The invention relates to a multifunctional electrolytic tank for a scanning electrochemical
microscope, which comprises an upper cover, a lower cover and a double-layer cylinder, wherein the upper cover and the lower cover are concave, the inner side of the upper cover and the inner side of the lower cover are respectively provided with an internal thread I, two ends of the double-layer cylinder are respectively provided with an external thread II, the external threads II are matched with the internal threads I, the double-layer cylinder is internally provided with
electrolyte solution. The upper cover, the lower cover and the double-layer cylinder are connected by the internal threads I and the external threads II; the upper cover is provided with a circular hole I, a circular hole II and a circular hole III; the circular hole I is internally provided with a
working electrode; the circular hole II is inserted with a glass bent tube I; the circular hole III is inserted with a glass bent tube II, the upper part of the side wall of the double-layer cylinder is provided with a water outlet, the bottom of the side wall of the double-layer cylinder is respectively provided with a water inlet, a
side branch tube I and a
side branch tube II; and the
side branch tube I and the side tube II are symmetrically arranged, and are respectively provided with a
reference electrode and a counter
electrode. The multifunctional electrolytic tank can complete the experiments of a three-
electrode system, a four-
electrode system and a complex electrode
system through different structures of the lower cover, has a simple structure, is convenient to disassemble, and improves the
research efficiency.