Abstract:The effect adding of 0~6 mg/L bis-(sodium sulfopropyl)-disulfide (SPS) in the electrolyte containing collagen on the structure and performance of electrolytic copper foil was studied by using a self-made electrolytic copper foil experimental device for electrolyte circulation. As the concentration of SPS increases, the gloss of copper foil increases, and the roughness and tensile strength decrease. Scanning electron microscope (SEM), X-ray diffractometer (XRD) and electron backscatter diffraction (EBSD) were used to analyze the micro morphology and structure of electrolytic copper foil, it was found that SPS makes the surface of the copper foil change from roughness to leveling, and the preferred orientation of the crystal plane of the copper foil changes from (220) to (200).