface-resolved measurements • Broad Raman System Compatibility Compatible with commercial Raman microscope systems, enabling convenient integration into operando spectroelectrochemical measurements • Controlled Gas-Diffusion Interface Serpentine gas flow enhances delivery across the 1 cm² GDE, while close reference-electrode placement minimizes uncompensated resistance Technical Specifications Working electrode area 1 cm² (customizable) WE-optical window distance < 3 mm Optical window diameter Ø38 mm (effective diameter Ø22 mm) Chamber structure Three-chamber 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 or graphite rod electrode Cell body material PEEK Optical window material Sapphire Cell body dimensions L89 × W70 × H20 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 Donghua Testing Technology (DH7001A), CH Instruments (CHI1140C), Corrtest Instruments (CS2350), and DHElecchem systems Published Application Example Operando Raman Tracking of Cu-Site Reconstruction during CO₂ Methanation The cell used in this study, supplied by Beyond Battery under product code EC-RM3SP, enabled potential-dependent operando Raman monitoring of ZrO₂-supported Cu single-atom catalysts during CO₂ electroreduction, revealing the reconstruction of CuN₄ sites into a CuN₁O₂ coordination environment and tracking key surface species, including *COOH, *HCO₃⁻, and CO₃²⁻. The reconstructed CuN₁O₂ catalyst achieved CH₄ Faradaic efficiencies of 87.06 ± 3.22% at −500 mA cm⁻² and 80.21 ± 1.01% at −1000 mA cm⁻², demonstrating improved activity and stability over the original CuN₄ structure. Demonstrated EC-RM3SP Capabilities Operando Raman monitoring at gas-diffusion electrodes Tracking of electrochemically induced catalyst reconstruction Potential-dependent detection of CO₂RR surface intermediates Application Studies Additional application studies are underway.