Three-electrode electrochemical measurement system for high-pressure hydrothermal systems and preparation method of three-electrode electrochemical measurement system

Abstract

The invention discloses a three-electrode electrochemical measurement system for high-pressure hydrothermal systems and a preparation method of the three-electrode electrochemical measurement system. An electrode base is fixed in a mounting hole of a high-temperature high-pressure cavity through a metal sealing ring, a sealing ring compression ring and a compression nut; three conical holes which are communicated with three through holes at the outer end are formed in the axial inner end of the electrode base; a circular truncated cone-shaped working electrode, a circular truncated cone-shaped auxiliary electrode and a circular truncated cone-shaped porous ceramic are respectively mounted in the three conical holes; the through hole which is communicated with the conical hole which is provided with the circular truncated cone-shaped porous ceramic is communicated with a reference electrode capillary tube; the other end of the reference electrode capillary tube is communicated with an electrode chamber which is formed by a reference electrode nut, a reference electrode shell, a reference electrode compression ring and a circular truncated cone-shaped reference electrode. According to the three-electrode electrochemical measurement system, the working electrode, the reference electrode and the auxiliary electrode are capable of bearing high temperature and pressure under high-pressure electrochemical condition through a formed conical self-tightening type sealing mechanism, and good sealing efficiency and insulating property are provided.

Description

technical field [0001] The invention relates to a three-electrode electrochemical measurement device which can be used for in-situ monitoring of electrochemical corrosion of materials in a high-pressure hydrothermal system and the interaction between a high-pressure hydrothermal system and electricity, and belongs to the technical field of electrochemical measurement. Background technique [0002] In recent years, with the increase of thermal power plants and nuclear power plants, the development of technologies such as supercritical oxidation, high temperature and high pressure synthesis, high temperature and high pressure electrolysis, and the research needs of deep sea hydrothermal systems, more and more high pressure hydrothermal systems have appeared in From people's perspective, it can be said that the high-pressure hydrothermal system is related to various fields such as energy, environment, and resources. And with the development of science and technology, the temper...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a wide temperature and pressure range (room temperature -700°C, normal pressure -100 MPa), which can be used for in-situ monitoring of electrochemical corrosion of materials in high-pressure hydrothermal systems and high-pressure water A device that interacts with the thermal system and electricity to solve the problems of poor stability and reliability in use of the existing technology, as well as the difficulty in meeting the existing needs of the working temperature and pressure

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