This spectro-electrochemical cell is designed for simultaneous optical and electrochemical measurements in energy materials and analytical electrode research. Fabricated using a full quartz melting method with a polytetrafluoroethylene cover, it ensures chemical inertness and optical transparency suitable for in situ spectroscopic studies. The integrated three-electrode configuration includes a platinum mesh working electrode, a platinum wire counter electrode, and a silver-silver chloride reference electrode, enabling accurate potential control and current collection. Two gap options—8×6.5×1 mm and 8×6.5×0.5 mm—accommodate different sample thicknesses or electrolyte layer requirements, making the cell adaptable for investigating electrode-electrolyte interfaces, charge transfer processes, or catalytic reactions under applied voltage. Typical applications include spectroelectrochemistry, battery material characterization, and electrochemical sensor development.